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The attic getting cooler is one of the most important aspects of a house fan. The thermometer in my attic regularly reads 20° F above the outside temperature. B
by athorax 8y ago
The attic getting cooler is one of the most important aspects of a house fan. The thermometer in my attic regularly reads 20° F above the outside temperature. Blowing that huge pocket of hot air out makes a huge difference.
- blacksmith_tb 8y agoMy last house had a hot attic with a window at each end - I always intended to set up four fans on relays, two in each window, so it could blow cool air in from either end, to take into account which side was cool and shady (and night they could just switch off to to reduce wear).
- JoblessWonder 8y agoIn case this ever comes up again... they have attic fans that are activated via temperature so that would your overnight issue and I'd imagine the gains by rotating which side is pulling in air is negligible compared to the effort to control it.
- secabeen 8y agoIf a hot attic is making your house hot, then you need additional sealing between the attic and the house, or additional insulation on the floor of your attic. Attic spaces are normally vented so that they are kept at outside temperatures. In the winter, attics are regularly 30 degrees below the inside temperature. A 20 degree difference in the summer shouldn't be a big deal. That said, plenty of people will sell you attic fans or other gizmos to moderate attic temperatures if you don't want to fix the insulation/sealing problems. Whole house fans do help a lot in pulling cooler outside air into the inhabited spaces.