I m guessing in the neighborhood of 200f.
Attic fan temperature sensor.
When it comes to adjusting the thermostat of your attic s fan it s best to adjust it to approximately 90 to 95 degrees.
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.
Amazon s choice for attic thermometer.
Govee wireless thermometer hygrometer mini bluetooth indoor temperature humidity sensor with free data export temp humidity monitor with app alert for home greenhouse pet cigar humidor.
Most manufacturers and contractors recommend a temperature setting between 100 and 110 degrees fahrenheit.
That said attic fans are not the best choice for cooling attics especially if you have central air conditioning.
Attic ventilators generally turn on between 90 and 110 degrees fahrenheit.
Attic fan thermostat switch type spst switch action close on rise number of switches 1 control range 80 degrees to 130 degrees f differential 15 degrees f height 4 9 16 in width 2 13 16 in depth 2 1 8 in sensor type bimetal for use with attic ventilators fans and dampers color beige silver face application attic fan control cooling only 120 to 240vac 13 8a 10a 13 8a 10a 82 8a 60a standard 2 in.
This won t work as i also had attic fans installed as part of the rebuild and they don t even kick on until 140f to cool the attic so obviously way above 140f is needed.
The reason is that attic fans depressurize attics and can rob air conditioned air from the main body of the house greatly decreasing efficiency.
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