Attic Fan Intake Or Exhaust

A powered exhaust vent is much like a roof mounted exhaust fan.

Attic fan intake or exhaust.

Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool. Master flow egv5 gable mount attic ventilators are master flow egv5 gable mount attic ventilators are a great choice for exhaust ventilation. The downside of attic ventilation fans. Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge.

A powered attic ventilator has a different purpose. As previously mentioned both intake and exhaust vents are needed for the ventilation system to be effective. Gable vents are a type of louvered vent that can act as an intake or exhaust vent depending on which way the wind is blowing. However the utility of attic ventilation fans is actually quite a controversial topic.

Blocked by attic insulation because insulation baffles weren t used. More than 50 of the attic fans i see do not work and have current still live to the motor. 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. They can quickly remove a larger volume of hot and or humid air from your attic compared to static ventilation which helps save money on your heating and cooling.

One of the leading causes for fires. Good insulation reduces fan effectiveness. It can be controlled by a thermostat or moisture monitor. Do not use mechanical means electric attic fans.

Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. Unlike a ventilation fan a whole house fan an attic mounted fan that exhausts air from a home at night is designed to cool a house that is to lower the indoor temperature. You can t have one without the other. Additionally any excess intake will become exhaust on the leeward side of the house because the intake vents on the windward side of the house will have.

Lack of intake or exhaust vents. Intake vents located at the lowest part of the roof under the eaves allow cool. Ridge vent must me installed per the manufactures instructions. They are typically easier to install and won t detract from the appearance of your roof.

Soffit vents should be checked to confirm that they aren t. Best ventilation is open soffit venting to a open vented ridge vent. If the attic ventilation system cannot be balanced 50 intake 50 exhaust it s better to have more intake than exhaust because it s been our experience most houses lack proper intake.