Do Attic Exhaust Fans Work

Attic fans exhaust hot air from your attic to the outside.

Do attic exhaust fans work.

Do not use mechanical means electric attic fans. 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. 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. An attic exhaust fan can sometimes work magic in providing a cool environment in the attic that lets your living spaces become comfortable.

In such doing the attic fan will reduce the temperature in the attic space that in turn cools down the whole house. Strong attic fans can actually back draft furnaces or water heaters by pulling combustion gases out of their burnersand into the home. 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. The attic fans are fitted with thermostats that will switch on and off the fan depending on the homeowner s preference.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Well what s been found is that if you turn the attic fan on in the summertime that it depressurizes the attic but it doesn t stop there. Intake vents located at the lowest part of the roof under the eaves allow cool. Fresh air is pulled in from your soffits and or roof vent creating a draft through your attic.

Venting a homes attic is a very important best building practices will say 50 at the ridge and 50 at the soffits unobstructed. An attic fan works by drawing in cool air to the attic space that pushes out the hot air through 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. As a certified licensed home inspector it is not correct to say too much ventilation is bad for an attic unless rain moisture is getting in.

This air is then exhausted through the fan to the outside. Sometime during the sunny days hot air is drawn in from the outside that is further heated up in the attic and this might cause the temperature in your living area to rise. As hot air rises to the top fans push the hot air out and cool down the home by drawing in the fresh air. Ideally this will lower the high temperatures that have built up in your attic.