Do You Really Need An Attic Fan

To reduce that expense some homeowners buy an electric or solar attic ventilator.

Do you really need an attic fan.

Attic fans can create a negative pressure condition in your home causing vented appliances to backdraft. For both fans to work well they need large exhaust openings in the roof for the moving air to exit. 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. 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.

This backdraft can bring dangerous and toxic fumes into your home like carbon monoxide an odorless and deadly gas. The point of having an attic fan is to lessen the load on your ac system saving you money. Having small insulation spaces in the attic if the attic space is less than r 19 you will need an attic fan. Electric attic fans however often increase energy consumption and cancel out any savings unless the attic is not insulated at all.

Studies have shown if your attic is properly ventilated with a ridge vent and your attic is well insulated you wouldn t need an attic fan. Whole house fans need windows and doors open and attic fans need lots of soffit vents to suck. This fan moves 1 000 or more cubic feet of air per minute creating low pressure in your attic. The fan will help move the hot air from your attic helping out the existing insulation infrastructure to create a comfortable.

Yes an attic fan is definitely strong enough to do that because there are hundreds of holes in the structure of the house that allow it to do that. Conditions that may make it necessary for you to have an attic fan include. When should you use an attic fan.