What should I be looking for in a heat recovery ventilator?
I have been doing some reading and I think I should install an HRV, I have on older home (1970s) and it doesn't have one, wondering what I should be looking for. thanks
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What type of HRV ventilation system should I use?
March 16, 2021
HRV and ERV
Choosing the right heat recovery ventilator should be based on the following criteria:
See this page on choosing between an HRV and ERV, a heat recovery ventilator or energy recovery ventilator.
Calculating the fresh air requirements of a home as well as proper placement of ducts are not easy calculations to make, so this is best left to licenced HVAC installers. All too often a DIY ventilation job or one done by an overly-confident but inexperienced general contractor will lead to either pressurization or depressurization of the home, too much air or too little, and some rooms not having enough ventilation.
HRV units should never be placed in attics, to function properly and efficiently they should be within the conditioned space with other mechanical equipment. Duct work should also be on the warm side of the insulation.
For homeowners who want an HRV, the most important thing to look for is the efficiency rate.