power gable fan

Old 06-21-02, 12:21 AM
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power gable fan

I have a friend who doesnt have air conditioning in a 2 story house with pretty highly pitched roof. She had asked me about gable fans and I looked around and found some competitive prices and she seems interested. How much cooling could actually be achieved/helped by installing a power gable fan with shutter and auto thermostat in an attic? I dont have that type of attic and i have ridge vent so im not sure if its a waste of money for her or a good idea? Would monitoring the temperature be a good indication of how much cooling could be achieved? I really havent yet been up in the attic so i suppose i should venture out.. its on my TO DO list. Just dont want to tell her it will be amazing and have it suck. Thanks for any info---Josh
Old 06-21-02, 01:09 PM
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I had a gable fan in a single level ranch. The attic was cooler, but I couldn't notice a difference on the main floor. I wouldn't recommend it.

In my new house, I have a "whole house" fan. I like it! It's mounted in the ceiling and draws air from the house, into the attic, then out the vents. It's fairly powerful. It will move quite a bit of air.
Old 06-21-02, 04:39 PM
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The power gable fans are not a cooling fan like you or she may be thinking. They are powerful fans which take the heat out of the attic. Heat will enter through the roof and build up in the attic. It is not hard at all to have your attic at 110 to 120 degrees in the summer. Usually they set the thermostats about 95 degrees. This gets the heat out of the house. It cools by effect, which means if the heat build up continues, it forces its way down through the house, kinda like ceiling heat. By getting rid of the heat, you lower portion of the house stays cooler.
Old 06-21-02, 08:30 PM
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Attic ventilation

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