Any problem with this plan for a retrofit HRV after blower door test?
Building a new trac home in Syracuse NY. The builder is obligated to meet the 7ACH standard in the previous (?) code. At that level of leakiness a house probably doesn’t need any kind of ventilation.
I have spent the last 3 weekends at the house foaming and sealing every nook and cranny that I could find. I am starting to think that the house may be tight enough that it needs active ventilation.
Some details: fiberglass insulation, builder grade windows, lots of air sealing, 1200 cfm range hood fan over an indoor grill, 3000 sqft ranch including 1000 sqft in the basement, max of 4 occupants and 4 bathrooms, one with a 250(?) cfm fan. Hi efficiency, 2 stage gas forced air furnace.
After closing my plan would be to have a blower door test done and decide whether I need ventilation. I had an HRV in my last home and think I could buy one on line and do the installation my self.
2 questions: What reading on a blower door test would indicate the need for mechanical ventilation? Given my situation, would an HRV be the way to go or are there other options? Cost is obviously a concern and DIY friendly would be a plus.
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