Do You Really Need An Attic Fan

Attic fans can create a negative pressure condition in your home causing vented appliances to backdraft.

Do you really need an attic fan.

For both fans to work well they need large exhaust openings in the roof for the moving air to exit. The point of having an attic fan is to lessen the load on your ac system saving you money. Attic ventilation fans help cool air your attic by pushing out the stifling hot air from inside the attic and bringing in cool air from outside. Whole house fans need windows and doors open and attic fans need lots of soffit vents to suck.

A ridge vent is an opening along the ridge of your roof. This fan moves 1 000 or more cubic feet of air per minute creating low pressure in your attic. To reduce that expense some homeowners buy an electric or solar attic ventilator. Electric attic fans however often increase energy consumption and cancel out any savings unless the attic is not insulated at all.

This backdraft can bring dangerous and toxic fumes into your home like carbon monoxide an odorless and deadly gas. An attic fan may be needed in your home sometimes. The fan will help move the hot air from your attic helping out the existing insulation infrastructure to create a comfortable. Because what happens is attic fans are so strong that they actually reach down into the conditioned space of your house and they do that by using the wall cavities and where the outlets and pipes come through the walls as places where they draw air from the inside of your house it s that air conditioned air and it ll pull it right up into the attic and exhaust it outside.

When should you use an attic fan. Having small insulation spaces in the attic if the attic space is less than r 19 you will need an attic fan. This prevents hot air from seeping into your home and driving up the temperature in the living space which reduces the load on your air conditioner.