Table of Contents
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).
What is an acceptable attic temperature?
Hot air becomes trapped between the attic insulation and the roof without proper ventilation. Ideally, your attic should not exceed 130 degrees Fahrenheit during the summer. Problems related to attics hotter than 130 degrees: It will make it harder to cool your home in the summer.
What should attic fan be set at in winter?
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.
How do I get hot air out of my attic?
Install electric ventilators and attic fans, which remove hot air from an attic. They have thermostats that turn the fan on at a recommended preset temperature of 100-110 degrees. Alternatively, install passive vents such as gable, soffit and ridge vents, which are openings in the roof that allow hot air to escape.
How long should an attic fan run?
Generally speaking, an attic fan should run as long as it takes to replace all the attic air with outside air. Usually, this takes roughly 15 minutes. However, you can calculate a much more accurate time by dividing the strength of your fan by the volume of your attic space.
When should I turn on my attic fan?
Attic fans work best at night when the outside temperature cools and that air is drawn into your warm home to cool it off.
How hot is an attic 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 I leave attic fan on in winter?
During the winter, the heat is constantly running inside your house. Since heat rises, it can get trapped in your attic, and that hot air is moist. To combat moisture buildup, a fan in the attic is essential.
Can I put a regular fan in my attic?
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. Attics can reach extremely high temperatures in hot, summer months and gather an excessive amount of moisture in the winter. Attic fans will help fight these problems.
Can you put too much insulation in attic?
It’s possible to over-insulate an attic as too much will cause moisture buildup and eventually result in mold. Eventually, adding more insulation leads to diminishing returns in trapping heat as well.
How hot does an attic get in summer?
In the summer, attics can reach temperatures of 140 degrees and higher. This type of heat build-up can be dangerous because it can damage your roof and any items you have stored in the attic. Excessive heat can also be dangerous if you have things electrical wiring running through your attic.
When should I run my attic fan in the summer?
During the summer the fan should operate anytime the attic temperature is above the comfort level desired for the indoor living quarters. For example, if the air conditioning thermostat is set to 74 degrees, the attic fan might be set to 75 degrees.
Do attic fans use a lot of electricity?
Attic fans are incredibly efficient. They use a fraction of the electricity your air conditioning system uses. They also decrease your need for air conditioning, which lowers your monthly utility bills.
Is it okay to leave an attic fan on all night?
Only use your fan when the outdoor air is cooler than your indoor air. Make sure your A/C is off when you run the fan to avoid wasting energy. We recommend running the whole house fan all night. The goal is to cool your entire house down, not just the air.
Do attic fans save you money?
One of the best ways to save money on cooling your house is to install a whole house fan along with an attic fan. These fans keep you from needing to run an A/C unit at all hours of the day, which will save a lot of money on your electric bill.
Why is my attic fan so loud?
Attic fans are great machines that can bring some refreshment by blowing out hot air. Even though we all enjoy attic fans, they are mechanical devices and sometimes they can be quite noisy and annoying. In most of the cases, the noise will appear due to some parts of attic fan getting old or by being worn out.
How hot can an attic get on a 100 degree day?
Thanks to the radiant heat affect, attic temperatures on a 100-degree day can reach 170 degrees or more.
How do I know if my attic is too hot?
Hang an outdoor thermometer in your attic, making sure its range reaches at least 130 degrees Fahrenheit. Hang pencil and paper next to the thermometer and record the outdoor and attic temperatures for several hot days. * Note excessive heat.
How can I keep my attic cool in the summer?
How to Keep the Attic Cool in Summer Why This Matters. Attic Ventilation fans. Install Passive Vents to Keep the Attic Cool. Attic Insulation. Adding Insulation. Reflective Metal Roofing Helps Keep the Attic Cool. Light Colored Shingles Make for a Cooler Home. Install Radiant Barriers.
