Do Solar Attic Fans Work

If a cloud blocks the sunlight the fans slow or stop.

Do solar attic fans work. This is basically how air naturally moves. A solar powered attic fan provides constant steady air flow throughout your attic. Cold air is at the bottom and warm air is at the top. It makes perfect sense to make the sun cool your attic space since it is the source of the problem in the first place.

A solar attic fan ideally delivers up to 400 cfm of venting power per 1000 sq. 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. The attic fan just helps the air move more which adds cooler air circulation. 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.

Once the solar powered attic fan is up on the roof the sun works its magic to power the fan. Solar attic fans can be installed in just 15 minutes. You re a pretty clever guy to get the sun to do double duty. 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.

Good insulation reduces fan effectiveness. How an attic fan works. An attic fan is installed on the slanted side of your roof or on one of the gable sides of your attic. Solar attic fans in.

These fans are designed to remove excess heat from your attic which in theory is supposed to lessen the load on the air conditioning in your home. Depending on what your utility charges that s about 40 per year. You will probably need two solar attic fans to get the results you want. As result stale warm air is vented out giving more room for fresh cool air also known as air exchange your attic should never be hotter than 10 25 above the outside air temperature in the summer time.

Because solar attic fans operate with a lower power output they are unable to move as much air as some of the other options that are available. Even if you install it yourself and take the tax credit it could still take you 15 years or. It was almost magical to see the solar attic fan work. How does a solar powered attic fan work.

Attic fans exhaust hot air from your attic to the outside. Of attic and expels hot air from the attic quickly replacing it with cooler air from outside. That means you will need to double up your investment in this area. 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.

Free fast bids. However the utility of attic ventilation fans is actually quite a controversial topic. Solar powered attic vent fans usually don t move as many cubic feet of air per minute cfm as hardwired fans.