This is a solar panel supplying free electricity to the attic fan under the silver dome on the rear roof.
Attic fan electric vs solar.
Electric attic fans are more powerful and cheaper than solar attic fans but they consume a lot of power.
Electric powered fans use either household current or solar power to drive a fan blade.
Some electric fans run continuously but.
Moreover the wiring involved with an electric fan calls for professional installation also not free.
The fan blades spin but they don t lower the attic temperature at all.
Solar solar attic fans vs electric attic fans more hype with no hope.
What you may think as product advancement is just an ambiguous concept because what is an advancement for someone could not mean the same for another person and can be misunderstood we can t call product advancement when that means to take one step forward two steps back.
Once installed a solar fan costs nothing to run.
Solar attic fans exhaust hot air for free using the sun s rays.
Compare that to a 250 watt electric fan which will typically use 60 kilowatt hours per month when running 8 hours per day and 180 kilowatt hours per month running continuously.
Pros of solar attic fans.
Solar powered attic fans.
If you do choose to use an electric attic fan consider one with a thermostat an almost standard feature and set it for 130ºf or above.
Therefore an electric attic fan is not the best choice for the environmentally conscious.
Anytime the fan blade turns it draws air through the attic space.
Probably the biggest advantage of a solar attic fan is the energy savings over time.