HRVs can be an energy-efficient way to provide necessary ventilation and air exchange in homes and buildings.
The heat recovery core transfers thermal energy between air streams, retaining indoor conditioned air heat.
This pre-heating of incoming air in winter reduces the boiler energy needed to reheat air to room temperature.
Similarly, the HRV reduces air conditioning load in summer by pre-cooling warmer incoming air.
Well-designed units can recover 60-80% of heating or cooling energy that would be lost through ventilation.
HRVs run continuously, but variable speed motors and controls minimize electrical consumption.
Newer HRV models also have very efficient ECM (electronically commutated) motors.
When properly installed and controlled, HRVs can significantly increase the overall energy efficiency of a building relative to ventilation requirements. Regular maintenance is important.
Explore How-To Videos
‘How-To’ Videos > Health & Safety > Electrical Wiring