How To Size Solar Attic Fan

The price of solar attic fans requires a greater capital cost for homeowners compared to the traditional models.

How to size solar attic fan. Too high of a cfm and you ll be spending. The formula above gives an approximate value of the cfm needed for an attic fan. A steep roof will increase internal attic volume and a dark roof will increase energy absorption from the sun. Cfm cubic feet per minute is a measure of the amount of air the fan moves in a minute.

Help determine optimal sizing of solar attic fans. This attic ventilation calculator computes the size and number of solar powered attic fans to achieve the proper ventilation for your attic. How to size solar attic exhaust vent fans so we developed our solar powered attic fan sizer calculator. Choose a fan that matches your home or attic s size for optimal performance.

Solar attic fan sizing calculator. Fan size most attics are around the same square footage as your home. If you do this you don t need to enter a length or width. Use this estimator to help figure out how many attic fans you will need.

Alternatively for more precise calculations you can provide your actual floor area. To start enter the length width and height of your attic. To determine the size of your attic multiply the width by the length of the attic floor in feet. How to size attic exhaust vent fans for your home.

The higher the cfm cubic feet per minute the more airflow a fan can produce. 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. There is a cost factor to consider with a solar attic fan.