Proper Attic Fan Temperature Setting

Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures. Attic ventilators generally turn on between 90 and 110 degrees fahrenheit. I inspected a house recently that had the attic fan temperature settings at 115 degrees and 120 degrees one at each end of the house.

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I ve seen recommended settings to be any where from 95 degrees to 105 degrees.

Proper attic fan temperature setting.

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. Most manufacturers and contractors recommend a temperature setting between 100 and 110 degrees fahrenheit. The range on the fan is from 50 to 130 degrees f. The reason is that attic fans depressurize attics and can rob air conditioned air from the main body of the house greatly decreasing efficiency.

It essentially pulls that cooled air through cracks and crevices in the attic floor and also through holes that allow for wires and pipes. 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. As mentioned earlier adjustable thermostats give you the ability to simply set a dial and forget about the fan.

In particularly hot climates set the temperature higher to keep the fan from running for extended periods of time. 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. 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. That said attic fans are not the best choice for cooling attics especially if you have central air conditioning.

When it comes to adjusting the thermostat of your attic s fan it s best to adjust it to approximately 90 to 95 degrees. Received 0 votes on 0 posts attic fan temperature setting i just recently replaced my attic fan and need a recommendation as to what temperature setting to use. When the temperature within the attic reaches a set point the fan will turn on and.