Energy Recovery Ventilation (ERV) is a system designed to improve indoor air quality while conserving energy. It works by exchanging stale indoor air with fresh outdoor air, capturing heat and moisture from the outgoing air to condition the incoming air. This process helps maintain comfortable temperatures and humidity levels inside buildings. ERV systems are particularly beneficial in climates with extreme temperatures, as they reduce the need for heating and cooling. By recovering energy that would otherwise be lost, these systems can lower energy costs and enhance overall efficiency in residential and commercial spaces.