Whole House Fans are ECO-friendly A/C Alternatives that bring instant cooling into your home.  Our fans are designed to do a complete air exchange every 3-5 minutes. During the summer, your attic temperature can soar up to 150 degrees. Our fans purge that thermal blanket of heat from your high ceilings and attic. We recommend running your fan in the morning to bring your home and attic to the coolest temperature. Then, close your windows and enjoy a cooler home throughout the day. When the temperature drops below 80 degrees in the afternoon, turn on your fan and enjoy the lower temperatures. Many of our customers run their fans all through the night. This brings in fresh, clean air and purges the hot, stuffy air from your home and attic through your existing ventilation. Our area benefits from cool mornings and evenings, making our summers the perfect condition for Whole House Fans. In fact, the Rocky Mountains are the second largest sales area for our product. In addition to summer cooling, our fans work great in the fall and spring when indoor air quality can be at its worst. On days that reach 40 degrees, we recommend opening 4 windows, 4 inches, for 4 minutes to refresh your home, purge germs, reduce pet dander, and bring clean mountain air in. With over a 98% satisfaction rating, we know you will love our Whole House fans too!