Attic Exhaust Fan Temperature Setting

If your attic soars above 100 degrees and reaches the 150 mark its time to consult professionals.

Attic exhaust fan temperature setting.

Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures. 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. The reason is that attic fans depressurize attics and can rob air conditioned air from the main body of the house greatly decreasing efficiency. That said attic fans are not the best choice for cooling attics especially if you have central air conditioning.

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. 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. Attic ventilators generally turn on between 90 and 110 degrees fahrenheit.

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 attic fans operate with a thermostat that automatically turns the fan on and off based on a temperature the homeowner sets. Likewise adjustable thermostats will shut the fan off.