The Whole House Fan is an amazing solution to the problem of increasing energy cost. A Whole House Fan takes the warm air from every part of your home and replaces it with the cooler outside air, early in the morning and later in the evening. The exclusive Zephyr blade makes it one of the quietest fans available! Through the advanced design of the new Zephyr Blade we are able to use less energy while producing more power! Our Whole House Fan is the most advanced solution to energy efficient cooling.