Do Solar Attic Fans Work On Cloudy Days

They assisted a lot in creating a comfortable environment at home.

Do solar attic fans work on cloudy days. The more direct sunlight the fan receives the faster the fan moves air. On cloudy days you don t need to run an attic fan and with solar attic fans you only access the energy you need on the days you need it most the hottest sunniest days of the year with no added expense. That means you re paying for the equipment without really getting the benefits that you need to improve your storage space. Solar powered attic vent fans usually don t move as many cubic feet of air per minute cfm as hardwired fans.

For the attic fans to work at peak efficiency they need to be on a south facing roof slope if you live in the northern hemisphere. Depending on what your utility charges that s about 40 per year. An attic fan is installed on the slanted side of your roof or on one of the gable sides of your attic. On cloudy days the fan will receive less sunlight and will move more slowly on rainy days the fan will not move at all.

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. Attic fans exhaust hot air from your attic to the outside. 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. But they re much easier to install since no wiring is needed.

Drifting clouds can prevent the fan s operation. 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. You might find that some solar attic fans only push around the hot and humid air in your space instead of exhausting it. How an attic fan works.

These fans are also maintenance free and easy to install and maintain. Although there are a lot of factors to consider before installing it can function well. Our solar attic fans are designed to work the hardest when you need them the most. Superior quality multi crystalline solar cell modules provide the power for all attics and more solar attic fans.

Solar attic fans require direct sunlight to operate. If a cloud blocks the sunlight the fans slow or stop. Even if you install it yourself and take the tax credit it could still take you 15 years or.