Attic In Ranch

The bigger the house for whole house fans or attic space for attic venting fans the higher the cfm figure you need.

Attic in ranch.

With a dedicated entrance sturdy flooring and plenty of natural light you can use your ranch attic for any number of things. With hundreds of square feet of ductwork surface area in the attic and a δt of 75 f the air coming out of the vents in your home will be significantly higher than 55 f. But before you cut any holes plan the locations of the attic vents. Motor power given in amps or horsepower isn t a major factor so long as it generates the required cubic feet per minute.

It s a classic post war ranch house built in the 50s to meet the needs of the soldiers returning from ww2 and the needs of their growing families. Some fans are twin speed so two cfm ratings are given. An attic can get up to about 130 f in the summer and the conditioned air entering the ducts is about 55 f or so. Photos 1 6 show how it s done.

I live in a small square house. Gaps in the attic or between the lower floors and the attic will let heated or cooled air escape to the great unconditioned outdoors making any insulation you add essentially useless. With attics that extend the entire length of the home. Mark the roof venting locations from the attic where you can see the rafters and avoid placing roofing vents over them.

Adding attic vents is a simple matter of cutting holes and installing vents.