Solar Attic Fans Do They Work

Depending on what your utility charges that s about 40 per year.

Solar attic fans do they work.

Theory behind attic fans is they work on the principle of drawing hot air out of the attic and pushing it outside through the gable or roof levels. Solar attic fans how they work. But after seeing my solar powered attic fan work i have a long list of cons solar powered attic fan checklist. Cold air is at the bottom and warm air is at the top.

I saw an advertisement for a solar powered attic fan and that seems like a great. This is basically how air naturally moves. Fans don t move lots of air. Ad the infrared rays from the sun are powerful.

Here is some information so you can decide whether an attic fan is right for your home. Even if you install it yourself and take the tax credit it could still take you 15 years or. The solar attic fans all moved less than 1 000 cubic feet of air per minute cfm and they did nothing to lower the temperature inside my own attic. The attic fan just helps the air move more which adds cooler air.

Energy professionals will tell you that they do more harm than good. Whether or not an attic fan really works is a controversial subject. However the utility of attic ventilation fans is actually quite a controversial topic. Cold air is drawn in from outside through the soffit vents or roof.

Powered attic ventilators or attic fans just as they sound are designed explicitly for placing or installing in the attics. Solar attic fans work by pulling in the cold air from the soffits and pushing out the hot air that has accumulated at the top of the attic. My attic space gets as hot as blue blazes. List of the pros of solar attic fans.

This option runs on a renewable energy resource. To determine the number of cubic feet per minute needed for a power vent fan multiply the number of square feet in your attic by 0 7. 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. Danny s tests of solar attic fans showed that in florida where there s abundant solar energy yearly savings from installing two fans in a house with just over 1 000 square feet of air conditioned floor area amounted to only 460 kwh.

But they re much easier to install since no wiring is needed. The downside of attic ventilation fans. Manufacturers of attic fans as well as hvac companies will tell you otherwise. There may never be an roi.

Good insulation reduces fan effectiveness.