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Installing a Range Hood - Wall Vent |
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Materials List
 | Range hood |
 | Metal ducting |
 | Duct tape |
 | Duct strap (plumbers tape) |
 | 1" to 2" galvanized screws and/or screw anchors |
 | Caulking |
 | Wall cap |
 | Electrical cable (NM) |
 | Cable clamps |
 | Wire nuts |
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Tools List (click item to shop)
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1. |
Remove the fan from your hood, as well as the filter, light housing, and electrical housing. Find the knockout that corresponds to the direction your electrical cable will come from and punch it out. Cover the top duct hole with the provided cover so that only rear duct hole will be open. |
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2. |
Hold the hood up where it will be mounted and outline with a pencil the location for the knockout and duct. |
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3. |
Drill holes in each corner of your outline and then use a drywall saw to cut from hole to hole. Cut the hole for the electrical cable by using a drill bit the same size as the outline for the knockout and then pull your cable through it. |
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To cut a hole in the outside of the house, drill the four corners of the hole from the inside out so that the outside hole will line up with the inside hole. Next, from the outside, cut from hole to hole using a reciprocating saw. |
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If the exterior has a masonry finish like stucco or brick, use a masonry bit to drill the four corners from the inside and then from the outside drill a close series of holes between the corners. Next, use a masonry chisel to chip away between the holes until the center falls away. |
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6. |
Back in the kitchen, install a cable clamp in the knockout hole on the hood. Next, with a helper, hold the hood in its final position. Feed the electrical cable through the clamp and then screw the hood in position below the cabinet. |
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7. |
The next step is to install your ducting. Attach the ducting to the wall cap (an exterior vent cap for ducting) and then install both by screwing the wall cap in place on the exterior wall (for a masonry wall use screw anchors). It may be necessary to trim the ducting to length with your metal shears but be careful not to cut too much. Also, make sure that the damper in the hood moves freely and is not obstructed by a poor fit with the ducting. |
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8. |
Apply a generous bead of exterior silicone caulk around the wall cap to seal against moisture. |
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9. |
Reinstall the fan unit, light cover, and filter. Connect the black wires together, the white wires together, and the green or copper wires together or to a ground screw. Cover the wire connections with wire nuts, and then cover all the wiring with the electrical housing cover. Finally, turn the power back on and see how it all works. |
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