They have thermostats that turn the fan on at a recommended preset temperature of 100 110 degrees.
Best way to reduce attic temperature.
Ideal attic temperature and humidity settings.
It will help to keep the attic much cooler in the summertime.
Use a thermostatically controlled roof mounted ventilator.
Again i m assuming that you re not considering a sealed attic lowering the temperature of an attic that contains ducts can reduce your air conditioning costs.
If you don t worrying about how best to keep the attic cool is a bandaid on a self inflicted wound.
When reroofing use white or pale gray shingles instead of dark ones.
Alternatively install passive vents such as gable soffit and ridge vents which are openings in the roof that allow hot air to escape.
Freezing and excessively hot outdoor temperatures rain and high.
Installing attic vents if you don t already have them is another way to assist in the movement of hot and cold air out of your attic.
Dropping the temperature from 120 150 degrees to roughly the same as the outside temperature will save you enough on your power bill to offset the purchase and installation charge.
Ideal attic temperatures and humidity settings aren t always easy to maintain.
The thermostat will usually start at 95 degrees fahrenheit which is the temperature that the attic fan usually starts at.
A ridge and soffit ventilation system an extra 200 during reroofing will reduce attic temperature to around 100 degrees.
In existing homes the question is important.
Also make sure your attic is ventilated.