Look at the cold facts: Can a solar-powered attic fan do the to...
Full story: Baltimore Sun
Great article Tim, but you might want to do a little more research on solar attic fans before drawing any conclusions. The fans you are testing are bottom of the line in performance capability, so it is not suprising that you are seeing less than desirable results. Check out the 25 watt fans from Attic Breeze for a more powerful alternative. These fans will run even on overcast days. I think you will find that there is a significant difference between low-end 10 watt fans you tested and the high-end 25 watt fans available from Attic Breeze.
I agree with the above comment. You'll want to do a little more research on some higher quality solar attic fans. I have some friends that bought theirs from http://solaroenergy.com/products/solar-ventil... and they have been very satisfied. Good luck!
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