How Whole House Fans Work
Since it is normally cooler in the evening and mornings, this would be the best time to turn on a whole house fan. Homeowners simply have to open a few windows and the whole house fan will cool and ventilate the entire home. Whole house fans can exchange the entire air in a home every 3-4 minutes or 15-20 time per hour. When running the system for several hours, all the hot air will be pulled out of the mass in the home. This process is called Thermal Mass Cooling. The hot air is pulled out and then vented through the attic. This allows the home to stay cooler the next day because the entirety of the home was ridden from heat. The home will feel significantly fresher because of this.