[Paul T]

Originally Posted by billybek

Heat Recovery Ventilators and Energy Recovery Ventilators are requirement in tight construction homes.
HRVs simply exchange heat from exhaust to ventilation (incoming) air.
ERVs exchange heat and pass moisture from exhaust air to incoming air in the winter and help dry the incoming air during the cooling season.
A must in any tight construction home.
https://www.venmar.ca/21-detail-advice-hrv-and-erv-why-choose-a-hrv-heat-recovery-ventilator-.html

Yes, these are a must for modern tightly constructed homes. We are wrapped, spray foam insulation, etc., and house is very airtight - we have 2 ERV’s (RenewAire) and no issues.