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.
Best way to reduce attic temperature.
Use a thermostatically controlled roof mounted ventilator.
Seal spaces around plumbing recessed lights and vents.
The thermostat will usually start at 95 degrees fahrenheit which is the temperature that the attic fan usually starts at.
In existing homes the question is important.
It will help to keep the attic much cooler in the summertime.
They have thermostats that turn the fan on at a recommended preset temperature of 100 110 degrees.
Your attic can get as hot as 150 degrees in the summer.
Fortunately there are a number of steps you can take to reduce attic heat and lower your power bills at the same time.
Gable vents around 25 each plus 75 per vent for labor can lower attic temperatures about 10 degrees.
Also make sure your attic is ventilated.
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.
Keep that super heated air from seeping into your living space.
Alternatively install passive vents such as gable soffit and ridge vents which are openings in the roof that allow hot air to escape.
Here are ten different ways to reduce your attic heat temperature and save you money.
If you don t worrying about how best to keep the attic cool is a bandaid on a self inflicted wound.
A ridge and soffit ventilation system an extra 200 during reroofing will reduce attic temperature to around 100 degrees.
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.