Just realized how much a simple attic fan can actually save you on cooling costs

I was reading an old energy guide from my utility company and it said a properly sized attic fan can cut your AC use by up to 30% in the summer. I always thought they were just for moving hot air, not a real money saver. Has anyone actually installed one and seen a drop in their bill?

3 comments

3 Comments

matthewsullivan2mo ago

Yeah my neighbor swears by his, but @casey843 has a point about the payback time.

casey8432mo ago

30% sounds like a huge claim, where's the proof? I feel like those utility guides always push the best case scenario to get you to buy stuff. Wouldn't you need a perfectly sealed house and perfect insulation for that to even work? I'm not convinced the fan cost and install gets paid back that fast.

emery_craig1mo ago

Did you look into whether your attic has enough vents for the fan to actually pull fresh air through? I put one in a few years ago and my electric bill dropped about 40 bucks a month in the summer, which covered the fan cost within a year. My house isn't perfectly sealed either, but the fan definitely takes the edge off on those real hot afternoons.