Proper Sizing Of Attic Fan

Next multiply the square feet of attic space by 0 7 to get the minimum number of cubic feet of air per.

Proper sizing of attic fan.

To determine the size of your attic multiply the width by the length of the attic floor in feet. The whole house fan is installed inside the attic between the living space and ceiling. In terms of sizing your ceiling fan for your bedroom there are two common size options for bedrooms. It ll fill the attic with hot air which will stop it from pulling more air into the.

If you have a regular sized bedroom of 144 to 225 square feet then a medium ceiling fan with a blade span of 44 to 50 inches will be a great fit. How to size attic exhaust vent fans for your home attic size. For instance if your house has an overall floor area of 1 500 square. The warm air escapes through the attic and to the attic vents allowing the circulation of chilly air from the windows.

Divide the result by 60 minutes to find the cubic feet per minute or cfm that your fan must move for whole house ventilation. Whole house fans work on the principle of removing the hot and humid air out of the house. You will want to check your fan to ensure that its cfm rating is anywhere between 1 600 and 4 500. It helps to cool your home temperatures and the attic by approximately 30 degrees.

By dispelling hot air from your attic an attic fan can reduce the temperatures of your upper level rooms by 10 degrees extend the life of your roof shingles and cut air conditioning expenses by up to 30 percent. Without an attic fan the temperature in your attic can climb to a searing 150 degrees. Measure the length and width of the attic floor space to be ventilated. This is a quick rundown of the different types of attic fans their most common features and.

If your whole house fan doesn t have the proper ventilation it s not going to work very well either.