How to Install a Range Hood Vent Through the Wall

The end result of cooking a tasty meal comes with some not-so-welcome byproducts, such as smells, moisture, and grease. Though it is common practice to install recirculating fans that distribute air through a carbon filter in your kitchen, from our experience in the ventilation business, it is clear that venting to the outside is far better. Range hoods that are installed correctly eliminate this pollution altogether, rather than filtering it out, which makes for better indoor air quality and keeps your kitchen surfaces clean.

The best way for residential kitchen ventilation to occur is through an exterior wall. While this project may seem like it is out of your realm of expertise, it is certainly doable if you are properly prepared and pay attention to detail. We have put together this guide to walk you through this process and ensure your kitchen is properly ventilated. For reference, this also complements other home updates, such as installing a 2x14 floor register for efficient airflow.

If you’d rather leave it in the hands of pros, this is the general process they will follow! 

Acquiring the Required Tools and Materials

Before making any cuts in the walls, it is important that all of your tools and equipment are ready and set to use. You would require a good quality power drill with either a masonry bit or a spade bit, depending on the material of the walls that you are working with. A hole saw bit that is slightly larger than the ducts would be necessary for making clean cuts.

As for the actual installation, you will need the appropriate rigid galvanized ducting, an exterior wall cap with a damper, as well as HVAC tape. Of course, you will also need a stud finder for finding the studs in the wall and a level for keeping everything straight. While it may sound obvious, it is also important that you use a good silicone caulk on the exterior gap. Finally, you will want to protect yourself by wearing safety glasses and work gloves.

Locating and Cutting the Vent Hole

The first step is all about accurate measurements. We suggest using the range hood template that came with your range hood to locate where you want the vent hole. Use a stud finder to make sure you don’t have any studs vertically in the path. If you hit a stud, you may have to move the range hood or frame out the opening, which is a skill level beyond what we’re doing here. Understanding how to install a range hood vent through the wall can make this process less daunting, especially when you are using the right template for your wall vent hood.

Once your location has been marked, you can drill a small pilot hole through the center of your marked area all the way through to the outside. This hole will become your point of reference for both sides of your wall. Using your hole saw or your jigsaw, you can now cut your interior drywall. Take care to remove any insulation to make room for your duct.

Next, go outside your house. Look for the pilot hole and use it as the guide for your cut in the siding. We recommend tracing the outline of the duct on the siding to ensure it fits snugly. Carefully cut through the wall, removing the siding and sheathing to create a tunnel into the kitchen.

Installing Ductwork and Wall Cap

Now your path is clear to slide your rigid ducting through your wall. What we recommend is measuring your wall thickness first to cut your ducting to exact size - it should be long enough to reach inside your hood and outside your hood cap. Attach your ducting inside to your range hood’s damper using HVAC tape to seal your airtight connection. This step is essential when installing ductwork for range hood systems to ensure maximum efficiency.

Slide the wall vent hood cap on the outside into the duct or over the top of it, depending on how it is designed by the manufacturer. Secure the wall cap to the outside wall using the correct screws for your type of siding material. Caulk around the perimeter where the wall cap meets the siding with a thick bead of silicone caulk.

Essential Safety Measures

Safety is always a concern during such a procedure, and it is essential that you prioritize it throughout the installation process. You should always turn off power to the kitchen circuit breaker before you begin cutting into walls, since you never know where power cables are routed. It is also important that you use a dust mask when cutting drywall and insulation to protect yourself from inhaling any dust or debris that may result from such processes. If you are not sure about the structure and position of plumbing and power cables, it is always better to hire a contractor.

Having a Cleaner Kitchen Environment

Installing a range hood side wall vent is a great investment in your home’s health and hygiene. By removing smoke and grease directly outside, you are protecting your cabinetry from grime and allowing your family members to breathe more easily. It is our hope that this tutorial has given you the power to take control of your kitchen ventilation. The heavy lifting is over; you are ready for your next feast!