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.

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. 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. Solar attic fan sizing calculator. There is a cost factor to consider with a solar attic fan.

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. Too high of a cfm and you ll be spending. How to size solar attic exhaust vent fans so we developed our solar powered attic fan sizer calculator.

Help determine optimal sizing of solar attic fans. The price of solar attic fans requires a greater capital cost for homeowners compared to the traditional models. Cfm cubic feet per minute is a measure of the amount of air the fan moves in a minute. 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.

To determine the size of your attic multiply the width by the length of the attic floor in feet. Alternatively for more precise calculations you can provide your actual floor area. The formula above gives an approximate value of the cfm needed for an attic fan. Fan size most attics are around the same square footage as your home.

For a single story house this is. The higher the cfm cubic feet per minute the more airflow a fan can produce. If you do this you don t need to enter a length or width.