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Installing a Range Hood

 

Most residential range hoods, if correctly installed, remove smoke, odor, and heat from the kitchen. To draw out cooking grease, you need a powerful commercial model.

 

For the best range hood efficiency, run the duct through the wall directly behind the range hood, in as straight a line as possible. You can run the vents of most hoods out the back or the top of the unit.

 

If a wall stud is in the way of the ductwork, you could do carpentry work to change the framing. Or purchase a hood with an extra-strong motor and run the duct around the stud.

 

Before you purchase a fan, check its "cfm" rating - which indicates the number of cubic feet of air it pulls per minute. Choose a fan with a cfm rating that is double the square footage of your kitchen.


 

WHAT YOU NEED FOR THIS JOB:

TOOLS:

MATERIALS:


 

Step 1: Mark for holes

 Step 1: Mark for holes

Remove the filter, fan, and electrical housing cover from the range hood. Use a hammer and screwdriver to remove the knockouts for the electrical cable and the duct. Hold the hood in place and mark the holes for the duct and the cable.

  

Step 2: Cut the inside and drill a locator hole

Step 2: Cut the inside and drill a locator hole

Cut holes through the drywall or plaster. Using a long bit, drill holes at each corner all the way through the outside wall.

  

Step 3: Cut the siding

Step 3: Cut the siding

Connect the dots between the holes on the outside to mark the outline of the hole. Using a reciprocating saw, saber saw with an extra-long blade, or keyhole saw, cut the outline. Remove insulation or debris that would interfere with installing the duct.

  

Step 4: Attach the duct cap

Step 4: Attach the duct cap

Push the wall cap into the wall to see if the duct is long enough to reach the range hood. If not, purchase an extension and attach it with sheet metal screws and duct tape. Apply caulk to the siding where the cap flange will rest. Push the cap into place and fasten with screws. Caulk the perimeter of the flange.

  

Step 5: Run power to the hood

Step 5: Run power to the hood

Shut off power to the circuit. Run cable from a nearby receptacle or junction box through the hole in the wall. Strip the sheathing and clamp the cable to the range hood electrical knockout. Mount the hood securely by driving screws into studs or adjacent cabinets.

  

Step 6: Connect the wires

Step 6: Connect the wires, restore power and test

Splice the white wire to the white fixture lead, black wire to black lead, and the ground wire to the green lead. Fold the wires into place and replace the electrical cover. Reattach the fan and filter. Restore power and test

  

Closer Look

 Masonary Kit   Duct Cap

 

Venting through a masonry wall

 

Use a long masonry bit to drill the locator holes. Draw the outline carefully, double-checking that you can slip in the vent with room to spare. Drill holes about every inch along the outline;then use a hammer and cold chisel to chip between the holes. To attach the duct cap, drill holes and drive masonry screws. Older homes may have double-thick brick walls—a real challenge!