How To Size Solar Attic Fan

If you do this you don t need to enter a length or width.

How to size solar attic fan.

Alternatively for more precise calculations you can provide your actual floor area. Help determine optimal sizing of solar attic fans. 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. 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.

The formula above gives an approximate value of the cfm needed for an attic fan. Too high of a cfm and you ll be spending. The higher the cfm cubic feet per minute the more airflow a fan can produce. 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.

For a single story house this is. A steep roof will increase internal attic volume and a dark roof will increase energy absorption from the sun. There is a cost factor to consider with a solar attic fan. 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. To start enter the length width and height of your attic. How to size attic exhaust vent fans for your home. Solar attic fan sizing calculator.

Fan size most attics are around the same square footage as your home. How to size solar attic exhaust vent fans so we developed our solar powered attic fan sizer calculator. To determine the size of your attic multiply the width by the length of the attic floor in feet.