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.

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. Cfm cubic feet per minute is a measure of the amount of air the fan moves in a minute. 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. For a single story house this is. Although you can recoup the initial expense through your energy cost savings over time there is a barrier to entry with this product that may be too much for some consumers. Alternatively for more precise calculations you can provide your actual floor area.

There is a cost factor to consider with a solar attic fan. How to size solar attic exhaust vent fans so we developed our solar powered attic fan sizer calculator. The higher the cfm cubic feet per minute the more airflow a fan can produce. 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. Use this estimator to help figure out how many attic fans you will need. Choose a fan that matches your home or attic s size for optimal performance. Too high of a cfm and you ll be spending.

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