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Originally Posted by mthomas58
my ongoing battle to improve attic ventilation to reduce temps and improve A/C performance I decided to install dual powered attic fans. I let the roofer who installed our last roof talk me into ditching our attic fan and go with ridge vents. Bad idea - they're terrible. Will be sealing up the gable vent to the right of the fans and much of the ridge vents with spray foam. I anticipate much cooler attic temps this summer!
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Your roofer should’ve known better than to install those power vents. All they’re doing is pulling air from the gable vent and the ridge vent.
Ridge vent works by convection. Air is pulled through the soffit vents up through the ridge vent.
It would’ve been better to install a power vent on the gable vent, with it sealed, like a radiator fan. But then you would need to seal the ridge vent. He would either pull air from the soffit vents or another gable vent.
You’ve got a hodgepodge of venting going on.
What type roof do you have? Hip or gable or combination?