How To Wire An Attic Vent Fan

Whole house fans tend to have higher overall costs than attic ventilation fans.

How to wire an attic vent fan.

Good insulation reduces fan effectiveness. Use wire nuts to connect. On average labor costs run between 100 300 and the fan itself may range from as little as 50 to more than 500. An attic fan works by exchanging the hot air in your attic space for fresh air pulled through the vents.

1 square foot of intake for every 300 cfm of ventilator. Insert the end of the 12 2 wire into the fans junction box. Run nm cable from the attic fan thermostat to the attic light. Of insulation from the end.

Bring the cable through one of the studs supporting the fan and strip about 8 in. An attic with 1 500 square feet x 7 1 050 cfm make sure you also have adequate air intake typically through the undereave vents. This will help to avoid premature damage to the shingles or mold building up in moist hot. Then cut out the circle with a reciprocating saw and mount the fan over the cutout using a drill.

Attach a box connector to the cable and feed the wires into the thermostat box. However the utility of attic ventilation fans is actually quite a controversial topic. Strip away about 6 inches of outer insulation and 1 2 inch of individual insulation from the end of each wire. The downside of attic ventilation fans.

Staple the cable within 8 inches of both the attic light box and the thermostat box. Leave enough cable at each end to work with. Multiply this number by 7 to give you the minimum cfm required for your ventilator. 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.

Pricing for attic fan installation varies depending on fan type and its location. Use the hammer and staples to secure the cable to the joists at 12 inch intervals. Determine the attic s square footage.