How to Vent a Range Hood on an Interior Wall (5 Easy Steps)

How to Vent a Range Hood on an Interior Wall (5 Easy Steps)

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What materials do you need to vent your range hood on the interior wall?

Here’s a checklist of tools and supplies to ensure

Here’s a checklist of tools and supplies to ensure seamless and successful venting:

  • Manual on how to vent a range hood on an interior wall
  • Level
  • Measuring tape
  • Pencil
  • Utility knife
  • Adjustable wrench
  • Screwdriver
  • Self-tapping screws
  • Aluminum or duct tape
  • An angle grinder, PVC trim, and silicone (for creating a mounting plate)
  • Ductwork
  • Wall cap
  • Hole saw
  • Needle nose pliers
  • Electric drill
  • Clear exterior caulk
  • Safety gloves and goggles

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Cut a hole 1-2 inches larger than your ductwork where you’ll run the duct from your hood

Your hood will be running for years to come, so you want it to comfortably fit in your kitchen.

One to two inches gives you space to thread the ductwork through the hole so you can attach it to the hood with ease.

Vent Hood Vitals: Important Questions to Ask

How much does it cost?

Prices vary, depending on size, functionality, and style. A basic 30-inch hood can be had for under $100, while a custom copper 60-inch ceiling-mount chimney-style one can go for more than $20,000. Most mid-priced, high-style hoods can be found for around $1,000.

DIY or hire a pro?

Swapping in a similar unit is a simple job that requires basic electrical work to connect the wiring. To install a new vent, you’ll need to cut holes in the walls, ceiling, or roof and run ductwork. This could be a project for an experienced DIYer or might best be left to a contractor.

Where to buy?

You can order a variety of hoods online or find them at appliance retailers, showrooms, restaurant suppliers, and home centers.

What about maintenance?

Experts recommend cleaning the filters after every 30 hours of use—typically every month or two—to keep a hood running smoothly.

#2. Vent To Lower Level

Another option for homeowners is to install a vent to the exterior by going down a level and then horizontally to the outside.

The only problem with this strategy is that the vent must go in-between the interior wall joists, so the range hood (and oven) need to be exactly centered. If your oven and hood isn’t centered correctly, then they will have to be moved so that the center of the hood lines up with the center joist space.

One great thing about this venting strategy is that you can even install a remote blower in the basement. This means that your range hood will be significantly quieter because the blower fan isn’t at the hood, it is in the basement near the exterior wall.

With a remote venting application, it also frees up the kitchen cabinet space above the hood because there isn’t a blower.

Read Also: How To Paint An Old Range Hood?

Vent Hood Filter

Photo by Gary Ombler/Getty

Here’s how the three most common grease-trapping methods work

•Metal mesh

The hood’s blower pulls smoke and vapors through several layers of aluminum or stainless-steel mesh, catching the grease. These removable filters should be cleaned regularly—most can be popped into the dishwasher—to prevent clogs that can slow airflow.

•Baffles

More common on high-cfm, commercial-style units, these slat-style metal filters force the smoke to change direction several times, causing grease droplets to separate from the air and drip down into a tray that can be taken out for cleaning.

•Centrifugal traps

In place of a filter, centrifugal force within the blower liquefies grease, which is collected in a tray or a cup that’s removable for cleaning. With no filters to slow the airflow, these hoods require fewer cfm than those with baffles or mesh to do the same job, often with less noise.

Key points to help you do the job well

For a safe and hassle-free installation, keep in mind the following tips:

  • Know the needed parameters to help you select the right range hood for your needs. It is essential to know the cubic feet per minute (CFM) of the unit you want. You need to measure the space in your kitchen to ensure its suitability. The rule of thumb is to multiply the kitchen area by two to find the right CFM.
  • Consider the area above the gas stand. The range hood should have an 8th cm radius around the oven space and gas area.
  • Disconnect electrical connections before installing the unit. Switch off all connected power to the kitchen area to prevent any electrical hazards.
  • Keep your hands dry when handling any electrical appliances. 
  • Ensure that the available outlet you will use to plug the range hood vent has sufficient power requirements. You can check the power sufficiency of the cables and outlet on the labels.
  • Read and review the user manual and browse a YouTube tutorial that can guide you in installing the range hood properly.
  • Do not void the warranty of the products you purchase so you can return or refund the money if it has some factory defects. 
  • Separate and strip all wires.
  • Use wire nuts to connect the electrical wires.
  • Make sure that all connections are done nicely and connected to the prongs accordingly. The white wire, which is the neutral wire, should be connected to the biggest prong, the black wire that is your hot is connected to the smaller prong, and the green wire, which is the ground, is connected to the long, thin prong. 
  • Avoid plastic venting and use a galvanized steel, painted steel, or metal to ensure durability and quality. 
  • Do not use over 40 feet of ductwork if you want the unwanted smoke, odor, and grease to come out of the duct quickly and easily.
  • Insulating the ductwork helps prevent leakages or condensation.
  • Seal the joints with HVAC tape.
  • Avoid using many elbows to ensure good air circulation and that the smoke goes out quickly to the outside. A minimum of four 90-degrees elbows is enough in the ducting. Making at least 23 inches of straight vents is recommended before putting an elbow.

How to Install a Backdraft Damper

A backdraft damper, like an inline blower, is installed inside your ductwork. The damper is a vent that opens when you use your hood and closes when you turn it off. Most importantly, it prevents back-drafting, which is the backward movement of outside air back inside your home.

Ideally, you want all the greasy air to make it to the outside and a backdraft damper helps with that. It also keeps debris out, acting as a safety net if your wall or roof cap doesn’t catch all the debris.

Backdraft dampers come in many different sizes. For range hood, the most common sizes are 8” and 10”. They are less bulky than inline blowers. Most backdraft dampers are rectangular, so if you have circular ductwork make sure you find a damper that is circular.

Install your backdraft damper close to the termination of your duct – within a few feet. Once you’ve found a place for it, cut through your ductwork and attach the damper. Most dampers have screw holes on the top, bottom, and sides so you can firmly attach them to your ductwork.

Hopefully you found this guide on how to vent your hood through a wall helpful. If you have any questions about your installation, feel free to call Proline at (877) 901-5530. Or, check out more of our installation articles below.

About Me

Hey, it is Jennifer here.

Hey, it is Jennifer here.

2 years ago, the blog was more like a diary, a place where I could preserve the recipes and photos and share them with a few friends and family members.

2 years later, I love it and have quit my job as a programmer to run this full-time

Final Thoughts

When a homeowner is faced with an interior wall range hood, the question arises as to whether they can vent to the exterior. And the answer is almost always yes.The most common way to vent to the exterior is by going directly to the exterior wall through the ceiling cavity or going through the top of the kitchen cabinets.Another possibility is to go down through the interior wall (in-between the joists) and then to the exterior wall in the basement or lower level. And if there is an attic above the kitchen, you can always go straight up through the attic and install the vent on the roof or gable wall.

Read Also: What Are The Best Rated Range Hood Inserts?

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