How To Wire A Roof Fan

Even if your roof already has ridge vents and plenty of ventilation built in it s a good idea to install gable fans or roof fans to help blow hot humid air out of the attic.

How to wire a roof fan.

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. On average labor costs run between 100 300 and the fan itself may range from as little as 50 to more than 500. Wiring ceiling fans can seem complicated but the task really just depends on the type of fan you are installing and how you want it to operate. To install an attic fan over a gable vent in your attic trace the body of the fan onto a piece of plywood that s wide enough to mount on the studs on each side of the vent.

Roof fans are mounted on plastic or sheetmetal bases that serve as flashing. Connect the black thermostat wire to the black cable wire the white thermostat wire to the white cable wire and the ground wire to the green ground screw in the box. Gable fans fit into the gable vent and can be set to operate only within. Step 8 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.

Then cut out the circle with a reciprocating saw and mount the fan over the cutout using a drill. You also want a fan that s appropriate for the square footage of your attic space by checking the manufacturer s specifications. Use wire nuts to connect the black wire from the 12 2 wire to the black or red wire in the attic fan the white wire to the white wire in the attic fan and the two ground wires. Pricing for attic fan installation varies depending on fan type and its location.

When the fan is securely mounted carry it over to the vent and nail. Whole house fans tend to have higher overall costs than attic ventilation fans. To save time use an existing roof or gable vent to install your new attic fan. A how to demonstration of wiring your xxfirestat or power attic vent thermostat.