If you live in the house in the winter you may want to start thinking of ways to air seal that thing. It is in no way easy. When I run the blower door on a house with a regular whole house fan and then remove it from the equation by sealing it up (I guess a lot of people don't value them???) the air leakage reduction is absolutely stupefying. I'm talking about some really serious numbers with the blower door. On the order of hundreds of CFM @ 50. Sealing one off completely appears to be much like sealing off a plumbing bypass roughly the size of a standard double hung window. When they are removed after the test in for my job there but before the test out the results are even more staggering. It's like closing a door to the outside. I have yet to be able to reproduce such results with air sealing a decommissioned WHF but I always do give it my best. People are tearing these things out left and right here because when the auditor shows up with the IR camera and shows them the register for the fan they cry.
You will need to build a box made of some rigid substance which can be mechanically fastened to the.... whatever it gets fastened to and has a dead nuts tight air seal. That's something I can't do.
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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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