Attic Exhaust Fan Temperature Setting

What temperature should attic fan be set at.

Attic exhaust fan temperature setting.

That said attic fans are not the best choice for cooling attics especially if you have central air conditioning. Most manufacturers and contractors recommend a temperature setting between 100 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. Most attic fans operate with a thermostat that automatically turns the fan on and off based on a temperature the homeowner sets.

The reason is that attic fans depressurize attics and can rob air conditioned air from the main body of the house greatly decreasing efficiency. 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. If your attic soars above 100 degrees and reaches the 150 mark its time to consult professionals. 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 ventilators generally turn on between 90 and 110 degrees fahrenheit. It essentially pulls that cooled air through cracks and crevices in the attic floor and also through holes that allow for wires and pipes. Likewise adjustable thermostats will shut the fan off.