How Often Should Attic Fan Last

Attic fans are designed and installed to switch on via a thermometer when the temperature in a house reaches a certain point.

How often should attic fan last.

With an attic fan that switches on appropriately when the attic reaches a specific degree somewhere between 105 120 degrees fahrenheit it. Most fans cannot keep up. During the day any cooler air brought in by the fan will be heated up immediately by the surrounding structure. Attic temperatures and roof lifetimes standard asphalt shingle roofs is northern vermont where martin holladay lives last 30 or more years while roofs in south texas last about 15 to 18 years.

Static vents often protrude from roofline thanks to special covers intended to keep all precipitation rain sleet hail and snow from entering the attic. Standard insulation starts to degrade and start peeling from walls after about 15 years. Insulation should also be replaced in some cases sooner than 15 years if it is no longer doing its job properly. Even though an attic exhaust fan can incrementally lower the temperature of a very hot attic using a fan does not stop the source radiant heat.

Because of the attic s location it is always a hotter part of the house. If you have an older home chances are the attic insulation is the same insulation that was installed when the house was built. An attic fan is installed on the slanted side of your roof or on one of the gable sides of your attic. Mechanical attic ventilation fans may be powered in a variety of.

I think that the difference is due to the hotter attic temperatures in the south which increase the shingle temperatures. However the utility of attic ventilation fans is actually quite a controversial topic. Attic fans are typically used in warmer months when temperatures in an attic can exceed 120 f 49 c. How an attic fan works.

Attic fans exhaust hot air from your attic to the outside. A fan may be installed in an attic for the different purpose of cooling a whole house venting hot air out via the attic. These fans are designed to remove excess heat from your attic which in theory is supposed to lessen the load on the air conditioning in your home. Homeowners can choose from a variety.

Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool. An attic fan doesn t require annual maintenance. Good insulation reduces fan effectiveness.