How Many Solar Attic Fans Do I Need

Solar blaster attic ventilation calculator how many vents will my house need.

How many solar attic fans do i need. Ft of attic space for example 20 x 50 to be effective. The amount of ventilation an attic needs is determined by many factors. Radiant barrier foil. These size areas requiring ventilation may only require the use of 1 x 15w green vent solar attic extraction fan.

Download solar attic fan estimator sheet pdf. 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. Many are solar powered and require no other wiring so they don t cause any additional charges on your electricity bill at all. Know the minimum number of green vent solar attic fan that you need based on the size and roof profile of your home.

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.