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What is the difference between HRV and ERV?

Awnser

Heat Recovery Ventilator (HRV):

The heat recovery ventilator (HRV) is the proper choice in colder climates where there is excess humidity during the heating season, since it can eliminate it.

The HRV keeps the home supplied with a steady flow of fresh outdoor air. As stale, warm air is expelled, the heat recovery core warms the incoming fresh, colder air before it is distributed throughout the home.

The result is a constant supply of fresh air, no unpleasant drafts and greater home comfort.

 

Energy Recovery Ventilator (ERV):

The energy recovery ventilator (HRV) is suitable for colder climates, in homes where there is no humidity excess during the heating season, as well as for warmer climates homes with high outdoor humidity.

The ERV recovers heat (like the HRV); however, it also recuperates the energy trapped in humidity, which greatly improves the overall recovery efficiency.

In conditioned homes, when it is more humid outside than inside, the ERV limits the amount of humidity coming into your home.

For homes using a humidifier, whit low humidity level in winter, the ERV limits the amount of humidity expelled from your home.


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