How Your Hous Attic Fan Works

The downside of attic ventilation fans.

How your hous attic fan works.

Many people confuse a whole house fan with an attic fan but the two accomplish different goals. 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. The whole house fan is installed inside the attic between the living space and ceiling. It helps to cool your home temperatures and the attic by approximately 30 degrees.

The warm air escapes through the attic and to the attic vents allowing the circulation of chilly air from the windows. How an attic fan works. However the utility of attic ventilation fans is actually quite a controversial topic. Good insulation reduces fan effectiveness.

For homes or buildings with a whole house fan the hot air is pulled into the attic. An attic fan is installed on the slanted side of your roof or on one of the gable sides of your attic. Attic fans exhaust hot air from your attic to the outside. However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the.

Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside. Whole house fans work on the principle of removing the hot and humid air out of the house. 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. Because whole house fans were cheaper than air conditioners and worked well they began being used in the 1950s primarily in the south.