Top-rated independent heating and cooling across California's Central Valley and the Sierra foothills

Ductwork Repair in San Jose, CA — Book a Visit Today

Rooms that never match the thermostat, a dusty return, and a system that runs and runs are often duct problems rather than equipment problems. We do ductwork repair throughout San Jose, crawling attics and subfloors to find crushed flex, disconnected boots, and joints that gave up decades ago. Attic ducts in this area sit in serious summer heat, so leaks cost you on the hottest afternoons. You can confirm every supply vent is open and unblocked before we arrive. For anything past that, call us or describe the uneven rooms on the quote form.

Call (888) 381-2953

A real person answers
Open 7 days
Written quote before work starts

Taking calls until 5:00 PM PT

Ductwork Repair technician working in San Jose, CA

All major brands repairedCarrier Trane Lennox Goodman Rheem York American Standard Bryant

Ductwork Repair technician in San Jose, CA

Common ductwork faults in San Jose homes

One bedroom never gets cold, the rest of the house is fine Disconnected or crushed branch run, closed damper, or an undersized takeoff
The AC runs all afternoon and the house still will not hold temperature Major supply leakage into attic or crawlspace, often at the plenum or first joints
Dust settles on everything within a day of cleaning Return-side leaks pulling attic and wall-cavity dust into the airflow
The attic feels cold and the vents feel weak Failed connections at boots and fittings, or torn duct insulation
Air smells musty or dusty every time the system starts Return leakage, wet insulation, or contaminated duct interiors

People call this ductwork repair, air duct repair or duct sealing. Same visit, same written quote, same technician.

San Jose coverage

From San Jose we also cover Santa Clara, Sunnyvale, Campbell, Los Gatos, Milpitas, Cupertino, Saratoga and Morgan Hill.

Other repairs we do in San Jose

Ductwork Repair in cities near San Jose

All ductwork repair → · San Jose service directory →

San Jose permits, codes and utility programmes

Here in San Jose, Pacific Gas and Electric (PG&E) supplies electricity and gas.

Before you buy, look at TECH Clean California heat pump incentives and Energy Upgrade California. We will not promise something that closed last quarter, but we will tell you what is running when we quote.

Replacements fall under California Title 24, Part 6 and normally need a permit, with HERS verification and CF2R/CF3R registration on most changeouts. City of San Jose Building Division handles them.

The federal 25C Energy Efficient Home Improvement Credit applies to qualifying equipment, and the efficiency tier it requires is worth checking before you choose a system.

Guides & troubleshooting

How we compare to other HVAC companies in San Jose

	Central Valley Air	Big-box repair chains	Handyman listings
Written quote before any work	✓	✕	✕
Live answer seven days a week	✓	✕	✓
Every major brand, gas or electric	✓	✓	✕
Independent, no manufacturer quotas	✓	✕	✓
Crews familiar with homes like yours	✓	✕	✓

Call (888) 381-2953

The same on every visit

The quote comes first, in writing

Covering 123 cities across California, Nevada.

Phones answered by people

Open 7 days, 8:00 AM to 5:00 PM PT.

Independent of every manufacturer

Carrier, Trane, Lennox, Goodman and more. We are not an authorized dealer for any of them.

Ductwork Repair in San Jose — quick answers

How do you find a leaky duct?

We start with a static pressure reading and room-by-room airflow, then inspect the accessible runs in the attic or crawlspace. Where needed we pressurize the duct system to measure total leakage and locate it, instead of guessing from the vents.

Is sealing enough, or do I need new ducts?

It depends on the condition of the material. Sound flex and metal with failed tape and loose joints seals up well. Runs that are brittle, crushed, rodent-chewed or holding wet insulation get replaced, because sealant on failing duct will not hold.

How long does ductwork repair take?

Targeted sealing and a few reconnections are usually a same-day visit. A full replacement in an average home commonly runs one to two days depending on attic access, layout and how many runs there are. We give you a timeline before we start.

Will fixing my ducts help my energy bills?

Leaking supply ducts push conditioned air into unconditioned space, so sealing them means more of what you paid to cool ends up in your rooms. We will not put a number on it, but the comfort difference in problem rooms is usually obvious.

How soon can you get to my San Jose home for AC repair?

Call us and we will give you a real window rather than a vague promise. During a July heat run the same-day slots fill early, so morning calls have the best odds. If your system is completely dead, tell us when you book so we can prioritize it. Before we arrive, check the thermostat batteries and settings, look for a tripped breaker, and clear leaves and clippings away from the outdoor unit. Those few checks sometimes solve it and always help us diagnose faster.

How it works

Step 1
Tell us the symptom
Call or fill in the quote form. We ask what changed, when it started, and what the thermostat reads. That tells us whether to bring parts for a cooling fault or a heating fault.
Step 2
We diagnose on site
A technician checks the thermostat, the electrical side, airflow through the filter and coil, refrigerant pressures, and the outdoor unit. You get told what failed and why, in plain words, before anything is replaced.
Step 3
Repair and verify
We make the repair, then run the system and measure the results at the vents. If a part needs ordering, we say so and give you a realistic window instead of a vague promise.

Call (888) 381-2953

A real person answers
Open 7 days
Written quote before work starts

Why homeowners call us

Built for real valley heatWe work in areas where afternoons sit above 110 degrees and systems run for months without a break. That shapes how we size repairs, check capacitors and contactors, and judge whether a compressor is genuinely done.
Attic and package unitsPlenty of homes across the region run attic air handlers or rooftop package units instead of a garage furnace and a side-yard condenser. We are used to the access, the duct runs, and the drain issues those setups bring.
Dust and debris we expectAg dust, cottonwood fluff and grass clippings pack condenser coils and starve a system of airflow. We clean what we find and show you the difference, rather than adding refrigerant to a unit that just could not breathe.
Heating too, not only ACFurnace repair, heat pump faults and no-heat calls get the same attention as summer work. Ignition problems, cracked or failing components and short cycling all get diagnosed before we recommend anything larger.
All major brands, gas & electricFrom Carrier and Trane to Lennox, Goodman, Rheem and Bryant, serviced independently.
Straight answersWhen a replacement beats a repair, we tell you, sometimes before we roll a truck.