[innocentoldguy]

Whole house fans are great. They cool the house, clear out the 150º air radiating from the attic, and also take a lot less energy than air-conditioners. I use both, but my air-conditioner runs a lot less since I installed the attic fan.

[taneq]

Same. Well, it's an evaporative air conditioning unit but 90% of the time we don't turn on the evap function (which is only really useful on days which are very dry and not too hot) but just run it as a fan in the evenings. Blows all the hot air out of the house and replaces it with cool night air in minutes.