Most manufacturers and contractors recommend a temperature setting between 100 and 110 degrees fahrenheit.
Is it normal for an attic temperature.
Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures.
In reality however variables get in the way.
And it can cause your air conditioner to work harder than it needs to and send your energy bills soaring with the temperature.
A check the temperature an hour before sunrise.
When it comes to adjusting the thermostat of your attic s fan it s best to adjust it to approximately 90 to 95 degrees.
An unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be.
Most attic fans operate with a thermostat that automatically turns the fan on and off based on a temperature the homeowner sets.
If it s 90 degrees outside the attic temperatures shouldn t exceed 110 according to home inspector jamison brown of amerispec home inspection services in poquoson.
An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate.
The white roof lowered the attic temperature by about 20 f.
These images came from a presentation danny parker gave pdf on fsec s cool roof research the third graph shows attic temperatures from the middle of the attic for several different types of roofing as well as a sealed attic.