Heat Recovery Ventilator06 Apr
Many people ask us how a Heat Recovery Ventilator works and what the benefit is to putting one in a new home. An HRV performs two main functions: it collects stale indoor air and it draws in outdoor air to distribute throughout the home.
Both the indoor and outdoor air streams pass through a heat transfer module, and the heat from the indoor air is used to pre-heat the outdoor air stream. Only the heat is transferred; the two air streams remain physically separate. Typically, an HRV is able to recover 70 to 80 percent of the heat from the indoor air and transfer it to the incoming outdoor air. This dramatically reduces the energy needed to heat outdoor air to a comfortable temperature.
Over a three hour period, an HRV can exchange all the air in an R-2000 home.
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