Do I Need A Solar Attic Fan

To reduce that expense some homeowners buy an electric or solar attic ventilator.

Do i need a solar attic fan. You will probably need two solar attic fans to get the results you want. 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. This fan moves 1 000 or more cubic feet of air per minute creating low pressure in your attic. The amount of solar attic fans a home needs will ultimately depend on many factors.

Electric attic fans however often increase energy consumption and cancel out any savings unless the attic is not insulated at all. This pressure balance improvement and the cooling provided by the air flow are most significant in the case of a leaky. Because what happens is attic fans are so strong that they actually reach down into the conditioned space of your house and they do that by using the wall cavities and where the outlets and pipes come through the walls as places where they draw air from the inside of your house it. All you need to know about attic ventilation.

Vaulted ceilings obstructions and the amount of existing ventilation from soffit vents ridge vents and gable vents should all be considered. However the utility of attic ventilation fans is actually quite a controversial topic. Ok i would definitely not recommend an attic fan. Attic fans exhaust hot air from your attic to the outside.

Good insulation reduces fan effectiveness. Solar powered attic vent fans usually don t move as many cubic feet of air per minute cfm as hardwired fans. Powered exhaust vents feature an electric or solar powered fan to create an effect similar to that of a turbine view example on amazon. An attic fan is installed on the slanted side of your roof or on one of the gable sides of your attic.

How an attic fan works. Exhausting moderate amounts of attic air as solar fans do can counteract this reducing infiltration my calculations show it to be about right for a vented attic but either do the calculations or measure the pressures. How many solar attic fans do i need. 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. The downside of attic ventilation fans. 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. 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.