{"title":"Zone Control Dampers","description":"\u003cp\u003eMotorized inline dampers for hot air supply duct zone control on forced-air heating systems. Factory-machined 10% heat bypass blade maintains minimum airflow through closed zones, preventing static pressure spikes and high-limit trips on single-speed furnaces. 24 Vac and 120 Vac options. Sizes 2\"–14\". Not for fresh air or ventilation applications.\u003c\/p\u003e","products":[{"product_id":"hac-inline-motorized-air-damper-24vac","title":"HAC Universal Inline Air Control Damper — CSA Certified, 24 Vac, 2\"–9\", Spring Return","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hac-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hac-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hac-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hac-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hac-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hac-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hac-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hac-desc__warning { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hac-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n\n  .hac-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hac-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hac-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hac-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n\n  .hac-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hac-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hac-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\u003c\/style\u003e\n\u003cdiv class=\"hac-desc\"\u003e\n\u003cp class=\"hac-desc__intro\"\u003eThe most specified motorized inline damper in the Hoyme lineup. CSA-certified, 24 Vac, spring return, sizes 2\"–9\". Handles fresh air intake, make-up air, HRV\/ERV duct control, zone control, and ventilation code compliance installs across Canada and the US.\u003c\/p\u003e\n\u003cdiv class=\"hac-desc__bullets\"\u003e\n\u003cdiv class=\"hac-desc__bullet\"\u003e\n\u003cspan class=\"hac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac-desc__bullet-text\"\u003e\u003cstrong\u003eStall-protected motor\u003c\/strong\u003e — holds against ice and elevated static pressure without tripping or leaving the blade in an unknown position\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__bullet\"\u003e\n\u003cspan class=\"hac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified — complete assembly\u003c\/strong\u003e — the damper body, drive, and control hardware together, not just the actuator\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__bullet\"\u003e\n\u003cspan class=\"hac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003c!-- CORRECTION: Original said \"cannot be changed after installation.\" The Change PO\/PC instruction\n           document shows field conversion is possible via spring plate reversal, but it requires full\n           drive disassembly. Language updated to reflect the actual situation accurately. --\u003e \u003cspan class=\"hac-desc__bullet-text\"\u003e\u003cstrong\u003ePO or PC action\u003c\/strong\u003e — confirm before ordering; changing the action after installation requires full drive disassembly and is not practical once the unit is in a duct run\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__bullet\"\u003e\n\u003cspan class=\"hac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac-desc__bullet-text\"\u003e\u003cstrong\u003eEnd switch\u003c\/strong\u003e — confirms blade position; required for ADP relay adaptor interlock sequences\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__bullet\"\u003e\n\u003cspan class=\"hac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac-desc__bullet-text\"\u003e\u003cstrong\u003eRelay\u003c\/strong\u003e — switched output when damper opens; use to trigger furnace fan or secondary device (not available on 2\" and 3\")\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__bullet\"\u003e\n\u003cspan class=\"hac-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hac-desc__bullet-text\"\u003e\u003cstrong\u003eReplacement parts stocked\u003c\/strong\u003e — motor kits, microswitch kits, spring return kits at your wholesaler; a motor failure does not mean a full damper replacement\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CORRECTION: Original said \"factory-set and cannot be changed after installation.\"\n       Updated to accurately reflect that field conversion exists but is impractical in a\n       duct run — consistent with the Change PO\/PC instruction document in the Technical Library. --\u003e\n\u003cdiv class=\"hac-desc__warning\"\u003e\n\u003cstrong\u003eConfirm PO vs. PC before ordering.\u003c\/strong\u003e The action is set at the factory. A field conversion procedure exists — it requires removing the motor, reversing the spring plate, and remounting the drive — but this is not practical once the unit is installed in a duct run. The only reliable correction after installation is replacement. PO is correct for the vast majority of fresh air intake and make-up air applications — the duct seals when the system is off. PC is used only when fail-open on power loss is required by the system design.\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__specs\"\u003e\n\u003cdiv class=\"hac-desc__spec\"\u003e\n\u003cdiv class=\"hac-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec-value\"\u003e2\"–9\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec\"\u003e\n\u003cdiv class=\"hac-desc__spec-label\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec-value\"\u003e24 Vac\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec\"\u003e\n\u003cdiv class=\"hac-desc__spec-label\"\u003eAction\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec\"\u003e\n\u003cdiv class=\"hac-desc__spec-label\"\u003eCertification\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec-value\"\u003eCSA — complete assembly\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec\"\u003e\n\u003cdiv class=\"hac-desc__spec-label\"\u003eDrive\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec-value\"\u003ePatented Hoyme spring motor\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec\"\u003e\n\u003cdiv class=\"hac-desc__spec-label\"\u003eRelay available\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__spec-value\"\u003e4\"–9\" only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CORRECTION: Original cited ADP-0241-S5A. This model appears in the SharePoint source\n       document but is NOT listed in the 2026 price list — the closest listed model is\n       ADP-0241-05A. Until the correct model number is confirmed with the factory, the\n       specific model reference has been removed and replaced with a reference to the ADP\n       series listing, which covers all current models. Do not reinstate a specific model\n       number here until this is resolved. --\u003e\n\u003cdiv class=\"hac-desc__note\"\u003e\n\u003cstrong\u003eNeed an ADP relay adaptor?\u003c\/strong\u003e For ventilation code compliance — fresh air damper interlocked with furnace fan — the ADP relay adaptor sequences the HAC open first, proves position via end switch, then energizes the fan. Order the SPO or SPC variant when using an ADP adaptor. See the \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP series\u003c\/a\u003e for the correct model for your application.\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__warranty\"\u003e\n\u003csvg width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"flex-shrink: 0;\"\u003e\n      \u003cpath d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\" stroke=\"#C8102E\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\n      \u003cpath d=\"M9 12l2 2 4-4\" stroke=\"#C8102E\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hac-desc__warranty-text\"\u003e2-year electrical · 10-year mechanical warranty\u003c\/div\u003e\n\u003cdiv class=\"hac-desc__warranty-sub\"\u003eMade in Canada · 40+ years field-proven in Canadian climates\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"2\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079378468907,"sku":"HAC-0210-OPO","price":196.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079378501675,"sku":"HAC-0210-SPO","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079378599979,"sku":"HAC-0210-OPC","price":196.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079378632747,"sku":"HAC-0210-SPC","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079378731051,"sku":"HAC-0310-OPO","price":196.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Open (PO) 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Switch","offer_id":43079380271147,"sku":"HAC-0811-SPC","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43079380303915,"sku":"HAC-0910-OPO","price":204.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43079380336683,"sku":"HAC-0910-SPO","price":230.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43079380369451,"sku":"HAC-0911-OPO","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Realy + End Switch","offer_id":43079380402219,"sku":"HAC-0911-SPO","price":278.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43079380434987,"sku":"HAC-0910-OPC","price":204.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43079380467755,"sku":"HAC-0910-SPC","price":230.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43079380500523,"sku":"HAC-0911-OPC","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Realy + End Switch","offer_id":43079380533291,"sku":"HAC-0911-SPC","price":278.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_90.png?v=1775771249"},{"product_id":"hac-h-heat-bypass-inline-damper-24vac","title":"HAC-H Heat Inline Damper — CSA Certified, 24 Vac, 2\"–9\", 10% Heat Bypass","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hach-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hach-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hach-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hach-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hach-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hach-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hach-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hach-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hach-desc__critical { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hach-desc__critical strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hach-desc__warning { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hach-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hach-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hach-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n\n  .hach-desc__compare { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 20px; }\n  .hach-desc__compare-card { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 12px 14px; }\n  .hach-desc__compare-card--red { border-top: 3px solid #C8102E; }\n  .hach-desc__compare-card--navy { border-top: 3px solid #001F3F; }\n  .hach-desc__compare-title { font-family: 'Montserrat', sans-serif; font-size: 12px; font-weight: 700; color: #001F3F; margin-bottom: 8px; }\n  .hach-desc__compare-item { display: flex; align-items: flex-start; gap: 7px; margin-bottom: 5px; }\n  .hach-desc__compare-item:last-child { margin-bottom: 0; }\n  .hach-desc__compare-dot--red { color: #C8102E; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .hach-desc__compare-dot--navy { color: #001F3F; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .hach-desc__compare-text { font-size: 12.5px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.45; }\n\n  .hach-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hach-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hach-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hach-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .hach-desc__spec--red { background: #fff3f4; border-color: #C8102E; }\n  .hach-desc__spec--red .hach-desc__spec-label { color: #C8102E; }\n  .hach-desc__spec--red .hach-desc__spec-value { color: #C8102E; }\n  .hach-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .hach-desc__spec--highlight .hach-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hach-desc__spec--highlight .hach-desc__spec-value { color: #FFFFFF; }\n\n  .hach-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hach-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hach-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\n  @media (max-width: 480px) {\n    .hach-desc__compare { grid-template-columns: 1fr; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"hach-desc\"\u003e\n\u003cp class=\"hach-desc__intro\"\u003eCSA-certified motorized inline zone damper for hot air supply duct control where full shutoff causes heat buildup, high-limit trips, or thermal stress. A 10% bypass is machined directly into the blade at the factory — permanent, consistent, always present. Same patented Hoyme 24 Vac spring return drive as the standard HAC. Sizes 2\"–9\".\u003c\/p\u003e\n\u003c!-- APPLICATION WARNING — unchanged, confirmed accurate against source --\u003e\n\u003cdiv class=\"hach-desc__critical\"\u003e\n\u003cstrong\u003eNot for fresh air, make-up air, or ventilation applications.\u003c\/strong\u003e The 10% bypass is permanent and cannot be disabled. On a fresh air or outdoor air duct, outdoor air infiltrates the building continuously through the bypass whenever the damper is commanded closed — every hour, every day, every season. If a HAC-H has been installed on a fresh air application in error, it must be replaced with a standard HAC.\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__bullets\"\u003e\n\u003cdiv class=\"hach-desc__bullet\"\u003e\n\u003cspan class=\"hach-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hach-desc__bullet-text\"\u003e\u003cstrong\u003e10% bypass machined into the blade at the factory\u003c\/strong\u003e — not a field modification, not an adjustable insert, not removable; consistent on every unit\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__bullet\"\u003e\n\u003cspan class=\"hach-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hach-desc__bullet-text\"\u003e\u003cstrong\u003ePrevents high-limit trips on single-speed furnaces\u003c\/strong\u003e — maintains minimum airflow through closed zones, relieving static pressure and keeping heat exchanger airflow above the trip threshold\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__bullet\"\u003e\n\u003cspan class=\"hach-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hach-desc__bullet-text\"\u003e\u003cstrong\u003eSame patented Hoyme spring motor drive\u003c\/strong\u003e — stall-protected, holds against elevated duct static pressure on pressurized zone systems without tripping\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__bullet\"\u003e\n\u003cspan class=\"hach-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hach-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified — complete assembly\u003c\/strong\u003e — covers Canadian and US installations\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__bullet\"\u003e\n\u003cspan class=\"hach-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hach-desc__bullet-text\"\u003e\u003cstrong\u003ePO or PC action, end switch and relay available\u003c\/strong\u003e — all factory-installed; relay not available on 2\" and 3\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__bullet\"\u003e\n\u003cspan class=\"hach-desc__bullet-check\"\u003e✓\u003c\/span\u003e \u003cspan class=\"hach-desc__bullet-text\"\u003e\u003cstrong\u003eReplacement parts stocked\u003c\/strong\u003e — motor kits, microswitch kits, spring return kits at your wholesaler; drive services in place\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CORRECTION 1: PO\/PC confirmation warning was absent from the original description.\n       The source document states: \"PO and PC are not interchangeable. Action cannot be\n       changed after installation. Confirm action before placing the order.\" All other HAC\n       family descriptions carry this warning. Added here with the session-consistent\n       softened language (field conversion requires drive disassembly, not practical in\n       a duct run). --\u003e\n\u003cdiv class=\"hach-desc__warning\"\u003e\n\u003cstrong\u003eConfirm PO vs. PC before ordering.\u003c\/strong\u003e The action is set at the factory. A field conversion procedure exists — it requires removing the motor, reversing the spring plate, and remounting the drive — but this is not practical once the unit is installed in a duct run. For most hot air zone control applications PO is correct — the zone opens when called and spring-closes when the call ends. PC is used only when the zone must fail open on power loss; confirm with the system designer before specifying PC on a zone damper.\u003c\/div\u003e\n\u003c!-- CORRECTION 2: Variable speed furnace row moved out of \"Use standard HAC when...\"\n       and into its own neutral row in the HAC-H column.\n       Original placed it only under standard HAC, implying the HAC-H is never correct\n       for variable speed. Source says: \"Variable speed furnace: HAC or HAC-H — Variable\n       speed modulates down — bypass may still be preferred; confirm with system designer.\"\n       Both products are valid; the correct choice depends on the system designer. --\u003e\n\u003cdiv class=\"hach-desc__compare\"\u003e\n\u003cdiv class=\"hach-desc__compare-card hach-desc__compare-card--red\"\u003e\n\u003cdiv class=\"hach-desc__compare-title\"\u003eUse HAC-H when…\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eHot air supply duct zone control — single-speed furnace\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eClosing supply zones causes high-limit trips or heat buildup\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eMinimum airflow through all zones required regardless of call status\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eVariable speed furnace — bypass may still be preferred; confirm with system designer\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003e120 Vac site — see HAC-12H\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-card hach-desc__compare-card--navy\"\u003e\n\u003cdiv class=\"hach-desc__compare-title\"\u003eUse standard HAC when…\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eFresh air intake, make-up air, or ventilation — full shutoff required\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eReturn air zone control — bypass not required on return side\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__compare-item\"\u003e\n\u003cspan class=\"hach-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hach-desc__compare-text\"\u003eHRV \/ ERV duct control — bypass allows reverse infiltration\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__specs\"\u003e\n\u003cdiv class=\"hach-desc__spec hach-desc__spec--highlight\"\u003e\n\u003cdiv class=\"hach-desc__spec-label\"\u003eBypass\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec-value\"\u003e10% — factory machined, permanent\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec\"\u003e\n\u003cdiv class=\"hach-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec-value\"\u003e2\"–9\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec\"\u003e\n\u003cdiv class=\"hach-desc__spec-label\"\u003eVoltage\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec-value\"\u003e24 Vac\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec\"\u003e\n\u003cdiv class=\"hach-desc__spec-label\"\u003eAction\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec\"\u003e\n\u003cdiv class=\"hach-desc__spec-label\"\u003eCertification\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec-value\"\u003eCSA — complete assembly\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec hach-desc__spec--red\"\u003e\n\u003cdiv class=\"hach-desc__spec-label\"\u003eNot Suitable For\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__spec-value\"\u003eFresh air, make-up air, ventilation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__note\"\u003e\n\u003cstrong\u003e120 Vac site?\u003c\/strong\u003e The HAC-12H combines the 120 Vac built-in transformer with the same 10% bypass blade. Use HAC-12H when only 120 Vac is available at the damper location and hot air zone control with bypass is required.\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__warranty\"\u003e\n\u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"hach-desc__warranty-text\"\u003e2-year electrical · 10-year mechanical warranty\u003c\/div\u003e\n\u003cdiv class=\"hach-desc__warranty-sub\"\u003eMade in Canada · CSA certified for Canadian and US installations\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"2\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081011888171,"sku":"HAC-0210-OPO-H","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081011920939,"sku":"HAC-0210-SPO-H","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012019243,"sku":"HAC-0210-OPC-H","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"2\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081012052011,"sku":"HAC-0210-SPC-H","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012150315,"sku":"HAC-0310-OPO-H","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081012183083,"sku":"HAC-0310-SPO-H","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012281387,"sku":"HAC-0310-OPC-H","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"3\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081012314155,"sku":"HAC-0310-SPC-H","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012412459,"sku":"HAC-0410-OPO-H","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081012445227,"sku":"HAC-0410-SPO-H","price":249.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43081012477995,"sku":"HAC-0411-OPO-H","price":272.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43081012510763,"sku":"HAC-0411-SPO-H","price":300.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012543531,"sku":"HAC-0410-OPC-H","price":222.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081012576299,"sku":"HAC-0410-SPC-H","price":249.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43081012609067,"sku":"HAC-0411-OPC-H","price":272.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43081012641835,"sku":"HAC-0411-SPC-H","price":300.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012674603,"sku":"HAC-0510-OPO-H","price":223.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081012707371,"sku":"HAC-0510-SPO-H","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43081012740139,"sku":"HAC-0511-OPO-H","price":273.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43081012772907,"sku":"HAC-0511-SPO-H","price":301.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012805675,"sku":"HAC-0510-OPC-H","price":223.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081012838443,"sku":"HAC-0510-SPC-H","price":251.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43081012871211,"sku":"HAC-0511-OPC-H","price":273.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43081012903979,"sku":"HAC-0511-SPC-H","price":301.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081012936747,"sku":"HAC-0610-OPO-H","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081012969515,"sku":"HAC-0610-SPO-H","price":253.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43081013002283,"sku":"HAC-0611-OPO-H","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43081013035051,"sku":"HAC-0611-SPO-H","price":304.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013067819,"sku":"HAC-0610-OPC-H","price":228.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081013100587,"sku":"HAC-0610-SPC-H","price":253.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43081013133355,"sku":"HAC-0611-OPC-H","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43081013166123,"sku":"HAC-0611-SPC-H","price":304.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013198891,"sku":"HAC-0710-OPO-H","price":229.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081013231659,"sku":"HAC-0710-SPO-H","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43081013264427,"sku":"HAC-0711-OPO-H","price":277.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43081013297195,"sku":"HAC-0711-SPO-H","price":305.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013329963,"sku":"HAC-0710-OPC-H","price":229.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081013362731,"sku":"HAC-0710-SPC-H","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43081013395499,"sku":"HAC-0711-OPC-H","price":277.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43081013428267,"sku":"HAC-0711-SPC-H","price":305.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013461035,"sku":"HAC-0810-OPO-H","price":231.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081013493803,"sku":"HAC-0810-SPO-H","price":259.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43081013526571,"sku":"HAC-0811-OPO-H","price":279.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43081013559339,"sku":"HAC-0811-SPO-H","price":306.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013592107,"sku":"HAC-0810-OPC-H","price":231.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081013624875,"sku":"HAC-0810-SPC-H","price":259.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43081013657643,"sku":"HAC-0811-OPC-H","price":279.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43081013690411,"sku":"HAC-0811-SPC-H","price":306.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013723179,"sku":"HAC-0910-OPO-H","price":233.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43081013755947,"sku":"HAC-0910-SPO-H","price":262.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43081013788715,"sku":"HAC-0911-OPO-H","price":283.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43081013821483,"sku":"HAC-0911-SPO-H","price":309.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43081013854251,"sku":"HAC-0910-OPC-H","price":233.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43081013887019,"sku":"HAC-0910-SPC-H","price":262.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43081013919787,"sku":"HAC-0911-OPC-H","price":283.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43081013952555,"sku":"HAC-0911-SPC-H","price":309.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_89.png?v=1775771114"},{"product_id":"hac-12h-heat-bypass-damper-120vac","title":"HAC-12H Heat Inline Damper — 120 Vac, Built-In Transformer, 10% Heat Bypass, 4\"–9\"","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hac12h-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hac12h-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hac12h-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hac12h-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hac12h-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hac12h-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hac12h-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac12h-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hac12h-desc__dual-warning { background: #fff3f4; 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}\n  .hac12h-desc__table td:first-child { font-size: 12.5px; }\n  .hac12h-desc__table td:last-child { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; font-size: 12.5px; white-space: nowrap; }\n  .hac12h-desc__table tr.hac12h-desc__table-highlight td { background: #F3F6F8; }\n  .hac12h-desc__table tr.hac12h-desc__table-highlight td:last-child { color: #001F3F; }\n  .hac12h-desc__table-footer { font-size: 12px; color: #718096; font-family: 'Open Sans', sans-serif; margin-top: 6px; margin-bottom: 20px; font-style: italic; }\n\n  .hac12h-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hac12h-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hac12h-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hac12h-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .hac12h-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .hac12h-desc__spec--highlight .hac12h-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hac12h-desc__spec--highlight .hac12h-desc__spec-value { color: #FFFFFF; }\n  .hac12h-desc__spec--red { background: #fff3f4; border-color: #C8102E; }\n  .hac12h-desc__spec--red .hac12h-desc__spec-label { color: #C8102E; }\n  .hac12h-desc__spec--red .hac12h-desc__spec-value { color: #C8102E; }\n  .hac12h-desc__spec--amber { background: #fffbeb; border-color: #d97706; }\n  .hac12h-desc__spec--amber .hac12h-desc__spec-label { color: #92400e; }\n  .hac12h-desc__spec--amber .hac12h-desc__spec-value { color: #92400e; }\n\n  .hac12h-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hac12h-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hac12h-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"hac12h-desc\"\u003e\n\n  \u003cp class=\"hac12h-desc__intro\"\u003eThe HAC-12H combines two features in one unit: the 120 Vac built-in transformer of the HAC-12 and the 10% heat bypass blade of the HAC-H. For one specific situation — hot air supply duct zone control on a 120 Vac site. Both conditions must be present to justify this product. If only one applies, one of the single-feature variants is the correct order. CSA certified. Sizes 4\"–9\".\u003c\/p\u003e\n\n  \u003c!-- Dual warning — confirmed accurate against source --\u003e\n  \u003cdiv class=\"hac12h-desc__dual-warning\"\u003e\n    \u003cdiv class=\"hac12h-desc__dual-warning-item\"\u003e\n      \u003cspan class=\"hac12h-desc__dual-warning-icon\"\u003e!\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eDo not supply 24 Vac to a HAC-12H.\u003c\/strong\u003e The built-in transformer requires 120 Vac input. Supplying 24 Vac will result in product damage and will not operate the damper.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12h-desc__dual-warning-item\"\u003e\n      \u003cspan class=\"hac12h-desc__dual-warning-icon\"\u003e!\u003c\/span\u003e\n      \u003cspan\u003e\u003cstrong\u003eDo not install on fresh air intake, make-up air, or ventilation applications.\u003c\/strong\u003e The 10% bypass is permanent and cannot be disabled — outdoor air infiltrates continuously through the bypass whenever the damper is commanded closed.\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- CORRECTION 1: PO\/PC confirmation warning was absent.\n       Source document states: \"Action: PO or PC — specify at order; cannot be changed\n       after installation.\" Same omission corrected on HAC-H and HAC-12. Added with\n       session-consistent softened language. --\u003e\n  \u003cdiv class=\"hac12h-desc__warning\"\u003e\n    \u003cstrong\u003eConfirm PO vs. PC before ordering.\u003c\/strong\u003e The action is set at the factory. A field conversion procedure exists — it requires removing the motor, reversing the spring plate, and remounting the drive — but this is not practical once the unit is installed in a duct run. For most hot air zone control applications PO is correct. PC is used only when the zone must fail open on power loss; confirm with the system designer.\u003c\/div\u003e\n\n  \u003cdiv class=\"hac12h-desc__bullets\"\u003e\n\n    \u003cdiv class=\"hac12h-desc__bullet\"\u003e\n      \u003cspan class=\"hac12h-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12h-desc__bullet-text\"\u003e\u003cstrong\u003eBuilt-in 120 Vac to 24 Vac transformer\u003c\/strong\u003e — one switched 120 Vac circuit to the damper; no separate transformer, no low-voltage wiring run required\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac12h-desc__bullet\"\u003e\n      \u003cspan class=\"hac12h-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12h-desc__bullet-text\"\u003e\u003cstrong\u003e10% bypass machined into the blade at the factory\u003c\/strong\u003e — permanent, not field-adjustable; maintains minimum flow through closed zones, prevents high-limit trips on single-speed furnaces\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac12h-desc__bullet\"\u003e\n      \u003cspan class=\"hac12h-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12h-desc__bullet-text\"\u003e\u003cstrong\u003eSame spring return operation as the standard HAC\u003c\/strong\u003e — Hansen motor with 24 Vac spring return internally; same PO\/PC fail-safe behavior\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac12h-desc__bullet\"\u003e\n      \u003cspan class=\"hac12h-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12h-desc__bullet-text\"\u003e\u003cstrong\u003ePO or PC action, end switch available\u003c\/strong\u003e — all factory-installed; relay not available on any 120 Vac motor code variant\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac12h-desc__bullet\"\u003e\n      \u003cspan class=\"hac12h-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac12h-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified\u003c\/strong\u003e — complete assembly, Canadian and US installations\u003c\/span\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- CORRECTION 2: Multi-condition note added below the decision table.\n       Source states: \"If more than one condition applies — for example, 120 Vac site,\n       hot air duct zone control, AND cold climate location — contact Hoyme for guidance\n       on the appropriate specification.\" This scenario has no product in the standard\n       lineup. A contractor reading only the table would find no matching row and draw\n       a false conclusion. The note directs them to the factory, as the source requires. --\u003e\n  \u003cdiv class=\"hac12h-desc__table-wrap\"\u003e\n    \u003ctable class=\"hac12h-desc__table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eJob Condition\u003c\/th\u003e\n          \u003cth\u003eRight Product\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr class=\"hac12h-desc__table-highlight\"\u003e\n          \u003ctd\u003e120 Vac supply + hot air duct zone control (bypass needed)\u003c\/td\u003e\n          \u003ctd\u003eHAC-12H — this product\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e120 Vac supply + fresh air intake or make-up air (full shutoff needed)\u003c\/td\u003e\n          \u003ctd\u003eHAC-12\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e120 Vac supply + cold climate damper location (insulation needed, no bypass)\u003c\/td\u003e\n          \u003ctd\u003eHAC-12L\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e24 Vac supply + hot air duct zone control (bypass needed)\u003c\/td\u003e\n          \u003ctd\u003eHAC-H\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e24 Vac supply + fresh air intake or make-up air\u003c\/td\u003e\n          \u003ctd\u003eHAC (standard)\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp class=\"hac12h-desc__table-footer\"\u003eIf more than one condition applies — for example, 120 Vac site, hot air duct zone control, AND cold climate location — no standard variant covers all conditions. Contact Hoyme Manufacturing for guidance before ordering.\u003c\/p\u003e\n\n  \u003cdiv class=\"hac12h-desc__specs\"\u003e\n    \u003cdiv class=\"hac12h-desc__spec hac12h-desc__spec--highlight\"\u003e\n      \u003cdiv class=\"hac12h-desc__spec-label\"\u003eSupply Voltage\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__spec-value\"\u003e120 Vac — built-in transformer\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12h-desc__spec hac12h-desc__spec--highlight\"\u003e\n      \u003cdiv class=\"hac12h-desc__spec-label\"\u003eBypass\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__spec-value\"\u003e10% — factory machined, permanent\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12h-desc__spec\"\u003e\n      \u003cdiv class=\"hac12h-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__spec-value\"\u003e4\"–9\"\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12h-desc__spec\"\u003e\n      \u003cdiv class=\"hac12h-desc__spec-label\"\u003eAction\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12h-desc__spec hac12h-desc__spec--red\"\u003e\n      \u003cdiv class=\"hac12h-desc__spec-label\"\u003eNot Suitable For\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__spec-value\"\u003eFresh air, make-up air, ventilation\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac12h-desc__spec hac12h-desc__spec--amber\"\u003e\n      \u003cdiv class=\"hac12h-desc__spec-label\"\u003eRelay\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__spec-value\"\u003eNot available — use HAC-H (24 Vac)\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hac12h-desc__note\"\u003e\n    \u003cstrong\u003eNeed relay output or ADP furnace fan sequencing?\u003c\/strong\u003e The 120 Vac motor code does not include relay capability. For zone control applications requiring a relay output or furnace fan interlock, use the \u003ca href=\"\/products\/hac-h-heat-bypass-inline-damper-24vac\"\u003eHAC-H (24 Vac)\u003c\/a\u003e with the relay option and ADP relay adaptor. For 120 Vac sites requiring relay output, discuss the control circuit approach with your wholesaler.\u003c\/div\u003e\n\n  \u003cdiv class=\"hac12h-desc__warranty\"\u003e\n    \u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n    \u003cdiv\u003e\n      \u003cdiv class=\"hac12h-desc__warranty-text\"\u003e2-year electrical  ·  10-year mechanical warranty\u003c\/div\u003e\n      \u003cdiv class=\"hac12h-desc__warranty-sub\"\u003eCSA certified  ·  Made in Canada\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"4\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083295260715,"sku":"HAC-0412-OPO-H","price":274.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Open (PO) \/ End Switch","offer_id":43083295293483,"sku":"HAC-0412-SPO-H","price":300.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083295326251,"sku":"HAC-0412-OPC-H","price":274.0,"currency_code":"CAD","in_stock":true},{"title":"4\" \/ Power Close (PC) \/ End Switch","offer_id":43083295359019,"sku":"HAC-0412-SPC-H","price":300.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083295391787,"sku":"HAC-0512-OPO-H","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Open (PO) \/ End Switch","offer_id":43083295424555,"sku":"HAC-0512-SPO-H","price":301.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083295457323,"sku":"HAC-0512-OPC-H","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"5\" \/ Power Close (PC) \/ End Switch","offer_id":43083295490091,"sku":"HAC-0512-SPC-H","price":301.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083295522859,"sku":"HAC-0612-OPO-H","price":278.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ End Switch","offer_id":43083295555627,"sku":"HAC-0612-SPO-H","price":304.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083295588395,"sku":"HAC-0612-OPC-H","price":278.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ End Switch","offer_id":43083295621163,"sku":"HAC-0612-SPC-H","price":304.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083295653931,"sku":"HAC-0712-OPO-H","price":279.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Open (PO) \/ End Switch","offer_id":43083295686699,"sku":"HAC-0712-SPO-H","price":305.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083295719467,"sku":"HAC-0712-OPC-H","price":279.0,"currency_code":"CAD","in_stock":true},{"title":"7\" \/ Power Close (PC) \/ End Switch","offer_id":43083295752235,"sku":"HAC-0712-SPC-H","price":305.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083295785003,"sku":"HAC-0812-OPO-H","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ End Switch","offer_id":43083295817771,"sku":"HAC-0812-SPO-H","price":309.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083295850539,"sku":"HAC-0812-OPC-H","price":282.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ End Switch","offer_id":43083295883307,"sku":"HAC-0812-SPC-H","price":309.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Standard (No End Switch)","offer_id":43083295916075,"sku":"HAC-0912-OPO-H","price":286.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ End Switch","offer_id":43083295948843,"sku":"HAC-0912-SPO-H","price":314.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Standard (No End Switch)","offer_id":43083295981611,"sku":"HAC-0912-OPC-H","price":286.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ End Switch","offer_id":43083296014379,"sku":"HAC-0912-SPC-H","price":314.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_85.png?v=1775770127"},{"product_id":"hac50-51-inline-damper-quarter-turn-24vac","title":"HAC-50 \/ HAC-51 Inline Air Control Damper — CSA Certified, 24 Vac, 6\"–14\", Quarter-Turn ¼\" Drive","description":"\u003cp\u003e\u003cem\u003eProduct image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .hac50-desc * { box-sizing: border-box; margin: 0; padding: 0; }\n  .hac50-desc { font-family: 'Open Sans', sans-serif; color: #001F3F; line-height: 1.6; font-size: 15px; }\n\n  .hac50-desc__intro { font-size: 15px; line-height: 1.75; color: #374151; margin-bottom: 20px; }\n\n  .hac50-desc__bullets { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }\n  .hac50-desc__bullet { display: flex; align-items: flex-start; gap: 10px; }\n  .hac50-desc__bullet-check { color: #C8102E; font-weight: 700; font-size: 14px; flex-shrink: 0; line-height: 1.6; }\n  .hac50-desc__bullet-text { font-size: 14px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac50-desc__bullet-text strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #001F3F; }\n\n  .hac50-desc__warning { background: #fff3f4; border-left: 4px solid #C8102E; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac50-desc__warning strong { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n\n  .hac50-desc__note { background: #F3F6F8; border-left: 4px solid #001F3F; border-radius: 0 4px 4px 0; padding: 12px 16px; margin-bottom: 20px; font-size: 13.5px; color: #001F3F; font-family: 'Open Sans', sans-serif; line-height: 1.6; }\n  .hac50-desc__note strong { font-family: 'Montserrat', sans-serif; font-weight: 700; }\n  .hac50-desc__note a { color: #C8102E; text-decoration: none; font-weight: 600; }\n\n  .hac50-desc__compare { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 20px; }\n  .hac50-desc__compare-card { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 14px 16px; }\n  .hac50-desc__compare-card--red { border-top: 3px solid #C8102E; }\n  .hac50-desc__compare-card--navy { border-top: 3px solid #001F3F; }\n  .hac50-desc__compare-title { font-family: 'Montserrat', sans-serif; font-size: 14px; font-weight: 800; color: #001F3F; margin-bottom: 10px; }\n  .hac50-desc__compare-item { display: flex; align-items: flex-start; gap: 7px; margin-bottom: 5px; }\n  .hac50-desc__compare-item:last-child { margin-bottom: 0; }\n  .hac50-desc__compare-dot--red { color: #C8102E; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .hac50-desc__compare-dot--navy { color: #001F3F; font-weight: 700; font-size: 13px; flex-shrink: 0; line-height: 1.5; }\n  .hac50-desc__compare-text { font-size: 12.5px; color: #374151; font-family: 'Open Sans', sans-serif; line-height: 1.45; }\n\n  .hac50-desc__table-wrap { overflow-x: auto; margin-bottom: 20px; }\n  .hac50-desc__table { width: 100%; border-collapse: collapse; font-size: 12.5px; font-family: 'Open Sans', sans-serif; }\n  .hac50-desc__table th { background: #001F3F; color: #FFFFFF; font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.05em; padding: 8px 12px; text-align: left; white-space: nowrap; }\n  .hac50-desc__table td { padding: 7px 12px; border-bottom: 1px solid #e2e8f0; color: #001F3F; vertical-align: top; }\n  .hac50-desc__table tr:last-child td { border-bottom: none; }\n  .hac50-desc__table tr:nth-child(even) td { background: #f8fafc; }\n  .hac50-desc__table td:first-child { font-family: 'Montserrat', sans-serif; font-weight: 700; color: #C8102E; }\n  .hac50-desc__table-note { font-size: 11.5px; color: #718096; font-family: 'Open Sans', sans-serif; margin-top: 6px; font-style: italic; }\n\n  .hac50-desc__specs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 20px; }\n  .hac50-desc__spec { background: #F3F6F8; border: 1px solid #e2e8f0; border-radius: 5px; padding: 10px 12px; }\n  .hac50-desc__spec-label { font-family: 'Montserrat', sans-serif; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: #718096; margin-bottom: 3px; }\n  .hac50-desc__spec-value { font-family: 'Montserrat', sans-serif; font-size: 12.5px; font-weight: 700; color: #001F3F; line-height: 1.35; }\n  .hac50-desc__spec--highlight { background: #001F3F; border-color: #001F3F; }\n  .hac50-desc__spec--highlight .hac50-desc__spec-label { color: rgba(255,255,255,0.5); }\n  .hac50-desc__spec--highlight .hac50-desc__spec-value { color: #FFFFFF; }\n  .hac50-desc__spec--amber { background: #fffbeb; border-color: #d97706; }\n  .hac50-desc__spec--amber .hac50-desc__spec-label { color: #92400e; }\n  .hac50-desc__spec--amber .hac50-desc__spec-value { color: #92400e; }\n\n  .hac50-desc__warranty { display: flex; align-items: center; gap: 10px; background: #001F3F; border-radius: 5px; padding: 12px 16px; }\n  .hac50-desc__warranty-text { font-family: 'Montserrat', sans-serif; font-size: 13px; font-weight: 700; color: #FFFFFF; }\n  .hac50-desc__warranty-sub { font-size: 12px; color: rgba(255,255,255,0.6); font-family: 'Open Sans', sans-serif; margin-top: 2px; }\n\n  @media (max-width: 480px) {\n    .hac50-desc__compare { grid-template-columns: 1fr; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"hac50-desc\"\u003e\n\n  \u003cp class=\"hac50-desc__intro\"\u003eThe standard HAC option set scaled to 6\"–14\" round duct. Quarter-turn actuator on a ¼\" drive shaft — same spring return fail-safe, same PO\/PC configuration, same end switch and relay options as the standard HAC, rated for the torque demands of larger blade areas. CSA certified. HAC-50 and HAC-51 are the same product — the only difference is whether the relay is optional (HAC-50) or standard on every unit (HAC-51).\u003c\/p\u003e\n\n  \u003cdiv class=\"hac50-desc__warning\"\u003e\n    \u003cstrong\u003eConfirm PO vs. PC before ordering.\u003c\/strong\u003e The action is factory-set and cannot be changed after installation. PO is correct for fresh air intake and make-up air — duct seals when the system is off. PC is used only when fail-open on power loss is required. Note: 7\" is not available in this series — use the standard HAC (Hoyme drive, available to 9\") for 7\" applications.\u003c\/div\u003e\n\n  \u003cdiv class=\"hac50-desc__bullets\"\u003e\n\n    \u003cdiv class=\"hac50-desc__bullet\"\u003e\n      \u003cspan class=\"hac50-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac50-desc__bullet-text\"\u003e\u003cstrong\u003eQuarter-turn ¼\" drive shaft actuator\u003c\/strong\u003e — rated for the torque requirements of 6\"–14\" blade areas under duct static pressure conditions where the standard Hoyme drive is not\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac50-desc__bullet\"\u003e\n      \u003cspan class=\"hac50-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac50-desc__bullet-text\"\u003e\u003cstrong\u003eSame spring return fail-safe as the standard HAC\u003c\/strong\u003e — blade springs to fail-safe position on power loss regardless of duct pressure; PO or PC to suit the application\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac50-desc__bullet\"\u003e\n      \u003cspan class=\"hac50-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac50-desc__bullet-text\"\u003e\u003cstrong\u003eFull option set available on all sizes\u003c\/strong\u003e — end switch, relay, heat bypass (-H), insulated body (-L); all factory-installed\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac50-desc__bullet\"\u003e\n      \u003cspan class=\"hac50-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac50-desc__bullet-text\"\u003e\u003cstrong\u003e¼\" drive shaft — industry standard interface\u003c\/strong\u003e — actuator replacement not limited to a single proprietary part\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac50-desc__bullet\"\u003e\n      \u003cspan class=\"hac50-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac50-desc__bullet-text\"\u003e\u003cstrong\u003eCSA certified\u003c\/strong\u003e — complete assembly, Canadian and US installations\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"hac50-desc__bullet\"\u003e\n      \u003cspan class=\"hac50-desc__bullet-check\"\u003e✓\u003c\/span\u003e\n      \u003cspan class=\"hac50-desc__bullet-text\"\u003e\u003cstrong\u003eSizes above 14\"?\u003c\/strong\u003e — see HAC-40 (Belimo TFB24, 6\"–20\") or the HAC Belimo series for modulating and floating point control\u003c\/span\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hac50-desc__compare\"\u003e\n    \u003cdiv class=\"hac50-desc__compare-card hac50-desc__compare-card--red\"\u003e\n      \u003cdiv class=\"hac50-desc__compare-title\"\u003eHAC-50\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__compare-item\"\u003e\n        \u003cspan class=\"hac50-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hac50-desc__compare-text\"\u003eRelay optional — add when needed on specific units\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__compare-item\"\u003e\n        \u003cspan class=\"hac50-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hac50-desc__compare-text\"\u003eUse when relay is the exception — most units don't need it\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__compare-item\"\u003e\n        \u003cspan class=\"hac50-desc__compare-dot--red\"\u003e✓\u003c\/span\u003e\u003cspan class=\"hac50-desc__compare-text\"\u003eCleaner ordering when relay-free is the default configuration\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac50-desc__compare-card hac50-desc__compare-card--navy\"\u003e\n      \u003cdiv class=\"hac50-desc__compare-title\"\u003eHAC-51\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__compare-item\"\u003e\n        \u003cspan class=\"hac50-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hac50-desc__compare-text\"\u003eRelay standard — included on every unit automatically\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__compare-item\"\u003e\n        \u003cspan class=\"hac50-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hac50-desc__compare-text\"\u003eUse when relay is required on all units — simplifies ordering on multi-zone systems\u003c\/span\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__compare-item\"\u003e\n        \u003cspan class=\"hac50-desc__compare-dot--navy\"\u003e→\u003c\/span\u003e\u003cspan class=\"hac50-desc__compare-text\"\u003eSpecify size, action, end switch — relay is just there\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hac50-desc__table-wrap\"\u003e\n    \u003ctable class=\"hac50-desc__table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eSize\u003c\/th\u003e\n          \u003cth\u003eHAC-50 (relay optional)\u003c\/th\u003e\n          \u003cth\u003eHAC-51 (relay standard)\u003c\/th\u003e\n          \u003cth\u003eActuator\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003e6\"\u003c\/td\u003e\n\u003ctd\u003eHAC-0650-xxx\u003c\/td\u003e\n\u003ctd\u003eHAC-0651-xxx\u003c\/td\u003e\n\u003ctd\u003eQuarter-turn, ¼\" drive\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e8\"\u003c\/td\u003e\n\u003ctd\u003eHAC-0850-xxx\u003c\/td\u003e\n\u003ctd\u003eHAC-0851-xxx\u003c\/td\u003e\n\u003ctd\u003eQuarter-turn, ¼\" drive\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e9\"\u003c\/td\u003e\n\u003ctd\u003eHAC-0950-xxx\u003c\/td\u003e\n\u003ctd\u003eHAC-0951-xxx\u003c\/td\u003e\n\u003ctd\u003eQuarter-turn, ¼\" drive\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e10\"\u003c\/td\u003e\n\u003ctd\u003eHAC-1050-xxx\u003c\/td\u003e\n\u003ctd\u003eHAC-1051-xxx\u003c\/td\u003e\n\u003ctd\u003eQuarter-turn, ¼\" drive\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e12\"\u003c\/td\u003e\n\u003ctd\u003eHAC-1250-xxx\u003c\/td\u003e\n\u003ctd\u003eHAC-1251-xxx\u003c\/td\u003e\n\u003ctd\u003eQuarter-turn, ¼\" drive\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e14\"\u003c\/td\u003e\n\u003ctd\u003eHAC-1450-xxx\u003c\/td\u003e\n\u003ctd\u003eHAC-1451-xxx\u003c\/td\u003e\n\u003ctd\u003eQuarter-turn, ¼\" drive\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n    \u003cdiv class=\"hac50-desc__table-note\"\u003e7\" is not available in this series — use the standard HAC (Hoyme drive, available to 9\") for 7\" applications.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hac50-desc__specs\"\u003e\n    \u003cdiv class=\"hac50-desc__spec hac50-desc__spec--highlight\"\u003e\n      \u003cdiv class=\"hac50-desc__spec-label\"\u003eActuator\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__spec-value\"\u003eQuarter-turn — ¼\" drive shaft\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac50-desc__spec\"\u003e\n      \u003cdiv class=\"hac50-desc__spec-label\"\u003eSizes\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__spec-value\"\u003e6\", 8\", 9\", 10\", 12\", 14\"\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac50-desc__spec\"\u003e\n      \u003cdiv class=\"hac50-desc__spec-label\"\u003eVoltage\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__spec-value\"\u003e24 Vac\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac50-desc__spec\"\u003e\n      \u003cdiv class=\"hac50-desc__spec-label\"\u003eAction\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__spec-value\"\u003ePO or PC\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac50-desc__spec\"\u003e\n      \u003cdiv class=\"hac50-desc__spec-label\"\u003eCertification\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__spec-value\"\u003eCSA — complete assembly\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"hac50-desc__spec hac50-desc__spec--amber\"\u003e\n      \u003cdiv class=\"hac50-desc__spec-label\"\u003e7\" Available?\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__spec-value\"\u003eNo — use standard HAC\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- CORRECTION: ADP-0241-S5A appears in the SharePoint source document but is not\n       listed in the 2026 price list. Specific model reference removed, consistent with\n       corrections applied to HAC, HAC-L, MAC, HAC-E, HAC-12.\n       Do not reinstate until factory confirms the correct model number. --\u003e\n  \u003cdiv class=\"hac50-desc__note\"\u003e\n    \u003cstrong\u003eNeed ADP furnace fan sequencing?\u003c\/strong\u003e For ventilation code compliance — fresh air interlocked with furnace fan — use an ADP relay adaptor with the end switch variant (SPO or SPC). The ADP opens the damper first, confirms position via end switch, then energizes the furnace fan. See the \u003ca href=\"\/products\/adp-damper-interlock-relay-adaptor\"\u003eADP series\u003c\/a\u003e for the correct model for your application. For sizes above 14\" see \u003ca href=\"\/products\/hac-belimo-tfb24-inline-damper-24vac\"\u003eHAC-40 (Belimo TFB24)\u003c\/a\u003e.\u003c\/div\u003e\n\n  \u003cdiv class=\"hac50-desc__warranty\"\u003e\n    \u003csvg style=\"flex-shrink: 0;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"20\" width=\"20\"\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\n      \u003cpath stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.8\" stroke=\"#C8102E\" d=\"M9 12l2 2 4-4\"\u003e\u003c\/path\u003e\n    \u003c\/svg\u003e\n    \u003cdiv\u003e\n      \u003cdiv class=\"hac50-desc__warranty-text\"\u003e2-year electrical  ·  10-year mechanical warranty\u003c\/div\u003e\n      \u003cdiv class=\"hac50-desc__warranty-sub\"\u003eCSA certified  ·  Made in Canada  ·  ¼\" drive shaft — industry-standard actuator interface\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hoyme Manufacturing","offers":[{"title":"6\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43085330546731,"sku":"HAC-0650-OPO","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43085330579499,"sku":"HAC-0650-SPO","price":285.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43085330612267,"sku":"HAC-0651-OPO","price":308.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43085330645035,"sku":"HAC-0651-SPO","price":336.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43085330677803,"sku":"HAC-0650-OPC","price":256.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43085330710571,"sku":"HAC-0650-SPC","price":285.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43085330743339,"sku":"HAC-0651-OPC","price":308.0,"currency_code":"CAD","in_stock":true},{"title":"6\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43085330776107,"sku":"HAC-0651-SPC","price":336.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43085330808875,"sku":"HAC-0850-OPO","price":259.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43085330841643,"sku":"HAC-0850-SPO","price":287.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43085330874411,"sku":"HAC-0851-OPO","price":310.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43085330907179,"sku":"HAC-0851-SPO","price":338.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43085330939947,"sku":"HAC-0850-OPC","price":259.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43085330972715,"sku":"HAC-0850-SPC","price":287.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43085331005483,"sku":"HAC-0851-OPC","price":310.0,"currency_code":"CAD","in_stock":true},{"title":"8\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43085331038251,"sku":"HAC-0851-SPC","price":338.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331071019,"sku":"HAC-0950-OPO","price":353.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43085331103787,"sku":"HAC-0950-SPO","price":378.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43085331136555,"sku":"HAC-0951-OPO","price":402.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43085331169323,"sku":"HAC-0951-SPO","price":431.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331202091,"sku":"HAC-0950-OPC","price":353.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43085331234859,"sku":"HAC-0950-SPC","price":378.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43085331267627,"sku":"HAC-0951-OPC","price":402.0,"currency_code":"CAD","in_stock":true},{"title":"9\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43085331300395,"sku":"HAC-0951-SPC","price":431.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331333163,"sku":"HAC-1050-OPO","price":370.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43085331365931,"sku":"HAC-1050-SPO","price":397.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43085331398699,"sku":"HAC-1051-OPO","price":422.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43085331431467,"sku":"HAC-1051-SPO","price":448.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331464235,"sku":"HAC-1050-OPC","price":370.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43085331497003,"sku":"HAC-1050-SPC","price":397.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43085331529771,"sku":"HAC-1051-OPC","price":422.0,"currency_code":"CAD","in_stock":true},{"title":"10\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43085331562539,"sku":"HAC-1051-SPC","price":448.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331595307,"sku":"HAC-1250-OPO","price":378.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43085331628075,"sku":"HAC-1250-SPO","price":408.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43085331660843,"sku":"HAC-1251-OPO","price":431.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43085331693611,"sku":"HAC-1251-SPO","price":458.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331726379,"sku":"HAC-1250-OPC","price":378.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43085331759147,"sku":"HAC-1250-SPC","price":408.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43085331791915,"sku":"HAC-1251-OPC","price":431.0,"currency_code":"CAD","in_stock":true},{"title":"12\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43085331824683,"sku":"HAC-1251-SPC","price":458.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Open (PO) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331857451,"sku":"HAC-1450-OPO","price":397.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Open (PO) \/ End Switch (No Relay)","offer_id":43085331890219,"sku":"HAC-1450-SPO","price":425.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Open (PO) \/ Relay (No End Switch)","offer_id":43085331922987,"sku":"HAC-1451-OPO","price":448.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Open (PO) \/ Relay + End Switch","offer_id":43085331955755,"sku":"HAC-1451-SPO","price":476.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Close (PC) \/ Standard (No Relay \/ No End Switch)","offer_id":43085331988523,"sku":"HAC-1450-OPC","price":397.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Close (PC) \/ End Switch (No Relay)","offer_id":43085332021291,"sku":"HAC-1450-SPC","price":425.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Close (PC) \/ Relay (No End Switch)","offer_id":43085332054059,"sku":"HAC-1451-OPC","price":448.0,"currency_code":"CAD","in_stock":true},{"title":"14\" \/ Power Close (PC) \/ Relay + End Switch","offer_id":43085332086827,"sku":"HAC-1451-SPC","price":476.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/files\/image_84.png?v=1775770085"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/3459\/3067\/collections\/HAC_C.png?v=1775506263","url":"https:\/\/www.hoyme.com\/collections\/zone-control-dampers.oembed","provider":"Hoyme Manufacturing","version":"1.0","type":"link"}