What is a primary function of an energy recovery ventilator (ERV)?

A primary function of an energy recovery ventilator (ERV) is to facilitate the exchange of indoor and outdoor air while simultaneously recovering energy. An ERV works by transferring heat and moisture between incoming and outgoing air streams. This process allows for the fresh air to be conditioned (either heated or cooled) using the energy from the stale indoor air that is being exhausted, thus improving the overall energy efficiency of a building's ventilation system.

This air exchange is critical because it helps maintain indoor air quality while minimizing the energy costs associated with heating or cooling incoming fresh air. By using this energy recovery process, an ERV can provide a balanced ventilation system that not only ensures acceptable air quality but also aids in maintaining comfortable humidity levels.