How Your House Attic Fan Works

Fresh air is pulled in from your soffits and or roof vent creating a draft through your attic.

How your house attic fan works.

Even though an attic exhaust fan can incrementally lower the temperature of a very hot attic using a fan does not stop the source radiant heat. Due to positive pressure air in the attic is pushed out through the vents or gables. 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. During the day any cooler air brought in by the fan will be heated up immediately by the surrounding structure.

Attic fans are installed at the roof level of your home to regulate the heat level. Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. This air is then exhausted through the fan to the outside. The whole house fan pulls air in from open windows and exhausts it through the attic and roof.

Intake vents located at the lowest part of the roof under. Most fans cannot keep up. It provides good attic ventilation in addition to whole house cooling. In such doing the attic fan will reduce the temperature in the attic space that in turn cools down the whole house.

However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the attic. Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside. How does an attic fan work. As hot air rises to the top fans push the hot air out and cool down the home by drawing in the fresh air.

How an attic fan works attic fans exhaust hot air from your attic to the outside. Whole house fans should provide houses with 3 to 6 air changes per hour varies with climate floor plan etc check with a professional to determine what is appropriate for your. For homes or buildings with a whole house fan the hot air is pulled into the attic. The attic fans are fitted with thermostats that will switch on and off the fan depending on the homeowner s preference.

Attic ventilation fans help cool air your attic by pushing out the stifling hot air from inside the attic and bringing in cool air from outside. Simultaneously negative pressure is created in the living area which helps to draw cooler air in through the windows. Some can have manual switches while others use a thermostat to turn them on and off automatically. An attic fan works by drawing in cool air to the attic space that pushes out the hot air through vents.