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Old 07-22-2012, 03:18 PM   #1
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Do attic fans either electric or solar work?


Seems like both types of fans have their pluses and minuses. My home really is not a candidate for ridge and vent because of its configuration. My roofer has suggested that I need more soffit ventilation, with a possible addition of either an electric or solar attic fan. Unfortunately, their seems a lot of verbage which just at least on my part creates more confusion. Do these fans work or not work, and if they don't what is a workeable alternative?

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Old 07-22-2012, 06:30 PM   #2
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Do attic fans either electric or solar work?


I put one on my house because my attic was getting up over 130 degrees and if you needed to get up there it was un-bearable, after I installed the electric powered attic fan the temp in the attic stays a little less than 100 degrees, not bad for Florida. My house already had 4 off ridge vents and continuous ventilated soffit all the way around the house and when the wind blowed fairly strong there was good air movement but when the wind didn't blow there was little air movement in my attic, and in my opinion it's all about air movement in the attic and one of those fans will definately get some air movement in your attic.

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Old 07-23-2012, 04:59 AM   #3
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Do attic fans either electric or solar work?


They do work to move some air. That can be a good thing or a bad thing depending on the home.

At the end of the day, powered ventilators are not supposed to be a band-aid for poor insulation.
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Old 07-25-2012, 07:23 PM   #4
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Do attic fans either electric or solar work?


Attic vent fans are often a bad idea. They can suck conditioned air out of the living space through leaks. You need to make sure that you have sufficient openings in the attic for replacement air flow. You should seal air leaks to the living space.

Consider this. If you live in hot, humid areas, need to upgrade your insulation and have AC ducts in the attic, you should consider sealing the attic and insulating the roof deck.
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Old 07-25-2012, 07:59 PM   #5
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Do attic fans either electric or solar work?


Agreed. I had an attic fan in my California home and it really helped keep the house comfy without air conditioning. I had more than adequate ceiling insulation though.

Most do, but you should make sure the unit you get, if you get one, has a temperature cut-off or you could draft---God forbid---a fire.

As mentioned, spend the money first on insulation.
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