DIY Home Improvement, Remodeling & Repair Forum > Appliances > HVAC > Advice - Solar Attic Vent Fans !




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Old 04-09-2008, 12:16 AM  
sandy2982
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Default Advice - Solar Attic Vent Fans !

My roof gets direct sun from noon through late afternoon and I imagine this is making the house hotter. I have some attic ventilation, but I thought about installing a solar attic vent fan. Will it do much?


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Old 04-09-2008, 06:35 AM  
CraigFL
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My personal opinion is that ridge vents work best and they are cheap and easy to install-- unless of course you have an expensive roof like tile, slate or metal.


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Old 04-15-2008, 12:46 AM  
sandy2982
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You're right Mr Craig but I have a tiled roof so I guess its gonna work out expensive.Do you have any suggestions which could help me out finish this task in a lower budget ???
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Old 04-15-2008, 10:53 AM  
guyod
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first you need to determine the size of roof you have and what existing venting you have.

Then research fans. they will tell you what size roof they will vent and or the amount of air they move. compare this with solar and wired and see what will work for your roof.
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Old 04-15-2008, 11:53 PM  
glennjanie
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A continious soffit vent 1" wide and large gable vents would do a wonderful job and would continue to work naturally. No need to have any fans or whirlybirds.
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Old 04-16-2008, 05:33 PM  
GarryVernne
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Don't most roofs have the soffits and gable vents in the first place?
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Old 04-16-2008, 06:20 PM  
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You'd be surprised how many older houses have no attic venting at all.
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Old 05-02-2008, 08:34 AM  
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Default solar attic fan

A solar attic fan is an easy thing to install if the problem is really a hot attic. If your problem is a hot house, go with a whole house fan.

Good luck,
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Old 06-12-2008, 11:50 PM  
mtcone
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Quote:
Originally Posted by sandy2982 View Post
My roof gets direct sun from noon through late afternoon and I imagine this is making the house hotter. I have some attic ventilation, but I thought about installing a solar attic vent fan. Will it do much?

Yeah. As long as your solar attic fan has a flow rate in CFM = (attic volume x 10)/60

It will increase your AC Unit(s) efficiency and prevent ice dams in your eaves in the winter
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Old 06-13-2008, 05:43 AM  
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Default Good advice

The more ventilation ,the happier the roof and attic.


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