Attic Exhaust Fan Temperature Setting

When the temperature within the attic reaches a set point the fan will turn on and start venting the heated air cooling the attic space.

Attic exhaust fan temperature setting.

It essentially pulls that cooled air through cracks and crevices in the attic floor and also through holes that allow for wires and pipes. In general most homeowners should set their attic fan temperature to in between 90 and 110 degrees fahrenheit. What temperature should attic fan be set at. When it comes to adjusting the thermostat of your attic s fan it s best to adjust it to approximately 90 to 95 degrees.

Attic ventilators generally turn on between 90 and 110 degrees fahrenheit. Of course some environments are much hotter than others so this will be the perfect time to measure out how warm your attic will get during the most heated of seasons. Unfortunately it is impossible to state a single number as the correct temperature. That said attic fans are not the best choice for cooling attics especially if you have central air conditioning.

The reason is that attic fans depressurize attics and can rob air conditioned air from the main body of the house greatly decreasing efficiency. A house in sweltering new orleans should have a completely different temperature setting than a home in northern seattle. Most attic fans operate with a thermostat that automatically turns the fan on and off based on a temperature the homeowner sets. In particularly hot climates set the temperature higher to keep the fan from running for extended periods of time.

Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures.