07-10-2017, 11:53 AM
I installed a solar powered fan in our ceiling. It blows the air from the house into the attic where it displaces the hot air. This scheme is usually called a "whole house fan" because it brings outdoor air into the house and also displaces the hot air in the attic, so it performs two functions unlike an attic fan. Because I didn't want to cut a hole in my ceiling I cut a hole for the fan into a piece of wood that was cut to the same size as the drywall for the attic hatch and replaced the attic hatch with my homemade concoction. I used to be able to feel the heat coming off our ceiling, now I do not. It still gets really hot up there but not as bad. Since it is solar powered, when the roof is getting the most amount of sun is when the fan spins the fastest.
Hawaii is offering energy rebates on whole house fans and attic fans: https://hawaiienergy.com/for-homes/rebates/hvac
" Whole House Fan
Get a $75 rebate on a whole house fan that draws cooler, outside air through your living space by pushing the hot air out of the home and out of the attic vents, creating a cooling breeze."
ETA: I bought mine on eBay. I think it was a 30 watt solar panel and a 12v fan with the pair rated to move 1500 cubic feet of air per minute at full sun.
Hawaii is offering energy rebates on whole house fans and attic fans: https://hawaiienergy.com/for-homes/rebates/hvac
" Whole House Fan
Get a $75 rebate on a whole house fan that draws cooler, outside air through your living space by pushing the hot air out of the home and out of the attic vents, creating a cooling breeze."
ETA: I bought mine on eBay. I think it was a 30 watt solar panel and a 12v fan with the pair rated to move 1500 cubic feet of air per minute at full sun.