Summer Heat From Attic Fan

Summer attic air temperatures with old terra cotta colored asphalt shingles peaked at 140 to 145 at 18 above the blown in fiberglass insulation layer at the attic floor.

Summer heat from attic fan. Your attic can get as hot as 150 degrees in the summer. During the summer this leads to the hot air from the attic seeking out the cooler conditioned floors below. Known as the primetime for heat and humidity this is one of the most important seasons to make sure that your attic fan is adjusted correctly. Poor sealing insulation and ventilation.

They have thermostats that turn the fan on at a recommended preset temperature of 100 110 degrees. This makes it harder for your cooling system to do its job efficiently driving up energy costs and bringing down home comfort. On one hand the national renewable energy laboratory said attic ventilation reduces attic temperature 10 to 25 degrees and slows the transfer of heat into the living space on the other the florida solar energy center university of central florida found that attics with nominal natural ventilation and r 19 ceiling insulation do not need powered vent fans. That is a.

Since your attic can effortlessly soar above 95 degrees on average it s best to make sure that this space doesn t reach ten degrees above the day s forecast as many industry professionals can. Properly sealing these leaks can save as much as 10 every month on your power bill. I am curious about the recommendation on your blog to reverse the ceiling fans to decrease the radiant heat transmitted from the attic through the ceiling. Keep that super heated air from seeping into your living space.