How To Size Solar Attic Fan

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 fan.

Use this estimator to help figure out how many attic fans you will need. Solar attic fan sizing calculator. 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. 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. Choose a fan that matches your home or attic s size for optimal performance. For a single story house this is. 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 size attic exhaust vent fans for your home. Alternatively for more precise calculations you can provide your actual floor area. How to size solar attic exhaust vent fans so we developed our solar powered attic fan sizer calculator. Cfm cubic feet per minute is a measure of the amount of air the fan moves in a minute.

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. To start enter the length width and height of your attic. Too high of a cfm and you ll be spending.

The price of solar attic fans requires a greater capital cost for homeowners compared to the traditional models. To determine the size of your attic multiply the width by the length of the attic floor in feet. The higher the cfm cubic feet per minute the more airflow a fan can produce.