Energy Recovery Ventilator (ERV)
An energy recovery ventilator (ERV) is a mechanical system used in HVAC to improve indoor air quality and energy efficiency. It functions by exchanging stale, polluted indoor air with fresh outdoor air while transferring heat and moisture between the air streams. This means that in cold weather, it recovers heat and moisture from the outgoing air to warm and humidify the incoming air, and in warm weather, it transfers heat and moisture from the incoming air to the outgoing air to help keep the indoor environment cool and dry. This process helps maintain a comfortable indoor climate while reducing the energy needed for heating or cooling.
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