Why Do Attic Fans Fail So Quickly

It s 90 in my clothes closet in hottest part of summer.

Why do attic fans fail so quickly.

You may have such a switch you need to look at the incoming power cable to see if it goes through a temperature switch. Sometimes the fan comes wired with a timer you can set it to run during the day and turn off at night. By appreciating and correcting all these problems a good whole house fan will run very quietly 46 db to 52 decibels on high speed and have a lifespan of something like 40 to over 60 years. When a fan blade becomes unbalanced the fan starts to shake and the vibration jiggles the filament in the bulb and shortens its life.

I have mine set so when the attic gets over 90 degrees f the fan turns on but you can set it to any temperature. Attics usually have a passive ventilation system in which outside air comes in through the soffit eave vents at the bottom warms up in the attic and escapes through the can or ridge vents at the top because hot air rises. The recent hail storm and replacement of everything that is roof related has many of us having to deal with attic fans and wondering what it is exactly that these fans do. Fans can cause increased loss of conditioned air.

Without spending a fortune i was just going to replace the ventilation fan in the attic. The most common cause of attic mold by far is blocked or insufficient ventilation of the attic space. Do you have a recommendation for fans. Often being situated on.

Over time the bearings in the fan can become gummed up from dirt and oil. Improperly ventilated attics can have issues with mold and mildew as well as ice buildup and leaks in winter and can increase home cooling costs in summer. A good example of this is a ceiling fan with a light fixture. Another cause of bulbs burning out is excessive fixture vibration.

If the attic fan isn t turning on it could be an electrical issue a problem with the thermostat or the motor of the fan that s not working. Attic turbines should spin as heat rises. So it gets hot up there even here not far from the ocean in l a. There are three main culprits for a slowing fan.

The spinning turbines pull warm air from the attic more quickly. Your attic fan may not be turning on because of an electrical problem like a tripped circuit breaker a blown fuse or a bad connection. The heating svc company wanted to put one in but seemed like a lot of money. As it turns out because the insulation slows heat from moving down into the living space homes with well insulated attics don t see a significant reduction in their cooling load when they add attic ventilation fans.

Attic turbines are an important component of attic ventilation.