A Whole House Fan (WHF) pulls cooler outside air in through open windows and sends hot air out through attic venting. Our WHF's are a quiet, energy efficient and a great way to cool your home. They use 1/10th of the energy of AC.
A WHF is effective when the outside temp is lower than the indoor temp. Typically when the temp outside drops to 80 or below you can turn off your AC, open your windows and cool your house.