How Long Should You Run An Attic Fan

Some attic fans are designed with thermostats and turn on automatically when the air reaches a certain temperature. Setting your hvac fan to on when you set your fan to on you re telling it to keep running 24 hours a day 7 days a week regardless of the heating or cooling setting. Calculate the appropriate size of a whole house fan needed to properly ventilate your home.

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You should not operate in the winter to retain heat collected in the attic.

How long should you run an attic fan.

They can cool your home in less than an hour. They can cool your home in less than an hour. A typical fan can t do both the work of an attic and the whole house fan but a whole house fan does both. Multiply the number of square feet of the floor area you want to cool by the room height from floor to.

The windows remain closed until the next evening to. If your attic fan seems to be running constantly it would be a good idea to bring in a professional to check it out and make sure it s still working properly. Simpler fan models generally have on off switches or dials that allow you to run. Keep in mind that our systems will provide you with a whole house ventilation fan that can be used to exhaust cooking odor stale indoor air etc.

With electricity rates in central kentucky it will cost the average homeowner less than 3 per month to run the fan 24 hours a day. Attic ventilation will usually need to be increased to exhaust the fan s air outdoors. We always recommend the use of a timer. If you have a newer energy star rated furnace it will have a variable speed motor that is designed to run all the time.

Generally speaking they can cool down a house in less than an hour. Weather is also a factor. There are a few positives to this feature. The net free area of a vent takes into account the resistance offered by its louvers and insect screens.

You should attach a timer on the switch and run for 20 minutes three or more time per day during the warmer months. If the switch on temperature is set too low you can bet that the fan will run all summer long and create a noisy disturbance. Part 2 on average you should run the fan for 4 5 hours to ensure the attic is cooled. The attic is what keeps the home hot.

Once the house has cooled the fan can be turned off and the windows closed. Pros to running fan on air conditioner continuously. You ll need 2 to 4 times the normal area of attic vents or about one square foot of net free area for every 750 cubic feet per minute of fan capacity. If you have a builder s grade or older system then it may cost you as much as 10 12 a month.