Is an HRV/ERV absolutely necessary?
Hello GBA readers
I have recently finished some energy upgrades to my 1983 house in climate zone 6 (southern ontario). Work included exterior rigid and attic insulation, air sealing, new triple pane windows and patio doors and the installation of a couple fujitsu ductless heat pumps. My energy advisor recently completed a follow up blower door test and results came in at 1.9 ACH. Not bad, but certainly not super tight.
I was wondering if I NEED to install an hrv (it was a recommendation by advisor). If i was to install one it would involve ductwork/bulkheads which i am not to keen on or to go with several lunos systems (or similar) which could get very pricey and retrofit many holes in my envelope.
Any thoughts or ideas would be greatly appreciated, thanks!
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