How To Size Solar Attic Fan

The formula above gives an approximate value of the cfm needed for an attic fan.

How to size solar attic fan.

Alternatively for more precise calculations you can provide your actual floor area. Too high of a cfm and you ll be spending. Choose a fan that matches your home or attic s size for optimal performance. Use this estimator to help figure out how many attic fans you will need.

How to size solar attic exhaust vent fans so we developed our solar powered attic fan sizer calculator. Whole house fans work on the principle of removing the hot and humid air out of the house. Solar attic fan sizing calculator. Attic fan size calculator this attic ventilation calculator computes the size and number of solar powered attic fans to achieve the proper ventilation for your attic.

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. To start enter the length width and height of your attic. Ft of your home by 0 7 will give you an approximate minimum cubic feet of air a fan should be able to move per minute. A steep roof will increase internal attic volume and a dark roof will increase energy absorption from the sun.

Help determine optimal sizing of solar attic fans. It helps to cool your home temperatures and the attic by approximately 30 degrees. Cfm cubic feet per minute is a measure of the amount of air the fan moves in a minute. Vent fan size next multiply the square feet of attic space by 0 7 to get the minimum number of cubic feet of air per minute that the fan should be rated to move.

The warm air escapes through the attic and to the attic vents allowing the circulation of chilly air from the windows. If you do this you don t need to enter a length or width. Fan size most attics are around the same square footage as your home.