Heat recovery
Aldes / Venmar HRV, 85% sensible. Defrost via reverse or hydronic preheat.
Sleep
Duct silencers. Constant-air registers. NC-30.
Heat
Primary glycol coil. Electric baseboard PID backup in each room.
Ventilation balance (study)
| Zone | Regime | Target |
|---|---|---|
| Bedrooms | HRV 85%, 15 L/s/person | NC-30, < 35 dBA |
| Washrooms | Extract 25 L/s | Negative pressure |
| Kitchen | MUA 4,500 CFM | Propane burner |
| Gym / lounge | VAV HRV | CO₂ sequence |