I have a 2100 sq. ft. attic and just installed a powered roof vent right in the center of the attic. My question is do I now need to block the ridge vents to keep the fan from pulling air in through the ridge vents instead of the soffit vents? Also, whats the best temp to keep it on? I have it set for 115 right now. I'm not sure if the extra electrical cost to run the fan would outweigh setting the thermostat any lower...
The soffit vents are clear but I would think that the fan would pull air in from the ridge vents also which would not effectively remove the hot air from the attic. I would think I would need to block the ridge vents so the fan could pull air from the soffit vents only.....
Do Not block the vents because you want to pull outside air in and force the hotter attic air outside....as far as the thermostat setting it is OK as well.
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