Attic Fans 1400 Square Feet

Attic area in square feet.

Attic fans 1400 square feet.

Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. 2200 square foot home x 8 inch ceiling height 17600 cubic feet divide the cubic feet measurement by the cfm rating assigned to the fan. Net free area in square inches. Attic x 0 7 700 cfm minimum fan rating.

Attic vent fans are commonly rated from 800 to 1 600 cfm making one fans suitable for attics of up to around 2 200 square feet. Add an additional 20 cfm x 1 20 if you have a steep roof and 15 cfm x 1 15 for a dark roof. Some manufacturers tell you their fan works in spaces up to 1 000 square feet or from 2 000 to 3 000 square feet for example. Choose one of the following products to meet the recommended intake nfva of 528 square inches.

If you need 6 000 cfm of air flow through your house divide 6 000 by 750 to get a minimum 8 square feet of. Ft of living space. During the summer an attic can be 40 to 50 hotter than the outside temperature which in turn heats up the house very quickly. It s another useful guide but you can t always be sure how the company arrived at that figure.

The same home would need a 4000 cfm rated fan to achieve the 2 0 cfm per sq. It features a sturdy galvanized housing and a 3 1 amp motor that provides ventilation for up to 1 600 square feet of attic space. It also comes with a built in thermostat. With an attic fan you can cool the attic to the same temperature as it is outside greatly reducing the house from heating as quickly.

However a constant flow of air is required to remove the heat that is radiating from your rooms walls ceiling and attic. Attic fans are either gable or roof mounted. Ventilation area in square feet. Quietcool attic fans work almost everywhere almost anytime.

Types of attic fans. Allows cool dry air to enter the attic. The following product options will allow you to achieve an intake nfva of 528 square inches. Cubic feet per minute is a more definite number.

Ft home would need a 3000 cfm rated fan to achieve the 1 5 cfm per sq.