Fan Blowing In Attic

An attic floor that is thoroughly air sealed.

Fan blowing in attic.

Attic insulation that is less than r 19. 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. 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. Condensation is caused when warm moist air reaches its dew point.

Hvac equipment in the attic that is well insulated and sealed. Cooler outdoor air enters through open windows lowering the indoor temperature. A whole house fan is usually installed on the attic floor near the center of your house. 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.

Lee sam jun 9 17 at 0 03. Open your windows before you turn on the fan. In the late evening or early morning the fan is turned on to exhaust hot air from the house. Much of that heat then conducts downward and finds its way into the house.

Putting warm summer room air into the attic will not cause condensation because the attic ventilation should vent the area. Attic ventilation fans could be effective if your home has. That air gets pulled up into the attic. 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.