Attic Gable Fan Sizing

How to size solar attic exhaust vent fans so we developed our solar powered attic fan sizer calculator.

Attic gable fan sizing.

During workdays would leave air conditioner off when leaving in the morning. 20 x 50 1 000 sq. For a single story house this is usually the same as the square footage of the house itself plus any attached garage area. One static vent style is the turbine vent which uses wind to power its enclosed fan all it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home.

Temp 84f at 5pm. 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. Iliving gable mount attic ventilator fan if you ve got access to your attic s gables iliving s gable mount fan is a great option for moving some air without. Example 20 wide by 50 long attic.

Temp 92 f at 5pm. After attic fan installation ac still off during day. Best bang for the buck. The attic fan kept my house cooler by 8f compared to pre fan installation days.

When buying an attic fan look at the cfm rating cfm is the amount of air that is stirred in sixty seconds. Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge. This was observed on numerous days following the installation. The formula above gives an approximate.

Help determine optimal sizing of solar attic fans. Good insulation reduces fan effectiveness. The downside of attic ventilation fans. Attic fan size calculation attic fan size cfm 0 7 x sq ft area of the attic formula 1 the size of an attic fan is calculated in terms of cfm.

How to pick the best attic fan for your gable vent. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. However the utility of attic ventilation fans is actually quite a controversial topic.