What does an energy recovery ventilator (ERV) do?

An energy recovery ventilator (ERV) is designed to improve indoor air quality by transferring energy between the incoming and outgoing air streams. This device works by capturing the energy from exhaust air, which is typically at a different temperature and humidity level than the incoming fresh air. The ERV uses this recovered energy to precondition the incoming air, either warming it in the winter or cooling it in the summer, thereby reducing the load on heating and cooling systems.

The efficiency of an ERV in managing both temperature and humidity makes it particularly valuable in climates with extreme weather conditions. This process not only enhances comfort within the building but also leads to energy savings by reducing the demand on HVAC systems. The correct choice emphasizes the dual benefit of energy transfer and fresh air circulation, showcasing the ERV’s role in creating a more efficient environment for heating and cooling.