How Many Attic Fans Should I Have

Dwight barnett is a certified master inspector with the american.

How many attic fans should i have.

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. 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. 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. At least one window should be open before the fan is operated.

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

However the utility of attic ventilation fans is actually quite a controversial topic. This fan moves 1 000 or more cubic feet of air per minute creating low pressure in your attic. You place the fans on the gable walls of your attic. Electric attic fans however often increase energy consumption and cancel out any savings unless the attic is not insulated at all.

Keith june 18 2015 at 8 30 am. Good insulation reduces fan effectiveness. I have a 1 800 sq ft attic how many turtle vents wll i need i also have 1 attic fan is this sufficient. The attic is a space that many people tend to neglect.

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. 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. 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. 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.

This is the only ventilation on my. Powered attic ventilators should provide at least 10 air changes per hour. The result is a cooler attic space with plenty of air exchange.