How Does My Attic Fan Work

Whole house fans need windows and doors open and attic fans need lots of soffit vents to suck.

How does my attic fan work.

How an attic fan works. Attic fans work on the principle of pushing out the attic s hot air and replacing it with cool air from outside. How does an attic fan work. Attic fans do cool down a house in less than an hour.

For both fans to work well they need large exhaust openings in the roof for the moving air to exit. Attic fans exhaust hot air from your attic to the outside. These fans are designed to remove excess heat from your attic which in theory is supposed to lessen the load on the air conditioning in your home. The whole house fans takes hot air from the house and moves it up into the attic and out through the attic vents.

This prevents hot air from seeping into your home and driving up the temperature in the living space which reduces the load on your air conditioner. 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. It helps to cool your home temperatures and the attic by approximately 30 degrees.

An attic fan is installed on the slanted side of your roof or on one of the gable sides of your attic. Whole house fans work on the principle of removing the hot and humid air out of the house. And washing the fan blades helps ensure that the fan works properly. Your plan will likely require a completely sealed ceiling a very thick layer of insulation radiant barriers reflective foil layers above the insulation preferably between the rafters to block the radiation and isolate your hot attic from your cool house additional ventilation openings and possibly a powered attic fan to remove warm air from the attic at the proper exchange rate.

Turn your attic fan on at the switch or turn the dial to the desired amount of time. This is why an attic fan will help ventilate the attic and bring in cool air. There are several different types of attic ventilation systems but most of them feature small vents soffit and gable which draw in cool air along with a primary fan that pushes air outside.