However the utility of attic ventilation fans is actually quite a controversial topic.
How to wire an attic vent fan.
Run nm cable from the attic fan thermostat to the attic light.
This will help to avoid premature damage to the shingles or mold building up in moist hot.
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.
Use wire nuts to connect.
Bring the cable through one of the studs supporting the fan and strip about 8 in.
On average labor costs run between 100 300 and the fan itself may range from as little as 50 to more than 500.
1 square foot of intake for every 300 cfm of ventilator.
Use the hammer and staples to secure the cable to the joists at 12 inch intervals.
Pricing for attic fan installation varies depending on fan type and its location.
Multiply this number by 7 to give you the minimum cfm required for your ventilator.
Good insulation reduces fan effectiveness.
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.
A how to demonstration of wiring your xxfirestat or power attic vent thermostat.
Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool.
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.
Insert the end of the 12 2 wire into the fans junction box.
Then cut out the circle with a reciprocating saw and mount the fan over the cutout using a drill.
A rule of thumb.
Determine the attic s square footage.
Of insulation from the end.
An attic fan works by exchanging the hot air in your attic space for fresh air pulled through the vents.
Whole house fans tend to have higher overall costs than attic ventilation fans.