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this post was submitted on 17 Jul 2023
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Asklemmy
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I live in the southern US, and my house basically has this built-in. There’s a big fan in the middle of the house that blows air into the attic, so if you open a few windows and flip the fan on it creates a breeze through the whole house.
Make sure your sewer traps haven’t dried up though. I turned it on with the house closed up one day and it sucked in air through the shower drain in the guest bathroom that hadn’t been used in a while…
Yeah, a whole-house fan. You turn it on in the evening and it expels hot attic air from the top while sucking in cool fresh air through open windows. It actually works really well and is much more energy efficient than AC. When it gets super hot you still need AC though.
Attic fans are great. We'd run it when the sun went down to draw in the cool night air. After that we shut everything up and drew the blinds. The house would stay very cool until late the next afternoon. On super hot days we might have run the AC for a few hours in the late afternoon or evening.