Attic Fans Do They Help

Attic fans exhaust hot air from your attic to the outside.

Attic fans do they help.

So much more than just ventilation. 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. This air is then exhausted through the fan to the outside. A powered attic ventilator has a different purpose.

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. It is designed to lower the temperature of an attic by exhausting air from the attic and replacing attic air with outdoor air. The problem with this design as argued by energy professionals is that attic fans also pull the conditioned air from your home into the attic. Much of that heat then conducts downward and finds its way into the house.

Note that they do not push air in the house but draw fresh air into the attic enabling your house to cool almost instantly. This allows it to improve your hvac efficiency and protect your roof shingles plus the structural integrity of your attic. Mechanical fans this is where an attic fan can help. Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

A mechanical fan working in an attic space equipped with adequate ventilation openings can move hot air out and increase the flow of air through the attic. Attic fans are critical because they are designed to cool off the attic providing relief to the unbearable temperatures of your home. Intake vents located at the lowest part of the roof under. The most significant benefit of solar attic fans is that they operate using renewable energy from the sun instead of being hooked up to your electrical grid.

If you want your home air conditioner to cool you. Trying to solve the heat gain problem in your attic by using a fan is like lying out at the beach with a fan blowing over you and thinking you re not going to get a sunburn. How an attic fan works. Using a fan to blow hot air out of the attic doesn t address the radiant heat flow from the roof to the attic floor.

The attic fans just pull air through a hot attic space in an effort to reduce the infrared heat gain you feel through the ceiling of your home. Ideally this will lower the high temperatures that have built up in your attic. Attic fans perform best when your attic is properly sealed and insulated to block the entry of heat and moist air.