Owner's Manual

Mounting the Fan
Step 2 – Sizing Requirements
See sizing chart to assure that you select the correct number
of fans for your situation. Some attics have walled off or
chambered areas that will require additional fans to properly
vent the space.
If you have any questions or concerns please
call our customer service specialists at:
1-866-446-0966
south or southwest
mid-day summer sun
Step 3 – Positioning of the Solar Fan
The solar fan should be positioned to face south or southwest for optimum performance
and should be positioned on an area of the roof that is not shaded or otherwise blocked
from the sun for extended periods throughout the day. The solar fan should be installed
18 – 24 inches from the top of the roof peak and as close to the mid-point of your house
as possible. In the case that 2 or more fans are getting installed you should separate the
fans by at least 15 feet to maximize circulation. (fig. 4)
Step 4 – Marking the Hole
From inside the attic, measure down from the roof peak approximately 18 to 24 inches and
center this spot between two rafters. Drill a screw through this mark into the plywood and
roof shingle so it will be easily located from on top of the roof.
Included in the box is a template for cutting out the hole. It is printed on the cardboard
protecting the base of the fan. Punch out the template and use scissors or a utility knife to
smooth out any rough edges. From on top of the roof, locate the screw and place the
cardboard template over the top of the screw aligning it in the center hole of the template.
Using a pen or marker, trace a circle around the outer edge of the template,
resulting in a circle with a 14” diameter.
(fig. 5)
fig. 4
fig. 5
Step 5 – Cutting the Hole
Using a power drill equipped with a ½ - 1” drill bit, drill a pilot hole anywhere along the
inside of the circle. Insert the saw blade into the pilot hole and follow the circle pattern to
cut the hole into the roof. (fig. 6)
fig. 6
Do not cut through any roofing rafters or framing members! Only cut and remove the roof
sheeting and shingles. Prior to cutting the hole, make sure you do not have any wires or
waterlines in the area that you are cutting. Before completely cutting out the circle, try to
secure the removed material so it does not fall into the attic space.
5”
Shingle
Felt Paper
Step 6 – Lifting the Shingles
The nails located 5” above and to the side of the hole will need to be removed for the solar
fan flashing to slip between the felt paper and the shingles – (fig. 7) You should use a pry
bar or reciprocating saw to loosen or cut any nails and/or staples.
Do not attempt to force the unit into place. If it does not slide easily into place, a nail is most
likely obstructing the flashing. In some cases the builder may have used large washers to
install the felt paper. In this case lift up on the flashing as you are sliding it under the shingles.
fig. 7
1 Fan
1 Fan
2 Fans
2 Fans
2 Fans
1 Fan
2 Fans
3 Fans
4 Fans
4 Fans
2 Fans
3 Fans
4 Fans
5 Fans
6 Fans
How Many Fans Do I Need?
Low Slope
Up to 4/12
Medium Slope
5/12 - 8/12
High Slope
9/12 - 12/12
Attic Size
total sq. ft.
800 sq.ft.
1200 sq.ft.
1600 sq.ft.
2000 sq.ft.
2400 sq.ft.
24”
roof peak