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Installing a Whole House Fan 
1. A whole house fan can cool your home without the expense of air conditioning.
2. It pulls cool outside air into the house through open windows.
3. It pushes hot stale air out through the attic and roof vents.
#1 Plan location of fan
Calculate size of fan needed for your home
Multiply square footage of home by the ceiling height to determine cubic feet
Fan CFM rating should be almost half of your cu ft
- Tape measure
- 24" 3800 CFM Direct Drive fan
- 30" 5800 CFM Direct Drive Fan
- 30" 6000 CFM Belt Fan
#2 Mark and cut the opening
Center fan over three joists in an upstairs hall
Find and mark middle joist
Use a template centered on middle joist to mark perimeter of opening
Cut drywall along perimeter
Do not cut the middle joist
- Carpenters square
- Straight edge
- Utility knife
- Drywall saw
- Jigsaw
- Pencil
#3 Run the wiring
Turn off power
Cut hole for wall switch and mount old work box
Run power wire to switch box
Run fan wire from switch box to fan location
- Wire strippers
- Old work switch box
- 14/2 or 12/2 wire
- Wire staples
- Fish tape
- Electrical tape
#4 Assemble and install fan
Attach angle brackets to fan
Prepare skirts for fan base
Center the fan over opening and screw in place
Install skirt material
- Adjustable wrench
- Screwdriver
- Drill
- Drill bits
#5 Make wiring connections
Connect motor to fan wire
Connect fan wire to switch
Connect switch to power
#6 Finishing touches
Install switch and plate cover
Mount louvers to fan opening
Turn on power and test unit
- Fan wall switch
- Switch plate
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