How To Install A Bathroom Exhaust Fan With Heater. Make sure the vent fan moves enough cubic feet per minute CFM of air for the size of your bathroom. For greatest efficiency install heater so heat is directed toward tub or shower area.
The first step in figuring out how to install a bathroom fan is cutting a hole based on the size of the fan you need. Once youre ready these are the steps to install your new exhaust heater combo. Locate the switch cable which should be sticking through the top or side of the box serving the fan or light.
Provide a separate 20 AMP circuit.
Locate the area you want to install the exhaust fan. Other vent fan installation tips include. Leave the electrical cables. Connect the red heat wire to the black wire in the 2 cable.
