To save time use an existing roof or gable vent to install your new attic fan.
Install thermostat for attic fan.
Attic ventilation fans are also available with humidistats as well as thermostats.
Learn how easy it is to install an attic fan.
You now need to set the temperature for the attic fan thermostat switch.
Installing an attic fan costs on average 300 to 600 with the average homeowner spending around 500 on installing a gable mounted 1 electric vent in a 1 000 sq ft.
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Step 9 turn off the breaker that powers the attic light.
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Circulating air trapped in the attic during humid conditions speeds drying reducing mold growth and early decay of the roof s structural members.
With the wiring in place the thermostat switch should work automatically.
To do this screw the thermostat cover in place and use your screwdriver to set the temperature at 105 degrees.
Attic with a thermostat 2.
This way you don t have to cut a brand new hole but simply make the hole for the vent larger so it can accommodate the fan.
Install the thermostat box cover and use the screwdriver to set the thermostat so that the fan will kick on when the attic reaches 105 degrees.
This is when the attic fan will kick in and start removing the hot air.
Wait a few minutes for the bulb to cool off before you disassemble the fixture.
You also want a fan that s appropriate for the square footage of your attic space by checking the manufacturer s specifications.
A humidistat equipped fan is a good choice for controlling excess attic humidity during the colder months.
These run 100 to 300 each and installation costs around 100 units without a thermostat run between 80 and 100 you can buy a separate thermostat humidistat controller for 40 to 50 since attics account for up to 20 percent of the average cooling bill fans that.