How to Install a Duct for Venting a Kitchen Hood

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A kitchen vent hood can help remove steam, smoke and grease from your kitchen while you are cooking or baking. Some types of vents simply recirculate the air through a filter; however, other kinds of vents allow you to send the air to the outdoors through a duct. The latter devices may provide more efficient ventilation, improving the air quality of your home.

Things You'll Need

  • Work gloves
  • Goggles
  • Reciprocating saw
  • Stud finder
  • Flexible vent pipe
  • Wire nuts
  • Drill
  • Screwdriver
  • Aluminum flashing ring
  • Caulk
  • Position the kitchen hood vent at least 24 inches above the stove top. Mark the outline of the vent connection on the bottom of the cabinet above the hood. Mark the screw holes through the hood tabs on the wall and the bottom of the cabinet.

  • Put on work gloves and goggles. Then cut the outline of the vent connector through the bottom of the cabinet with a reciprocating saw.

  • Open the cabinet door. Use a stud finder to locate the studs behind the cabinet. Draw an outline of the flexible vent pipe on the back of the cabinet between the studs.

  • Cut along the outline through the back of the cabinet, the interior wall and the exterior wall with a reciprocating saw.

  • Feed a flexible duct pipe through the bottom and the back of the cabinet to the exterior wall. Connect the pipe to the vent of the hood.

  • Feed the electrical wiring of the hood through the bottom and back of the cabinet. Turn off the main power supply to your home. Connect the wiring to a nearby electrical outlet with wire nuts.

  • Drill pilot holes through each screw mark on the cabinet and wall. The pilot holes should be smaller than the wood screws you will use to attach the hood.

  • Position the hood in place. Fasten the hood to the underside of the cabinet by inserting and tightening wood screws in the pilot holes with a screwdriver.

  • Fit an aluminum flashing ring around the flexible vent pipe on the exterior of the house. Apply caulk around the end of the vent pipe and around the flashing ring to prevent moisture from damaging the exterior of the home.

Tips & Warnings

  • Cut the vent pipe hole directly through the wall rather than through the cabinet if there is no stud directly behind the vent.
  • Wear work gloves and goggles when installing the vent pipe and kitchen hood to reduce your risk of injuries.
  • Contact an electrician if you are not familiar with wiring home appliances.

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