Purpose Of Attic Fan

An attic fan works as a ventilation unit.

Purpose of attic fan.

For example in the summer or in places where it s summer all the time like las vegas the sun beats down on the roof heating up the attic. Attic fans exhaust hot air from your attic to the outside. 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 is what it sounds like it s a fan installed on the ceiling of your attic.

Attic fan ventilation 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. How an attic fan works. How to use maintain an attic fan. It is designed to lower the temperature of an attic by exhausting air from the attic and replacing attic air.

Attic fans are typically used in warmer months when temperatures in an attic can exceed 120 f 49 c. The downside of attic ventilation fans. What function does an attic fan serve. To operate windows in the house are opened and the fan is turned on.

A common question asked is what is the purpose of an attic fan attic fans are used to increase airflow and save you money on your electrical bill. This provides much needed ventilation and is a powerful addition to your hvac system. Outside air is then drawn in. The attic fills up with hot air and pushes the air down into the house raising its temperature.

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. 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. The fan is mounted in the floor of the attic sitting above a central hallway in the home. A powered attic ventilator has a different purpose.

Good insulation reduces fan effectiveness. However the utility of attic ventilation fans is actually quite a controversial topic. Unlike a ventilation fan a whole house fan an attic mounted fan that exhausts air from a home at night is designed to cool a house that is to lower the indoor temperature. An attic fan is installed on the slanted side of your roof or on one of the gable sides of your attic.

But in homes without appropriate insulation and ventilation in the attic heat migrates. The following should provide you with more information on attic fans and why they are useful in homes. Such fans are often called whole house fans.