Instructions / Assembly

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Whole House Fans are designed to pull in fresh, cool air from the outside through open windows in your
home. Hot air that is in the home is pulled up through the fan and into the attic, and then exhausted through
vents in the roof, under eaves, soffits or gables.
STEP 1: SELECT THE INSTALLATION SITE
1. The unit is designed to be installed on the floor of the attic between the joist that are a minimum of
16" on center. Most modern homes are built with either 16" or 24" on-center (OC) joists.
2. Select the location for your new Whole House Fan. Usually, locating the fan in a central hallway or
in the open area at the top of the stairs produces the most uniform airflow.
3. Once you have selected the installation site, check the attic immediately above the site to be sure
that there are no ducts, piping or wiring obstructing the installation area.
4.
Selected location should have unobstructed space above the floor joist of at least 22.5" W x 26"
L x 30" H.
5. The Cold Climate damper box can be mounted in the horizontal or vertical orientation. Our
recommended location is on a ceiling in the horizontal position. The Back Draft damper can only
be installed in the horizontal position.
WHERE TO LOCATE