What do HRVs and ERVs do during the cooling season?

HRVs (Heat Recovery Ventilators) and ERVs (Energy Recovery Ventilators) are designed to improve air quality in buildings while recovering energy from the stale air being expelled. During the cooling season, these systems play a crucial role in managing indoor temperatures and humidity levels.

The correct answer highlights that HRVs and ERVs absorb heat from the ventilation air entering the home and transfer that heat to the exhaust air leaving the home. This process helps to moderate the temperature of incoming air, which is especially important during hot weather. By transferring heat in this manner, the system can pre-cool the incoming warm outdoor air before it enters the living space, helping to reduce the load on air conditioning systems and maintain a more comfortable indoor environment.

This process is particularly beneficial because it enhances energy efficiency; the heat recovery minimizes the amount of cooling energy needed to maintain a comfortable indoor temperature, thus promoting sustainability and energy savings in residential properties.