Attic Fan Temperature Setting

What temperature should attic fan be set at.

Attic fan temperature setting. Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures. I think the normal average setting is 110 or higher if you are in a hot climate. When it comes to adjusting the thermostat of your attic s fan it s best to adjust it to approximately 90 to 95 degrees. Most manufacturers recommend setting your attic fan thermostat between 105 115 degrees and monitoring how often and how long the fan runs to adjust the setting for your home.

Most manufacturers and contractors recommend a temperature setting between 100 and 110 degrees fahrenheit. What is your attic fan set at. In particularly hot climates set the temperature higher to keep the fan from running for extended periods of time. That s why we upped the insulation in the attic floor.

The reason is that attic fans depressurize attics and can rob air conditioned air from the main body of the house greatly decreasing efficiency. Attic ventilators generally turn on between 90 and 110 degrees fahrenheit. That said attic fans are not the best choice for cooling attics especially if you have central air conditioning. Ideally your attic space will stay in the same temperature range 105 115 degrees and the only true way to tell is to stick a thermometer into your attic overnight and check the reading every couple hours.

My attic virginia breaks 100 probably every day during the summer. Most attic fans operate with a thermostat that automatically turns the fan on and off based on a temperature the homeowner sets. If your attic soars above 100 degrees and reaches the 150 mark its time to consult professionals.