Attic Fan Size

Attic fan size calculation 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.

Attic fan size.

An attic fan is an electric exhaust fan that mounts in your home s attic. 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. 1150 cfm galvanized steel electric powered attic fan with adjustable thermostat model gf 14 429 00 429 00. It helps to cool your home temperatures and the attic by approximately 30 degrees.

20 x 50 1 000 sq. Whole house fans work on the principle of removing the hot and humid air out of the house. The warm air escapes through the attic and to the attic vents allowing the circulation of chilly air from the windows. This attic ventilation calculator computes the size and number of solar powered attic fans to achieve the proper ventilation for your attic.

Example 20 wide by 50 long attic. The formula above gives an approximate. Minimum opening size the 2012 international residential code requires an attic access opening for attics with an area greater than 30 square feet and a vertical height in excess of 30 inches. For a single story house this is usually the same as the square footage of the house itself plus any attached garage area.

Attic fan size calculator. Set your store to see local availability add to cart. An attic fan works by exchanging the hot air in your attic space for fresh air pulled through the vents. This will help to avoid premature damage to the shingles or mold building up in moist hot.

Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge. Master flow 1450 cfm silver electric powered gable mount electric attic fan model egv5smt view the master flow gable vents 118 00 118 00. The inexpensive fans can help reduce heating and cooling costs by evacuating superheated or cold air from your home s.