Who Should I Call to Duct a Range Hood to the Exterior?
Converting a recirculating fan to a true ducted range hood is one of the best upgrades you can make for indoor air quality. However, the job is "multi-trade," involving cabinetry, electrical, and exterior wall or roof penetration. Because it sits at the intersection of several specialties, many homeowners aren't sure who to hire. Here is a breakdown of the professionals you should call to duct a range hood to the exterior.
1. The Primary Choice: HVAC Technicians
An HVAC (Heating, Ventilation, and Air Conditioning) technician is often the best person for the job. While they spend most of their time on furnaces and A/C units, "Ventilation" is in their name.
- Why hire them: They own the specialized tools for cutting through ductwork, understand CFM (Cubic Feet per Minute) requirements, and know how to minimize static pressure for better suction.
- Best for: Long duct runs, complex routing through soffits, or high-powered 600+ CFM pro-style hoods.
2. The Practical Choice: General Handyman
For a straightforward "straight-back" installation where the range hood sits on an exterior wall, a skilled handyman is often the most cost-effective option.
- Why hire them: They can handle the minor drywall repair, the electrical connection, and the exterior siding penetration in a single visit.
- Best for: Simple, short duct runs where the hood is already mounted or the path to the outside is clear and unobstructed.
3. The Structural Choice: General Contractors
If your range hood installation is part of a larger kitchen remodel, your General Contractor (GC) should handle the coordination.
- Why hire them: If the duct needs to pass through load-bearing studs or floor joists, a GC will know how to reinforce the structure properly to meet building codes.
- Best for: New construction, major renovations, or island hoods that require significant structural support in the ceiling.
4. The Roof Penetration Choice: Roofers
If your ductwork must go up through the attic and exit via the roof, you may need to call a roofer in addition to your HVAC tech.
- Why hire them: Many HVAC techs will run the pipe to the roof but refuse to cut the actual hole or install the roof cap to avoid liability for leaks. A roofer ensures the flashing is integrated correctly with your shingles.
- Best for: Any installation where the termination point is on a pitched roof.
5. Technical Requirements to Discuss with Your Pro
When you call for quotes, make sure to mention these specific details to ensure they are qualified:
- Duct Material: In many jurisdictions, building code requires smooth-walled rigid metal ducting. Do not allow a contractor to use flexible "dryer vent" foil, as it traps grease and is a fire hazard.
- Makeup Air: If you are installing a high-CFM hood (usually over 400 CFM), ask if they are familiar with makeup air requirements under local building codes.
- Wall Cap/Damper: Ensure they plan to install a high-quality exterior cap with a backdraft damper to keep cold air and pests out of your kitchen.
Conclusion
If you need to duct a range hood to the exterior, your first call should be to an HVAC company or a highly-rated handyman. If the path to the outside involves the roof, be prepared to have a roofer handle the final exterior seal. By hiring a pro who understands the balance between CFM power and duct diameter, you’ll ensure your kitchen stays smoke-free and your home remains energy-efficient and code-compliant.
