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Building Science
Are Powered Attic Ventilators Ever a Good Idea?

Clearing up the ongoing confusion around the usefulness (or futility) of attic fans
Q&A Spotlight
Pondering an Attic Conversion

Adding spray foam to the underside of the roof sheathing will turn a vented attic into a conditioned space — but will it also create problems?
Musings of an Energy Nerd
Fans in the Attic: Do They Help or Do They Hurt?

Homeowners in hot climates need to understand the difference between whole-house fans and powered attic ventilators

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Are Powered Attic Ventilators Ever a Good Idea?