Attic fan ventilation 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 to properly use attic exhaust fan.
During the day any cooler air brought in by the fan will be heated up immediately by the surrounding structure.
Whole house fans powered attic fans.
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.
Trace the circular body of your attic fan onto the center of the plywood.
Whole house fans work on the principle of removing the hot and humid air out of the house.
Don t include the fan s mounting bracket in the circle you draw.
Blades spin within the unit to expel air from the attic until the right temperature or moisture level is reached at which point it will automatically shut off.
Most fans cannot keep up.
These fans may be controlled by a switch or a thermostat which detects heat build up in the attic space and automatically exhausts the attic space.
It can be controlled by a thermostat or moisture monitor.
Proper soffit and or gable ventilation is needed to prevent pressure differences from building up in the attic when using solar attic fans.
Intake vents located at the lowest part of the roof under the eaves allow cool.
The warm air escapes through the attic and to the attic vents allowing the circulation of chilly air from the windows.
Check the box your attic fan came in to see if the manufacturer included a pre cut circle that s the same size as the fan s b.
The whole house fan is installed inside the attic between the living space and ceiling.
Fans and vents may be installed on the roof system that will draw the air out of the attic space and exhaust it to the exterior.
Make sure the circle isn t bigger than the actual fan or the fan won t mount properly in the plywood.
It helps to cool your home temperatures and the attic by approximately 30 degrees.
When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form.
Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
A powered exhaust vent is much like a roof mounted exhaust fan.
Bathroom exhaust fans perform an important function by removing excess moisture from your home.
How to use maintain an attic fan.