Leave Attic Fan Open Over Winter

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

Leave attic fan open over winter.

Small attic vents located below the roof peaks provide sufficient ventilation to let the moisture created by heat rising into the. It can do both. One last thought attic ventilation is not there to get rid of heat it is there to get rid of excess moisture accumulating from the home. Best ventilation is open soffit venting to a open vented ridge vent.

It even rained and the sill got wet but not the floor. Instead it will merely cause a build up of moisture and heat that can cause other more troubling conditions in your home come spring. Insulation at least r 38 or more is there for heating and cooling. If you have an attic fan and used it while the access door to the attic in the garage was open that access door amply supplied the cfm intake needed by the fan.

In the late evening or early morning the fan is turned on to exhaust hot air from the house. Opening your automatic garage door will let cool air and a draft in. As you know cold air settles and hot air rises. Keep them open bottom line.

Do not cover your attic vents for the winter. Shutting the vents in your attic during the winter isn t going to help you hang on to too much heat where you actually want it in the living areas of your home. Ice dams attic fans even with good attic insulation heated air from living spaces can build up in your attic. Make sure the space between the top of insulation and the roof deck s underside is clear at the eaves.

Opening your attic access panel will draw that air into the attic and help to push the hot air up there and out through the roof vents assuming you have proper attic ventilation. My home has a whole house fan installed in the upstairs hallway ceiling when its cool at night that thing can suck the heat out of the house in record time. Cooler outdoor air enters through open windows lowering the indoor temperature. Ridge vent must me installed per the manufactures instructions.

But that is seldom the case resulting in conditioned air being sucked from the living space to make up the difference. During cold winter months the attic vent fan is not necessary. Doing so in attempts to keep cold air out disrupts attic ventilation leading to moisture issues. An attic fan in winter can help prevent ice dams reduce moisture in your attic during winter months and prevent mold and mildew buildup due to moisture problems in the attic.

This allows air to move through the rafter space for good ventilation.