Heat Recovery Ventilator (HRV) versus Energy Recovery Ventilator (ERV)
Indoor air quality has actually gotten worse with the “tightening” of homes. Replacing windows/doors etc is really a smart idea to save on energy. But it also traps in pollutants. To truly achieve the cleanest, freshest air possible, it is essential to include a HRV or ERV to your homes HVAC system. After your air passes through your HRV or ERV you will be breathing the crystal clear air you are craving.
Heat Recovery Ventilator (HRV)
A heat recovery ventilator (HRV) is typically used in a climate where the heating season is longer than the cooling season. As the exhaust air is being sent outside during the heating season, the heat from that exhaust is being recovered and put into the cooler fresh air coming into the home to pre-heat it. Depending on the model, up to 85% of heat can be recovered from the exhausted air.
During the cooling season the opposite is true. The heat is taken from the incoming fresh air and is added to the exhaust air leaving the home. Again helping with cooling efficiency.
Energy Recovery Ventilator (ERV)
An energy recovery ventilator (ERV) is typically used in a climate where the cooling season is longer than the heating season. It is similar to a HRV but also includes a humidity regulator that can remove excess humidity or add humidity depending on the season.
An air changer is simply that. It will bring fresh outside air into the home while turning over the same amount of stale air to the outside. There is no heat or humidity effect with this unit.
Every home’s air quality situation is different and we recommend that you consult with one of our professionals to see whether an HRV or ERV is right for you.