Attic Fans Really Work

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Attic fans really work.

Whether or not an attic fan really works is a controversial subject. Energy professionals will tell you that they do more harm than good. During the different seasons the attic fan will help you in dealing with moisture and heat. The downside of attic ventilation fans.

Instead of installing a fan just make sure your attic is well ventilated. Why attic fans don t work well and what to do instead. Manufacturers of attic fans as well as hvac companies will tell you otherwise. To determine the number of cubic feet per minute needed for a power vent fan multiply the number of square feet in your attic by 0 7.

Solar powered attic vent fans usually don t move as many cubic feet of air per minute cfm as hardwired fans. Turn your fan off and monitor the temperature in your attic up unitl 2pm or something then. Good insulation reduces fan effectiveness. The attic fan can work with the modern air conditioning unit but only if you are in a closed room.

A very hot problem last week we had some warm weather for the first t. But they re much easier to install since no wiring is needed. The safety and effectiveness of an attic fan is a subject that is hotly debated but line powered products usually cost more to operate than they can produce in savings during the summer. Attic fans are not recommended if you have central air conditioning because when you turn the fan on in the summer it depressurizes the attic but also reaches down into your house and starts drawing off air conditioned air effectively driving up your cooling costs.

They also create zones of negative pressure that could pull the ac cooled air into the attic. Some of the daytime temperature rise comes from internal loads refrigerator television lights and some from solar gain through windows and attic insulation won t reduce those heat sources. 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. Find out whether it is economical to run an attic fan.

However the utility of attic ventilation fans is actually quite a controversial topic. Do attic fans really work. With the summer season upon us now is a good time to review an uncomfortable topic. I m not experienced enough with your climate to know whether a whole house fan would work but i suspect that it would work better than attic insulation.

Here is some information so you can decide whether an attic fan is. By tipsformyhome june 28 2019. If you really can t believe it set up some experiments of your own. 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.

You have to apply insulation during some season for it to be effective. People who really think attic fans work. Solar power is safer to use with an attic fan. I know it seems intuitively that these things would work great but they just don t.