Heat Recovery Ventilator

A Heat Recovery Ventilator (HRV) is a mechanical ventilation device that helps make your home healthier, cleaner and more comfortable by continuously replacing stale indoor air with fresh outdoor air.

As explained by the federal Office of Energy Efficiency, "HRVs are set apart from other mechanical ventilation devices by their ability to exchange heat between the supply and exhaust air streams, which in turn reduces the cost of heating or cooling the healthy fresh air that circulates through the home. HRVs are sometimes called air-to-air heat exchangers because they preheat or cool incoming air using exhaust air."

Read more about Heat Recovery Ventilators from Natural Resources Canada.