How To Install A Duct Range Hood In A Downstairs Kitchen? –

Project Overview

Working Time: 1 hour if there’s no ductwork to install. Up to 4 hours, including ductwork installation. Total Time: 1 to 4 hours Skill Level: Intermediate Estimated Cost: $100-400+, depending on the hood selected

Will Liquid Nails adhesive hold up a range hood instead of screws?

No, range hoods must be secured to studs with screws for the best support. Small hoods weigh around 30 pounds and larger hoods can get up to 100+ pounds. Liquid Nails adhesive is not strong enough to handle the weight of a range hood.


Step 5. Adding Insulation

Before you completely closing the wall, you may want to stuff some insulation in between the vent and the wall cavity.

You can either stuff some loose fiberglass insulation, or you can insert some expanding foam in a can such as GreatStuff.

Read Also: How To Pick The CFM For Your Range Hood?

Basics of Installing a Range Hood

Range hoods are placed directly over a countertop-based cooktop or a stove. Range hoods have a large downward-facing hood to collect the smoke or steam and force it out of the house with a multi-speed fan through an aluminum filter. Ductwork typically runs out of the side of the house—above the level of the range hood—or directly upward through the roof.

Why would I ever want to install an unvented range hood?

Sometimes, installing a vented range hood isn’t possible because of the layout of the kitchen, especially if it’s in a condo or apartment. When a vented hood is mounted under the cabinet or on a wall, the duct has to run through or behind the cabinets to an outer wall. For a ceiling-mounted or island range hood, the duct must run above the ceiling.

If you don’t already have the duct in your kitchen, it can be expensive (or sometimes impossible) to install one. Also, the location of the duct dictates where your range will be placed in the room—a duct run that’s too long or twisty is less effective. (You may have to add a booster fan in these cases.)

A ductless range hood can be mounted anywhere, which saves money. It’s also more practical if you’re renting. And it uses less energy, since the fan doesn’t need to blow as hard.

 Above: A wall-mounted range hood in Kitchen of th
Above: A wall-mounted range hood in Kitchen of the Week: A Greek Architect’s Ode to Minimalism.

Step 2. Cut A Small Access Hole

Before you fully cut the vent hole, it’s a good idea to cut a small access hole of just an inch or two somewhere in the vent location. With a small access hole, you can verify that you won’t be cutting through any gas piping, water piping, or electrical piping before you proceed with a hole saw (or hammer through brick).

You may also discover that there is a wood stud or some structural member that is in the way.

If you see any electrical wiring, hopefully you can easily push it out of the way or reroute it. But if there is any gas piping or water piping, you may need to find a qualified contractor to properly move the pipe.

For a structural issue, you will probably either have to contact a qualified contractor or you will need to reroute the vent.

Be very careful before modifying a structural exterior wall. And if you have to reroute the vent pipe with an elbow, try to keep duct runs as short as possible to maximize air flow.

Read Also: How To Install Under Cabinet Range Hoods?

Steps for Installing a Range Vent Hood

  1. Use a 6-inch-diameter hole saw to cut a hole through the interior wall surface, directly above the range. Collect the dust with wet/dry vacuum while cutting the hole.
  2. If the hole saw can’t cut through the interior wall in one pass, stop cutting, remove the plaster from the hole, and continue drilling.
  3. If necessary, use a multi-tool to cut wood lath from the 6-inch hole.
  4. Replace the hole saw with a ¼-inch-diameter bit and drill through the backside of the wall sheathing to the outdoors.
  5. From outside, use the 6-inch hole saw to cut through the siding and wall sheathing.
  6. Make a mounting plate by cutting 6-inch-diameter hole through a piece of PVC trim.
  7. Hold the PVC plate against the house siding, and trace around it with a pencil.
  8. Use an angle grinder to cut the siding along the pencil lines.
  9. Apply bead of silicone adhesive around the hole in wall. Press the PVC mounting plate tight to the wall, and secure with screws.
  10. Use duct tape to attach a 6-inch-diameter elbow to the vent cap.
  11. From outside, slide the vent cap into the hole and secure it to the mounting plate with self-tapping screws.
  12. From inside the kitchen, slide an elbow through hole and onto vent cap elbow. Secure with duct tape.
  13. Screw the vent-hood mounting brackets to kitchen wall; be sure to drive the screws into wall studs.
  14. Slide the vent hood into the brackets and secure with screws driven into wall studs.
  15. Make the electrical connections to provide power to the vent hood’s light and exhaust fan.
  16. Install the vertical cover to conceal the exposed ductwork.

Final Thoughts

Deciding to install a range hood in your home is a great choice that can help keep the kitchen air clean, while also filtering grease from the air before it can settle on your counters, cupboards, or table. Experienced DIYers can install ductless range hoods on their own to save on the hourly cost of a professional installer. However, this isn’t a good idea if you need to install a new ducted range hood system.

Keep in mind that learning how to install a range hood doesn’t necessarily mean that you have the experience and technical training to properly install a series of interconnected vents to the exterior of the home without damaging the masonry or creating potential entrances for unwanted pests. Consider the details and steps of this project carefully before deciding to take it on or hire a pro to complete the job.

Is there a cost difference between vented and unvented range hoods?

Prices for range hoods vary anywhere from around $80 to more than $2,000, depending on the size, manufacturer, and design. Many range hoods on the market can be used vented or unvented, so you’ll pay the same except for the added filter or conversion kit.

 Above: An under-cabinet range hood in Kitchen of
Above: An under-cabinet range hood in Kitchen of the Week: A Small Kitchen with Big Personality for Comedian Seth Meyers.

Does a range hood have to be vented outside?

It is ideal to vent your range hood to the outside. Ducted range hoods are much more efficient, powerful, and durable than ductless range hoods. But, it is not required. You can also purchase a ductless hood, which pulls air through charcoal filters and recirculates it back into your kitchen. Sometimes, this type of hood is ideal if you don’t have room for ductwork. It depends on your kitchen setup, but always consider a ducted hood over a ductless hood.

When to Call a Professional

Contact a building contractor if you need to add ductwork through the side of your house or through the roof and do not feel comfortable with this task. If you are unfamiliar with installing electrical wiring under the National Electrical Code (NEC), be sure to call a qualified electrician.