Install a whole house fan from Grainger to help reduce utility costs. Whole house fans pull air in from open windows and exhaust it through the attic and roof. In addition to cooling the building, it also provides good attic ventilation. Cool a 500 sq. ft. small house up to a 3200 sq. ft. commercial building with the fans found here. Beat the heat without breaking the bank with a whole house fan from Grainger. Shop online today!