Fan Blowing In Attic

A whole house fan is usually installed on the attic floor near the center of your house.

Fan blowing in attic.

Attic insulation that is less than r 19. It s a big fan and basically the idea is that when it starts to get a little sticky you turn the fan on and it just you open up a few windows around the house and it pulls a nice breeze throughout the house. Much of that heat then conducts downward and finds its way into the house. Trying to solve the heat gain problem in your attic by using a fan is like lying out at the beach with a fan blowing over you and thinking you re not going to get a sunburn.

An attic floor that is thoroughly air sealed. Using a fan to blow hot air out of the attic doesn t address the radiant heat flow from the roof to the attic floor. Bountiful eave soffit ventilation space. Cooler outdoor air enters through open windows lowering the indoor temperature.

Attic ventilation fans could be effective if your home has. Putting warm summer room air into the attic will not cause condensation because the attic ventilation should vent the area. Hvac equipment in the attic that is well insulated and sealed. Condensation is caused when warm moist air reaches its dew point.

That air gets pulled up into the attic. If possible i d peek into the attic to make sure the vents are clear and working before cutting the hole and installing the vent. 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.