How Many Attic Fans Should I Have

The downside of attic ventilation fans.

How many attic fans should i have.

To reduce that expense some homeowners buy an electric or solar attic ventilator. An electric attic fan or whole house fan is a valuable alternative to air conditioning if you don t want the expense of running your air conditioning unit all summer or don t have the money to. You place the fans on the gable walls of your attic. Powered attic ventilators should provide at least 10 air changes per hour.

Multiplying the total square footage of the attic by 0 7 will provide the rate required. Large fans can put the house under significant negative pressure. I can not find anything on vent fans used with triangle gable vents my home is 100 years old and the vents are in mint condition and are covered in window screening. With square foot living space at a premium many homeowners turn to their attics for a little extra room when the attic becomes part of the home to be heated and.

At least one window should be open before the fan is operated. Since you don t have a reason to go up there very often you probably don t find yourself giving a lot of thought to the fan in your attic. This is the only ventilation on my. Good insulation reduces fan effectiveness.

Also the devices have benefits like protecting your roof from damage which might be brought about by the heat and humid moving around the attic thus damaging the insulations and. 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. Electric attic fans however often increase energy consumption and cancel out any savings unless the attic is not insulated at all. I have a 1 800 sq ft attic how many turtle vents wll i need i also have 1 attic fan is this sufficient.

Powered attic ventilator fans designed to cool your attic by drawing the hot and humid air out of the attic and bring in a flow of chilly air from outside. Keith june 18 2015 at 8 30 am. Dwight barnett is a certified master inspector with the american. The result is a cooler attic space with plenty of air exchange.

Attic fans perform this ventilation by pushing hot air out into the environment while also pulling fresh cool air into the attic. Powered attic ventilators pavs. If the home already has a fan roof vents or gable vents these should be blocked and sealed from the attic side of the home.