Attic Fan Meaning

Intake vents located at the lowest part of the roof under the eaves allow cool.

Attic fan meaning.

An attic fan is meant to reduce the temperature in the attic by sucking out hot air. This american designed fan is designed to reduce attic temperatures and remove destructive moisture thus making your home more comfortable and reducing the load on your hvac system and lowering your electricity bills. 2003 2012 princeton university farlex inc. An attic fan can be gable mounted or roof mounted.

A whole house fan pulls air out of a building and forces it into the attic space or in the case of homes without attics through an opening in the roof or an outside wall. Additional vents are required to draw in fresh air as the hot air is exhausted. As hot air rises to the top fans push the hot air out and cool down the home by drawing in the fresh air. Most attic fans are controlled by thermostats that turn them on or off according to the temperature in the attic.

It allows hot air to escape in the summer and can also help reduce the chances of ice damage in the winter by allowing a natural flow of outdoor air to ventilate the attic. This causes a positive pressure differential in the attic forcing air out through the gable and or soffit vents while at the same time producing a negative pressure differential inside the living areas which draws air in through open windows. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. A thermostat is used to automatically turn the fan off and on while sometimes a manual switch is used.

Attic fans are installed at the roof level of your home to regulate the heat level. If there are not enough soffit gable or ridge vents a powerful attic exhaust fan can pull the air from your home through the ceiling if it is not perfectly sealed off. Occasionally these fans start making annoying noises. While a simple vent is sometimes used to allow for the passive flow of air it s also possible to add a powered attic fan commonly called an attic power ventilator.

As the attic cools the smart fan will automatically cycle down to lower speeds the lowest being 1 000 cfm which only uses 15 watts of energy resulting in a cheaper air conditioning bill and cooler home temperature temperatures can drop as much as 50 degrees. Strong attic fans can actually back draft furnaces or water heaters by pulling combustion gases out of their burnersand into the home. A powered attic ventilator or attic fan is a ventilation fan which regulates the heat level of a building s attic by exhausting hot air. They can help you save a lot of money on your energy bills as you may not have to use air conditioning if the weather isn t too hot.