Heat Recovery Ventilation (HRV)

This is a must have for tightly sealed, energy efficient homes, the HRV system exchanges stale indoor air with fresher outdoor air, resulting in cleaner air for the whole family.

An HRV is a controlled ventilation system that reduces high humidity, pollutants and odours by replacing stale air with fresh warm air. Exhaust air is not only stale and damp, but warm. It is this warmth that is used to preheat fresh air as it enters your home.

HOW DOES HEAT RECOVERY WORK:

Heat recovery ventilation works independently of your normal heating system. ... Exhaust air and outside cold air flow past each other without mixing physically but the heat is drawn from the stale exhaust air to the cold outside air, which is then fed back down into the pipes and into the rooms. The stale air, minus its heat, is then expelled into the atmosphere.

HOW IMPORTANT IS HEAT RECOVERY IN AN H.V.A.C SYSTEM:

A typical heat recovery system in buildings consists of a core unit, channels for fresh air and exhaust air, and blower fans. ... Heat recovery systems typically recover about 60–95% of the heat in exhaust air and have significantly improved the energy efficiency of buildings .