Attic Fan Cfm Size

Fans are sold on the basis of diameter or the cfm of air they move.

Attic fan cfm size.

Then click on calculate. Too high of a cfm and you ll be. Attic x 0 7 700 cfm minimum fan rating. Enter the length and width of your attic or ceiling crawl space.

Attic fan size calculation. Choose a fan that matches your home or attic s size for optimal performance. Understanding whole house fan cfm. Simultaneously cool fresh air will be pulled through the open windows and circulated through every room effectively replacing all of the air in your home and minimizing your dependence on air conditioning.

Add an additional 20 cfm x 1 20 if you have a steep roof and 15 cfm x 1 15 for a dark roof. Remington solar 25 watt 1420 cfm gray solar powered attic fan model sf25 gr 339 00 339 00. Remington solar 1280 cfm powder coated galvanized steel hybrid solar electric powered attic fan model sf20 blk 315 00. Then enter the height at the highest point.

Whole house fans come in a variety of sizes determined by the amount of air they circulate or whole house fan cfm. 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. For open blade fans see our ceiling fan calculator. Ventilation rate of 10 air changes per hour.

For heating and air conditioning airflow or for other exhaust fan situations see our airflow calculator. By sizing and implementing a whole house fan you can pull the warm stale air from your entire home into the attic where it s vented outside. 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. For example a typical 36 inch diameter whole house fan will move 6 900 cfm of air.

Cubic feet per minute or cfm is the amount of cubic feet of air per minute the fan moves. The formula above gives an approximate value of the cfm needed for an attic fan. Having an understanding of this makes choosing the correct fan size for your home an easier process. Set your store to see local availability add to cart.

Cfm cubic feet per minute is a measure of the amount of air the fan moves in a minute. The higher the cfm cubic feet per minute the more airflow a fan can produce.