How Much Temperature Difference Does Proper Attic Vents Make

Now if the ridge vent is only partial or if the attic air temperature is excessive 20 degrees higher than the outside air fans may prove beneficial.

How much temperature difference does proper attic vents make. Things have been ok low energy bills house very comfortable. Noticed one of the attic vents was not working. How many vents do you need. A 30 x 40 ft.

Told that the 2 attic power vents are the only attic ventilation i have the house does have vented soffits every other soffit cover is vented. Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge. First determine your attic area by multiplying the length by the width. Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures.

While these powered vents do effectively draw out the. Soffit vents and ridge vents are for getting moist air out of the house through the attic via a chimney effect where the soffit vents provide the intake and ridge vents provide the exhaust. Attic for example has an area of 1 200 sq. Soffit vent ridge vents do not alleviate that much heat from inside the structure because that is not what they primarily do.

Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. If your attic soars above 100 degrees and reaches the 150 mark its time to consult professionals. The cooling load for a home air conditioner depends on the difference in temperature between the inside and outside air and reduction of attic temperatures from 155 degrees to 105 degrees f will result in a significant reduction in cooling load. In of vent opening per 150 sq.

Help purchased home 8 years ago with 2 power attic vents. Then aim for about 1 sq.