HVAC · Property Services

Ductwork Installation & Repair

Leaking, crushed, or undersized ductwork wastes a large share of your HVAC system's output before conditioned air ever reaches a room. NorTech connects you with a verified C-20 HVAC contractor for both new duct installation and repair of existing runs, up-front after an airflow assessment.

Pricing set by local pros

90-day warranty

Before & after photos

Background checked

Book Ductwork Installation & Repair

Tell us about the job

Up-front — no surprises

Your pro backs the work for at least 90 days

Background-checked pros

Before & after photos

Backed by The Blue Promise

Need more hands? Pick a company that sends crews and choose how many technicians. Want a second pro for a different job? Add one right after you book.

Book several services with one pro. Pros set their own bundle discounts.

Compare Bids

Bigger or unusual job? Local pros bid on it and you pick who does the work.

Ductwork installation and repair across the Bay Area

Ductwork problems are easy to miss because the symptom shows up as an uneven-temperature room, not visible damage — a crushed flex duct in an attic, a disconnected joint behind drywall, or runs that were never sized for the space they serve. NorTech verifies an active C-20 license before a provider can be booked to assess, seal, repair, or install ductwork, with an airflow test confirming the fix actually worked.

The real cost of leaky ductwork

Duct leakage in an unconditioned attic or crawlspace means you're paying to heat or cool that space instead of your living areas — a significant, ongoing waste that compounds every time the system runs. Sealing and repairing leaks is often one of the more cost-effective HVAC improvements available.

Sizing new duct runs correctly

A duct run sized for a different room or an assumption about airflow, rather than an actual calculation for the space it serves, is a common reason a newly finished room never quite reaches a comfortable temperature. Correct sizing during installation avoids inheriting that problem in a brand-new space.

When to book ductwork installation & repair

One or two rooms are consistently hotter or colder than the rest of the house

You can hear air escaping from ducts in the attic, crawlspace, or garage

You're finishing an attic, garage, or addition that needs new duct runs

Utility bills are high relative to your system's rated efficiency

A home inspection or energy audit flagged duct leakage or undersized runs

90-Day Warranty

Backed by your provider’s warranty. If covered work fails, your provider makes it right — free.

Looking for a licensed HVAC contractor? Bigger jobs and anything that needs a permit go to a verified California C-20 contractor. See licensed HVAC contractor services.

Frequently asked

Ductwork Installation & Repair — common questions

The assessment includes an airflow and visual inspection of accessible ductwork to locate disconnected joints, crushed sections, and leaks before sealing or repair begins.

This covers both — repair of existing ducts where they're salvageable, and new installation where a run needs to be replaced or added. Scope is confirmed before work starts.

New ductwork installation typically requires a permit; your verified C-20 contractor handles that as part of the scope.

A workmanship warranty covers the work. Seams that come apart, insulation that slips, or a section that was sealed and then leaks again inside the warranty window is corrected at no charge, and the airflow test at the end of the visit documents how the system performed on day one.

It depends on the extent of the issue and duct accessibility; your contractor will give a realistic timeline after the assessment.

Sealing significant leaks often improves system efficiency noticeably, though the exact savings depend on how much leakage was present.

Didn’t find your answer? Nova, our AI assistant, is in the chat bubble in the bottom-right corner and can help anytime.

What homeowners say

Ductwork Installation & Repair reviews

Verified reviews from every city where NorTech connects customers with providers will appear here.

Be the first ductwork installation & repair review

Your pro backs the work with a workmanship warranty — if covered work is not right, your pro makes it right, free. Book with confidence and tell the Bay Area how your pro did.

Book Ductwork Installation & Repair

Check your coverage

Is Ductwork Installation & Repair available near you?

NorTech connects you with vetted local providers for ductwork installation & repair. Enter your ZIP to check coverage and see your price.

Are there pros in your area?

Enter your ZIP code and we’ll point you to your local hub.

or search your city

Atherton Portola Valley Woodside Los Altos Hills Hillsborough Belvedere Tiburon Ross San Francisco Palo Alto

Browse the full coverage area →

Explore more

Related home services

Homeowners who book ductwork installation & repair often need a hand elsewhere too. Browse related NorTech services — pricing set by local pros, vetted local providers, and a guarantee or warranty suited to each service.

HVAC System Replacement

Full furnace/AC system replacement, not a repair — sized, permitted, and installed by a verified…

Learn more

Mini-Split Installation & Repair

A new ductless mini-split system installed, or an existing one diagnosed and repaired — always a…

Learn more

Furnace Repair

Furnace not heating, cycling wrong, or making noise — diagnosed and repaired.

Learn more

AC Repair

AC not cooling, leaking, or tripping the breaker — diagnosed and repaired.

Learn more

Air Duct Cleaning

A full duct-system cleaning to clear dust, allergens, and debris from your HVAC.

Learn more

HVAC Maintenance & Tune-Up

For a home: a seasonal tune-up to keep your system running efficiently and catch small problems…

Learn more

Whole-House Fan Installation

A whole-house fan installed in the attic to pull cool evening air through the home.

Learn more

Indoor Air & Comfort Upgrades

Comfort and air-quality upgrades installed by a licensed HVAC contractor: zoning, humidifiers, d…

Learn more

Boiler, Radiator & Hydronic Heat Service

Service, repair and tune-up of boilers, radiators and radiant floor heating by a licensed HVAC c…

Learn more

Book in minutes

Ready to book ductwork installation & repair?

Choose a background-checked local provider, see your price the moment you enter your ZIP, and lock in a time that works — backed by your pro’s 90-day workmanship warranty.

Book Ductwork Installation & Repair Compare Bids

Prefer to compare bids yourself?Get quotes from independent local contractors — you pick who does the work.Compare →