Attic Heat Fans

Using a fan to blow hot air out of the attic doesn t address the radiant heat flow from the roof to the attic floor.

Attic heat fans.

Good insulation reduces fan effectiveness. Lastly i am curious about the recommendation on your blog to reverse the ceiling fans to decrease the radiant heat transmitted from the attic through the ceiling. Your attic fan must be built from material sturdy enough to survive the excessive heat that can build up in an attic. Iliving 800 cfm shutter exhaust fan at amazon this fan can easily remove excess heat moisture and odor from any space up to 1 200 square feet.

Solar attic fans work by using sunlight to power the fan s motor to help prevent any heat or moisture build up in your attic. This has a knock on effect. The thermostat will usually start at 95 degrees fahrenheit which is the temperature that the attic fan usually starts at. But by adding powered attic fans you will draw more air into the attic.

That is a new one on me. The downside of attic ventilation fans. Cheaper fans with plastic components may begin to fail over time under these. Quietcool attic fans work almost everywhere almost anytime.

Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool. However the utility of attic ventilation fans is actually quite a controversial topic. It will help to keep the attic much cooler in the summertime. Your air conditioner doesn t have to work so hard to keep your house cool so it helps reduce your electricity bill.

There was one large flaw with the fan though while the large fan duct was insulated and it had a damper on the end that exhausted to the attic the heat build up in the attic caused heat to flow back into the house and would noticeably warm the house during the day. Your attic can reach temperatures of up to 150 ºf which can destroy the integrity of your home as well as completely destroy your roof. With an attic fan you can cool the attic to the same temperature as it is outside greatly reducing the house from heating as quickly. Trying to solve the heat gain problem in your attic by using a fan is like lying out at the beach with a fan blowing over you and thinking you re not.

Much of that heat then conducts downward and finds its way into the house. An attic fan can reduce the heat in your roof space by between 40 f and 50 f. Thanks for some very informative posts by all.