This 20-Watt Attic Gable Fan provides up to 1274 CFM (cubic feet per minute) of ventilation, and can successfully cool an attic space up to 1813 square feet. This high capacity gable fan is great for homes with smaller area and/or poor insulation, when you need to be able to move a lot of hot air.
This attic gable fan automatically regulates itself. When the sun is low in the morning, the fan runs slowly. As the Sun gets higher in the sky, your fan will automatically speed up to dissipate the extra heat. So, during the hottest part of the day, your gable fan is running at its fastest speed. And at night, it automatically shuts off.
If you prefer to fine tune the performance of your attic gable fan, you can easily install the thermostat that we include. It is prewired and ready to plug in if you choose. It uses a premium internal contacts to last millions of cycles and should outlast any attic fan. This attic gable fan thermostat automatically turns on your solar or electric attic fan at 29 deg C or 85 deg F. It automatically turns the fan off when the temperature drops below 80 deg F. Learn more about the optional thermostat here.