How Many Solar Attic Fans Do I Need

According to the home ventilating institute hvi powered attic ventilators need to move a minimum of 700 cubic feet per minute cfm for 1 000 sq.

How many solar attic fans do i need. Solar blaster attic ventilation calculator how many vents will my house need. Know the minimum number of green vent solar attic fan that you need based on the size and roof profile of your home. These size areas requiring ventilation may only require the use of 1 x 15w green vent solar attic extraction fan. The amount of ventilation an attic needs is determined by many factors.

The charts below should be used as a general guideline for how many solar attic fans are needed for residential installations based on square footage and roof pitch. Ft of attic space for example 20 x 50 to be effective. Calculate how many solar attic fans you need to achieve proper ventilation with this free helpful attic fan size calculator from energy efficient solutions. Radiant barrier foil.

Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation for every 300 square feet of attic floor space evenly split between intake and exhaust.