Description
Product image is representative only. Actual product may differ in appearance depending on size, configuration, and options selected at order.
Counter-flow heat exchanger driven entirely by your existing furnace fan. No electricity draw at the unit, no filters to maintain, no defrost interruptions. NRC Canada measured 84% winter sensible effectiveness versus 66% for a conventional HRV in matched research houses — and zero defrost interruptions versus 64 hours of interrupted fresh air delivery over a two-week winter test. These are government-measured numbers from Project Report A1-004289, 2014.
✓ Zero electricity draw at the unit — no motor, no controls, no power connection; only the exhaust fan draws power (0.07 kWh/day measured by NRC versus 1.96 kWh/day for the HRV blower motors)
✓ Zero defrost interruptions in NRC 14-day winter test — ice accumulation melts automatically during furnace firing cycles as a side effect of normal heating operation; no dedicated defrost sequence, no fresh air interruption
✓ No filters — ever — the 2" diameter aluminum passages are too large to plug under normal residential use; no filter media, no filter housings, no maintenance schedule
✓ Counter-flow core — 84% winter effectiveness — fresh and exhaust airstreams travel in opposite directions through adjacent aluminum passages; heat transfers across the full 40" core length; NRC-measured 18 percentage points above the tested HRV
✓ Incoming air pre-warmed to +14°C at -30°C outdoor — NRC measured; outdoor air at -30°C arrives at the supply plenum at +14°C during normal operation; +60°C during furnace firing cycles
✓ Lifetime core warranty — money-back guarantee with heat recovery — aluminum counter-flow core with no moving parts; contact Hoyme for full guarantee terms
Requires a forced-air furnace system. The HAE has no motor of its own — the furnace fan provides all motive force. Without a forced-air furnace, the HAE cannot operate. For buildings with radiant heat, boilers, or mini-split systems without forced-air distribution, a conventional HRV or ERV is the correct specification. Also confirm with your AHJ if local code specifically requires an HRV/ERV unit by name before specifying the HAE on a permitted application.
| NRC Test Metric | HAE Result | Conventional HRV |
|---|---|---|
| Winter sensible effectiveness | 84% | 66% |
| Summer sensible effectiveness | 72% | 61% |
| Defrost interruptions — 14-day winter test | Zero | ~64 hours (no fresh air) |
| Max defrost time in a single day | Zero | 6.75 hours |
| Fan energy per day | 0.07 kWh | 1.96 kWh |
| Winter energy change vs. baseline | +2.6% (unbalanced airflow) | Baseline |
| Summer energy change vs. baseline | −11.2% | Baseline |
100-Series
Up to 120 CFM
Single-family residential — standard application; approx. 14"×13"×52"
200-Series
Up to 220 CFM
Larger residential or light commercial; approx. 14"×16"×52"
500-Series
Up to 600 CFM
Commercial — multiple units installable in parallel; approx. 14"×23"×100"
Electricity at Unit
Zero — furnace fan driven
Winter Effectiveness
84% sensible (NRC measured)
Defrost
Automatic — zero interruptions
Filters
None required — ever
Core Warranty
Lifetime — aluminum counter-flow
Winter Energy Note
+2.6% from unbalanced airflow (NRC)
Requires
Forced-air furnace system
Source
NRC Report A1-004289, 2014
Exterior terminations required. Two exterior wall penetrations needed — one fresh air inlet, one stale air exhaust outlet. Pair the inlet with an OOH All Weather Hood (passive) or MAC/MOH if powered close is required. Pair the exhaust outlet with a BDH Back Draft Hood. Double hood kit option available — specify at order.
Lifetime core warranty · Money-back guarantee with heat recovery
NRC Project Report A1-004289, 2014 · Made in Canada