Field Notes Cold Mechanical Room in Winter? Look at Where the Damper Actually Seals cold air infiltrationOct 22, 2026 No 24 Vac at the Damper? When to Use the 120 Vac HAC-12, an ADP or a Transformer 120 VacOct 16, 2026 Fresh Air Damper at the Wall or in the Duct? When to Use an MOH Instead of an HAC and Hood damper selectionOct 08, 2026 Gas Dryer Make-Up Air: How to Interlock a Motorized Damper So the Dryer Only Runs When It Is Open combustion airOct 02, 2026 Motorized Flue Damper: Why It Closes When Powered and What Happens If It Does Not Open ADP relay adaptorSep 28, 2026 How to Spec a Zone Control Damper System: Sizing, Actuators, and Bypass actuatorSep 17, 2026 How to Order the Right HAC Damper: Size, Voltage, End Switch, and Action damper selectionSep 04, 2026 Combustion Air vs Fresh Air vs Make-Up Air: Which Damper Does Your Job Actually Need? combustion airAug 28, 2026 Make-Up Air for Exhaust Fans: How the ADP-1101-05A Interlock Works ADP-1101-05AAug 20, 2026 Make-Up Air Under OBC 2024 Section 9.32: What Ontario Contractors Need to Know ADP-1101-05AAug 15, 2026 Zone Control Dampers on a Single Speed Furnace: Why High Limit Trips and How to Fix It HAC-HAug 13, 2026 Cold Air From the Vents on a Ventilation Call: What Causes It and What to Check ADP relay adaptorAug 06, 2026 12 Page 1 / 2Next Get Field Notes by Email One practical article a week on damper wiring, sizing and code, written for contractors by the team that builds Hoyme dampers. Your email SubscribeFree. Unsubscribe any time. Follow us
