Proper Sizing Of Attic Fan

For instance if your house has an overall floor area of 1 500 square.

Proper sizing of attic fan. Measure the length and width of the attic floor space to be ventilated. How to size attic exhaust vent fans for your home attic size. It ll fill the attic with hot air which will stop it from pulling more air into the. Whole house fans work on the principle of removing the hot and humid air out of the house.

If your whole house fan doesn t have the proper ventilation it s not going to work very well either. In terms of sizing your ceiling fan for your bedroom there are two common size options for bedrooms. The warm air escapes through the attic and to the attic vents allowing the circulation of chilly air from the windows. The whole house fan is installed inside the attic between the living space and ceiling.

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. You will want to check your fan to ensure that its cfm rating is anywhere between 1 600 and 4 500. Without an attic fan the temperature in your attic can climb to a searing 150 degrees. This attic ventilation calculator computes the size and number of solar powered attic fans to achieve the proper ventilation for your attic.

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. Divide the result by 60 minutes to find the cubic feet per minute or cfm that your fan must move for whole house ventilation. It helps to cool your home temperatures and the attic by approximately 30 degrees. To determine the size of your attic multiply the width by the length of the attic floor in feet.

This is a quick rundown of the different types of attic fans their most common features and.