Make one of your wires from the 12-2 (either red or black) a direct power to your thermostat. Make the other wire from your 12-2 run off your switch to your fan and splice it in with the wire going from the thermostat to the fan motor; in other words that switch will go straight to the fan motor.
How do I turn my attic fan on?
How to Operate an Attic Fan
- Look for the attic fan control box. …
- Turn the thermostat dial to the “Cool” setting, choosing the level of cooling you want. …
- Run the attic fan during the warmest hours of the day; from late morning to late afternoon.
- Switch off the attic fan by pressing the “Off” switch on the control box.
What temperature should your attic be in the winter?
60 degrees
The ideal attic temperature should be no less than 60 degrees in the winter and no more than 10 to 20 degrees above the outdoor temperature in the summer. If your attic temperature climbs above 130 degrees, you may start running into issues with your energy bill, as well as the integrity of your roof.
