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How do you determine what size fan to put in an attic to cool it properly?

by LiveModern Webmaster last modified Apr 24, 2012 01:01 AM
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by last modified Apr 23, 2012

Our house is 2000 sq ft with cathedral ceilings in the living areas and 8 ft in the bedrooms. The company that did the house energy efficiency test said there were no govenment guidelines to size an attic fan and the websites that sell attic fans have calculators but since they sell attic fans I don't know how reliable they are. Are there any studies/edu tests that have studied this? How can we tell if the company that installs the attic fan/s has properly sized and sealed the units? Thank you




 

 

Our house is 2000 sq ft with cathedral ceilings in the living areas and 8 ft in the bedrooms. The company that did the house energy efficiency test said there were no govenment guidelines to size an attic fan and the websites that sell attic fans have calculators but since they sell attic fans I don't know how reliable they are. Are there any studies/edu tests that have studied this? How can we tell if the company that installs the attic fan/s has properly sized and sealed the units? Thank you

I recommend that you DO NOT install a power attic fan as studies have shown that the fans actually use more energy than they save by cooling the attic. 

These power...



 

 

 
 
 

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