If your attic uses soffit vents at the bottom and gable vents at the top for ventilation having a gable vent fan drawing air into the attic would not be the best solution since it would tend to create positive pressure in the attic which could reverse the natural air flow that occurs when heat rises up through the soffit vents and out through the gable vents.
Install a gable end attic fan.
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You install an attic fan through the roof and flashed under the shingles.
Mount a gable fan by driving screws through the mounting flanges into framing members.
Gable fans are installed at the very top of your gable end walls and vented through the walls outside.
You could have an expert install your gable fan for you but if you are willing to try it yourself it is not too difficult.
If intended for using it in a garage or greenhouse then you can choose a gable attic fan.
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Then cut out the circle with a reciprocating saw and mount the fan over the cutout using a drill.
Attaching a gable vent fan pushing air inside your attic or roof out will assist in keeping the humidity and overall heat down.
Attic fan installation cost.
Attic exhaust fan gable end.
If the existing gable vent is smaller than the diameter of the fan you ll need to remove the vent and install either a larger vent or an automatic shutter.
Once searching on amazon you will find that attic fan units price range from 80 to 400 based on their performance and quality level.
On top of your standard gable vents you can also try and assist this cross flow and cooling process by installing a powered one.
Make sure that the electricity to the attic is turned off.
Decide where you want the gable vent fan to go and mark out the area using a pencil or piece of chalk.
If no junction box is available in the attic bring power up from a circuit in the room below.
Gable fans fit into the gable vent and can be set to operate only within.
For daily home use install it on your roof can be a perfect choice.
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.
Step 1 prepare the attic.
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.
Begin by removing the screws or nails.