Solar Attic Fans Do They Work

Here is some information so you can decide whether an attic fan is right for your home.

Solar attic fans do they work.

Solar attic fans how they work. The attic fan just helps the air move more which adds cooler air. Powered attic ventilators or attic fans just as they sound are designed explicitly for placing or installing in the attics. Cold air is at the bottom and warm air is at the top.

List of the pros of solar attic fans. I saw an advertisement for a solar powered attic fan and that seems like a great. The most significant benefit of solar attic fans is that they operate using renewable energy from the sun instead of being hooked up to your electrical grid. But after seeing my solar powered attic fan work i have a long list of cons solar powered attic fan checklist.

Cold air is drawn in from outside through the soffit vents or roof. My attic space gets as hot as blue blazes. Depending on what your utility charges that s about 40 per year. This is basically how air naturally moves.

Whether or not an attic fan really works is a controversial subject. This option runs on a renewable energy resource. There may never be an roi. But they re much easier to install since no wiring is needed.

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. 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. Manufacturers of attic fans as well as hvac companies will tell you otherwise. However the utility of attic ventilation fans is actually quite a controversial topic.

Even if you install it yourself and take the tax credit it could still take you 15 years or. Energy professionals will tell you that they do more harm than good. 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. Fans slow down or stop when most needed.

Ad the infrared rays from the sun are powerful. 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. Fans don t move lots of air. The downside of attic ventilation fans.

Solar powered attic vent fans usually don t move as many cubic feet of air per minute cfm as hardwired fans.