Im only trying to do a 250 sq ft tiny house. Now that cold weather is here, im finding air drafts that i didnt know i had. I took extreme caution during my build process to make sure i was sealed up as tight as possible. If the fans last the winter ill be happy. Just mainly need the fresh air so i can run my main heater which is a propane unit. Didnt want to waste by cracking a window and running my bathroom exhaust fan and wasting heat that way. So figured a small hrv would work better than just wasting
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