A friend of mine in the southern California desert installed a vent fan in the louvre at one end of the attic, controlled by a thermostat that comes on at 85 degrees F. His power bill went down about $175 per month during the summer months.
No hole in the roof.
KrazyKyngeKorny (Krazy, not stupid)
On Tue, May 29, 2012 at 9:11 AM, <larencorie@axilar.net> wrote:
Posted by: "Doug Kalmer" dougkalmer@gmail.com
> It takes energy from the rising hot air to turn the turbine, that
> slows the air down. Anything put into the hole in the roof restricts
> air flow. Insect screening also slows air flow. Oh yeah, mine also
> leaked in heavy rain.
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