HRV's come with a control unit that allows you to adjust the fan speed. And don't forget that you may have a .25 ACH turn around but you are only loosing 40% of that heat if your unit is 6% efficient.
I have seen so many people in even leaky old houses get HRV's and say that they don't know how they ever lived without them that I can't ignore their benefits.
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Chipping away on a daily basis.
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You know you're an ecorenovator if anything worth insulating is worth superinsulating.
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S-F: "What happens when you slam the door on a really tight house? Do the basement windows blow out?"
Green Building Guru: "You can't slam the door on a really tight house. You have to work to pull it shut."
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