What should attic fan be set at?

When it comes to an attic fan's temperature setting, it's best to adjust it to anywhere from 90 to 110 degrees Fahrenheit. It's impossible to state a single number because your attic can effortlessly soar above 95 degrees (on average).

When should my attic fan be running?

Attic fans work best at night when the outside temperature cools and that air is drawn into your warm home to cool it off.

What temperature should I turn off attic fan?

To test an attic fan, you just have to adjust the temperature dial to above the current attic temperature. If the attic is around 90-degrees, then just as you hit 90-degrees, the attic fan should turn on. And then adjusting the dial to below 90-degrees, the attic fan should turn off.

What should the humidity setting be for an attic fan?

Your attic fan runs during winter regardless of the temperature to bring in dry outside air to replace damp attic air and prevent mold from starting in your attic. Your Jet Fan Attic Fan Humidistat should be set to 70 -75% relative humidity. Fan runs less with higher setting.

What is the ideal attic temperature?

The ideal attic temperature should be no less than 60 degrees in the winter and no more than 10 to 20 degrees above the outdoor temperature in the summer. If your attic temperature climbs above 130 degrees, you may start running into issues with your energy bill, as well as the integrity of your roof.

How To Adjust Attic Fan Thermostat Temperature

Do attic fans really help?

Based on our industry experience, the answer is, yes. Attic fans do really work. They will help to circulate air in your attic and ventilate the space so that it stays closer to the outside temperature.

Should I turn off my attic fan in the winter?

But did you know that an attic fan can also play an important role in your attic during winter? It's true. An attic fan in winter can help prevent ice dams, reduce moisture in your attic during winter months, and prevent mold and mildew buildup due to moisture problems in the attic.

Is it OK to run an attic fan all night?

It is ok to run the fan for a few hours at a time, but then you should let it cool off before firing it up again. However, and as stated above, running your fan longer than it takes to replace the attic air is a waste of electricity.

What temperature and humidity should an attic fan be set at?

Your attic fan should be properly installed and set to 100 degrees Fahrenheit. Humidistats can also be attached to your fan to better control humidity.

How hot is an attic on a 100 degree day?

Thanks to the radiant heat affect, attic temperatures on a 100-degree day can reach 170 degrees or more.

Does a hot attic make house hot?

The temperature in your attic can reach 150 degrees on a hot summer day, a situation that if left unchecked can drive up cooling costs by as much as 40 percent.

Do attic fans use a lot of electricity?

On average, an attic fan uses less than 300 watts of electricity. If it were to run constantly, it would use up to about 180 kWh per month. Unfortunately, this cost can add up.

What happens if your attic gets too hot?

An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate. And it can cause your air conditioner to work harder than it needs to and send your energy bills soaring with the temperature.

Are attic fans a fire hazard?

"Most attic fans are put up there and forgotten," says Kenneth Kent, deputy marshal of the Arlington County Fire Department. "They're not inspected for years, and when they malfunction, they can start a fire." How common is it that ventilation fans overheat? It depends on how they're manufactured.

How long do attic fans last?

Typically, attic fans have a lifespan of up to 15 years as long as they are properly maintained. This usually involves having the attic fan professionally serviced by an HVAC technician who will clean the fan shutters, lubricate the oil ports, and wash the fan blades as well as inspect the unit for any repairs needed.

Can you run attic fan with windows closed?

No. A whole-house fan pulls in air from outside, through a window, then pushes it out your attic vents. Never operate the fan without opening windows, or if the air outside is colder or hotter than you want the inside of your house to be.

What temperature should my attic fan be set at in the winter?

When it comes to an attic fan's temperature setting, it's best to adjust it to anywhere from 90 to 110 degrees Fahrenheit.

How do attic fans work in winter?

Attic ventilation fans offer mechanical ventilation, using a fan to draw in cool, outside air and force out warm, moist air. Air is drawn in through the attic fan and air is expelled through the roof vent system to keep your attic cooler and drier, preventing ice and moisture issues throughout the winter.

Do attic fans prevent mold?

Good air circulation and ventilation can help prevent the growth of mold, though, which is important since household mold can lead to numerous health problems and is also costly to remove. You can purchase the solar attic fan of your choice and hire a local roofer to install it.

What is proper attic ventilation?

Ventilation should be placed in a way that allows air to enter from along the eaves and exit through the roof's peak. Common conventions call for one square foot of attic ventilation per 300 square feet of ceiling space. However, some authorities recommend one square foot of attic ventilation per 150 square feet.

Do attic fans work to cool your house?

Typical attics will reach 120-150 degrees during the summer. An attic fan can help lower that temperature by up to 50 degrees, which translates into up to a 5 degree lower temperature inside your home. Not only will it feel cooler inside, your AC will last longer as it will not need to cycle as much.

What are the pros and cons of an attic fan?

How can I reduce the heat in my attic?

How hot does an attic get on a 90 degree day?

More often than not, attic temperatures will be in excess of 125 degrees on a 90 degree day. This will overwork your air conditioning equipment, run up your utility bill and shorten the life of your roof. Ridge vents help – excessive heat can escape through ridge vents.

Should attic windows be open?

Cars and attics can reach 140 degrees F and higher, and all that heat doesn't do either one of them any good. Just as you can crack open a car window to prevent such excessive heat in your car, you can use ventilation in the attic to reduce the heat gain.