Installing a Range Hood

Intro

A range hood removes air over a cooking surface and may have lights too. Usually it attaches to the underside of a cabinet. The bottom of the hood should be about 24 inches above the cooktop.

Range hoods are rated for the amount of air they can move in CFM (cubic feet per minute). Ducts more than a few feet long or that make several turns to reach the outside reduce the flow. Consider purchasing a ductless unit, which filters the air and sends it back into the kitchen.

To replace a range hood, shut off power and remove the existing hood. Take the hood with you when you buy a new one to make sure the ductwork lines up.

Checklist

Time
About 6 hours to cut holes, run cable, and install ductwork and a range hood (not including cutting a pathway for the cable and patching walls)

Tools
Voltage tester, drill, long bit, drywall saw, jigsaw, hammer, fish tape, long-nose pliers, screwdriver, strippers, tin snips, lineman's pliers

Skills
Stripping, splicing, and connecting wires to terminals; running cable through walls; cutting holes into walls

Prep
Find power source and make sure the range hood does not overload the circuit. Spread a drop cloth on the floor below.

Materials
Range hood, cable and clamps, ducts, duct tape, sheet metal screws, wall cap, caulk, wire nuts, electrician's tape

Step 1

Remove the range hood electrical cover and punch out the knockouts for the duct and for the electrical connection. Hold the hood in position and mark the wall for two holes. Cut a hole in the wall for the duct.

Step 2

If necessary drill a hole for the cable. With a long bit, drill locator holes through to the outside of the house.

Step 3

Connect the locator holes to mark the cutout. Make sure the hole is the right size for your duct. Cut through siding using a jigsaw, reciprocating saw, or circular saw.

Step 4

Shut off power to the circuit. Connect cable to a power source and run it up through the cable hole. You may use the cutout for the duct to help access and handle the cable, but make sure the cable is not in the way of the duct.

Step 5

Measure from the outside to the inside wall and cut a piece of duct to fit. Attach the duct to the end cap. Apply a bead of caulk around the hole on the outside and slide the duct and cap through the wall. Attach the cap with screws.

Step 6

Stuff insulation into the cavity around the duct. Strip and clamp cable to the range hood.

Step 7

Position the range hood so the duct fits snugly over the hood's damper unit. Attach the hood with screws driven up into the cabinet above and/or into the wall studs.

Step 8

Connect the grounds, including the pigtail, to the hood housing. Splice the hood's lead wires to the house wires. Reattach the electrical cover.


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