How To Size Solar Attic Fan

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 solar attic fan.

Help determine optimal sizing of solar attic fans. Solar attic fan sizing calculator. 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. 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.

The formula above gives an approximate value of the cfm needed for an attic fan. There is a cost factor to consider with a solar attic fan. For a single story house this is. To start enter the length width and height of your attic.

The higher the cfm cubic feet per minute the more airflow a fan can produce. Choose a fan that matches your home or attic s size for optimal performance. Too high of a cfm and you ll be spending. A steep roof will increase internal attic volume and a dark roof will increase energy absorption from the sun.

Use this estimator to help figure out how many attic fans you will need. To determine the size of your attic multiply the width by the length of the attic floor in feet. If you do this you don t need to enter a length or width. How to size attic exhaust vent fans for your home.

This attic ventilation calculator computes the size and number of solar powered attic fans to achieve the proper ventilation for your attic. The price of solar attic fans requires a greater capital cost for homeowners compared to the traditional models. Fan size most attics are around the same square footage as your home.