Soffit Attic Fan

Master flow 900 cfm black resin hybrid solar electric powered solar attic fan with adjustable solar panels model prhybrid2 view the master flow roof vents 269 54.

Soffit attic fan.

The whole house fan is installed inside the attic between the living space and ceiling. With soffit vents in place there will be some balance of house air versus outside air drawn in once the pressure in the attic is lowered by the fan. Save 115 52 30 limit 15 per order. Photos 1 6 show how it s done.

The warm air escapes through the attic and to the attic vents allowing the circulation of chilly air from the windows. It helps to cool your home temperatures and the attic by approximately 30 degrees. 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. These vents allow outside air to enter the attic at the lowest point of the roof along the underside of the eave.

If your home is fitted solely with small gable end vents or a ventilator high in the roof you might want to consider adding soffit vents to increase airflow. Save 115 52 30 269 54. 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. But before you cut any holes plan the locations of the attic vents.

Adding attic vents is a simple matter of cutting holes and installing vents. Mark the roof venting locations from the attic where you can see the rafters and avoid placing roofing vents over them. Whole house fans work on the principle of removing the hot and humid air out of the house. An attic s intake vents are most commonly installed directly in the soffit either as individual vents spaced every few feet or as one continuous perforated soffit running the entire length of.

When passive methods aren t sufficient an electric fan installed at a soffit vent draws additional outside air into the attic to augment the chimney effect. The precise balance will depend on the balance of resistance of the soffit vent versus through ceiling paths and the through ceiling path also has resistance on entry to the house from. Your soffit ventilation actually needs to be considerably more than 336 net square inches to supply a 700 cfm fan system or the fan is going to pull the air it needs through unsealed holes and gaps in the attic floor from the conditioned living space.