What is an erv in hvac?

An ERV, or Energy Recovery Ventilator, is a type of HVAC equipment that helps improve indoor air quality and energy efficiency in buildings. It works by transferring heat and moisture between incoming and outgoing air streams, allowing for fresh air to be brought into a building without sacrificing the energy used to heat or cool the air.

ERVs are particularly useful in buildings that are tightly sealed, such as modern energy-efficient homes and commercial buildings, where there is limited natural ventilation. By reducing the amount of energy needed to heat or cool incoming air, ERVs can help lower energy costs and reduce the strain on HVAC systems.

In addition to improving energy efficiency, ERVs also help maintain a comfortable and healthy indoor environment by reducing humidity levels and removing indoor air pollutants. This can lead to improved indoor air quality and increased occupant comfort.

Overall, ERVs are a valuable component of a comprehensive HVAC system, helping to balance energy efficiency, indoor air quality, and occupant comfort in buildings.