Ductwork Servicesin San Jose, CA
Professional duct installation, repair, sealing, and replacement for residential and commercial properties across Santa Clara County and the greater Bay Area.
- Most Jobs Completed in 1-2 Days
- Financing Available
- Up to 10-Year Manufacturer Warranty + 1 Year Labor
- Licensed & Insured in CA: #1060833
Fully Certified HVAC Company
Years of experience
Ductwork in Bay Area Homes Is Never a Standard Job
Homes across this region were constructed over seven decades of changing building codes, varying duct configurations, and differing construction materials. A 1960s ranch in Willow Glen, a two-story in Almaden, a Peninsula home with an addition that was never connected to the return system, each property calls for a different ductwork solution, and the materials are only one part of the answer.
San Jose Heating and Cooling has spent 20+ years performing ductwork services across Santa Clara County and the surrounding Bay Area. Before we recommend anything, we evaluate what your home actually requires: the layout and square footage, the condition of your current duct system, whether your existing setup supports proper airflow distribution, and how much conditioned air you are losing through leaky or uninsulated ducts. That is how a properly installed or repaired duct system ends up running quietly and efficiently instead of wasting energy from day one.
An HVAC Company Trusted by the Locals
We measure our success by the relationships we keep, and our customers agree: 4.8/5 stars across 85+ Google reviews.
“We recently had San Jose Heating and Cooling install a new heat pump in our house, and the experience was top-notch from start to finish. A special shout-out to Armando, who …”
Ohad M.
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“I recently had a brand-new AC unit and furnace installed, and I couldn’t be happier with the experience. From start to finish, the entire team was professional, respectful, and extremely knowledgeable…”
Moshe M.
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“I recently hired San Jose Heating and Cooling to clean out my attic and replace the insulation, and I couldn’t be happier with the results. The team did a phenomenal job transforming …”
California R.
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Ductwork Services We Provide
Duct Installation
For homes being built or upgraded to central HVAC for the first time, a properly designed duct system is what makes the equipment perform as intended. We size and route ductwork based on your home’s layout, room-by-room load requirements, and system specifications rather than replicating whatever came before. Correct duct design means even airflow throughout every room, quieter operation, and a system that does not work harder than it needs to.Duct Replacement
Older duct systems deteriorate over time. Flex duct collapses, connections loosen, and materials degrade in ways that cut airflow and drive up energy bills without any obvious warning. When patching or sealing is no longer sufficient, full duct replacement gives you a system built to current standards and sized to your equipment. Our ductwork services in San Jose, CA cover complete tearout and replacement handled by the same team doing the HVAC work.Duct Sealing and Air Sealing
Leaky ducts are one of the most common sources of energy waste in Bay Area homes. Conditioned air escaping into attics, crawlspaces, and wall cavities means your system runs longer to hit the same thermostat setting. We locate and seal leaks at connections, joints, and penetration points using appropriate materials, then verify the improvement before we leave. In many homes, duct sealing alone produces a noticeable difference in both comfort and monthly bills.Duct Repair
Not every duct problem requires full replacement. Disconnected runs, damaged sections, collapsed flex, and failed connections can often be corrected with targeted repairs. We inspect the full system, identify what is causing the problem, and repair it properly rather than applying a temporary fix that comes undone in the next season.
Duct Cleaning
Over time, ducts accumulate dust, debris, and in some cases mold that circulates through your home every time the system runs. Our duct cleaning service removes built-up contaminants from supply and return lines, improving indoor air quality and helping the system move air more freely. This is especially relevant before installing new equipment or after renovation work that generates significant dust.Attic and Crawlspace Ductwork
Ducts routed through unconditioned attics and crawlspaces are exposed to temperature extremes that reduce efficiency and accelerate wear. We address both the duct condition and the surrounding insulation as part of the same project, so heat gain in summer and heat loss in winter stop working against your HVAC system. Proper ductwork services in San Jose homes with attic-mounted systems make a measurable difference in how well the equipment performs year-round.Our Ductwork ServiceProcess
Every project follows the same sequence, whether it is a targeted repair or a full system replacement.
In-Home Assessment
We inspect the existing duct system, measure airflow performance, and document what is causing the problem before recommending anything. You receive a clear scope and a firm price, not a range.
System Design or Repair Plan
For installations and replacements, we design the duct layout to match your home's square footage, room configuration, and HVAC equipment. For repairs and sealing, we map out exactly what needs to be corrected and how.
Removal and Preparation
Old or damaged ductwork is disconnected and removed. If attic insulation, air sealing, or electrical work is part of the project, that work is completed before new duct materials go in.
Installation or Repair to Spec and Code
All ductwork is installed to manufacturer specifications and California code, with proper connections, supports, and sealing at every joint and penetration point.
Testing and Walkthrough
We test airflow across the system, verify that every room receives the intended distribution, and walk you through what was done and what to expect before we leave.
If you are not sure what you are dealing with, we will tell you honestly. Many systems we inspect still have usable life in them, and we would rather confirm that than recommend work you do not need.
Signs Your Ductwork Needs Attention
Duct problems rarely announce themselves clearly. These are the signals that your duct system deserves a professional look.
- Rooms that never reach the right temperature. Uneven cooling or heating across the house almost always traces back to airflow problems rooted in the duct system.
- Energy bills climbing without a change in usage. Leaky or poorly insulated ducts make your system run longer to compensate, and that shows up on your bill.
- Weak airflow from registers. Low output at individual vents usually points to collapsed flex, disconnected runs, or blockages somewhere in the system.
- Excessive dust accumulation. If surfaces are collecting dust faster than expected, the duct system may be pulling in unconditioned air from attics or crawlspaces.
- Noises during operation. Rattling, whistling, or popping sounds when the system runs can indicate loose connections, undersized ducts, or pressure imbalances.
- Visible damage or deterioration. Ducts that are visibly sagging, crushed, or disconnected in accessible areas are rarely in better condition where you cannot see them.
- A system older than 15 years. Duct materials and connection methods from older installations often fall short of current performance standards, particularly in homes that have had HVAC equipment replaced without addressing the distribution system.
What Sets Our Ductwork Services Apart
Ductwork and HVAC Handled by the Same Team
A new high-efficiency system connected to a leaking or undersized duct network will never deliver what it was designed to. San Jose Heating and Cooling handles ductwork services and HVAC installation in-house, so the full system is addressed in one project rather than split across multiple contractors and schedules.
Attic Insulation Addressed at the Same Time
Ducts routed through poorly insulated attic spaces lose a significant portion of their conditioned air before it reaches the living area. We perform attic insulation work alongside ductwork services, so you are not solving half the problem and leaving the other half for another day.Electrical Work Covered Under Our License
Some duct system upgrades involve HVAC equipment changes that require panel or wiring work. Our California license covers that electrical scope, so a panel that needs attention does not delay your project while you wait on a separate contractor.Certified Across Five Major Brands
San Jose Heating and Cooling is Diamond Certified and holds dealer certifications with Bryant, Carrier, Mitsubishi, Goodman, and Amana. Our technicians receive manufacturer training on the equipment they work with and stay current as products and standards evolve.
Licensed and Insured in California
Fully licensed in California (#1060833) with standard liability and workers’ compensation coverage, so qualified and accountable people are performing the work in your home.Warranty Coverage on Every Job
Most equipment we install carries manufacturer warranties of up to 10 years, and our own workmanship is backed by a 1-year labor warranty. If something comes up after we leave, you call us and we make it right.Financing Your Ductwork Project
Duct repair or replacement is rarely something homeowners plan for in advance. When you receive your invoice, you will have the option to apply for financing at that point, so a necessary upgrade can be spread out rather than paid all at once.
Ready to Improve Your Home's Airflow and Comfort?
Whether you need targeted duct repairs or a complete system replacement, we are ready to help. Fill out the form below and we will respond the same day, or call us directly to schedule your visit.
Serving San Jose & the Greater Bay Area
Your home comfort starts close to home. San Jose Heating and Cooling provides ductwork services for homeowners and businesses across Santa Clara County, with coverage extending into San Mateo, Alameda, and Contra Costa Counties.
Santa Clara County, CA
- San Jose
- Mountain View
- Palo Alto
- Santa Clara
- Sunnyvale
- Cupertino
- Milpitas
- Campbell
- Los Gatos
- Morgan Hill
San Mateo County, CA
- Redwood City
- Menlo Park
- San Mateo
- Foster City
- Belmont
Alameda County, CA
- Oakland
- Berkeley
- Fremont
- Livermore
- Pleasanton
Contra Costa County, CA
- Concord
- Martinez
- San Ramon
- Hercules
- San Pablo
- Also serving Vallejo
How long does a ductwork service appointment take?
Most duct repairs and sealing jobs are completed within one to two days. Full duct replacements or larger homes that also require insulation work may take three to four days depending on the scope.
How do you determine what my duct system needs?
We inspect the existing ductwork, measure airflow at the registers, and assess the condition of connections, insulation, and routing before making any recommendation. The findings determine whether repair, sealing, or full replacement is the right path.
Do you offer financing for ductwork projects?
Yes. When you receive your invoice, you can apply for financing at that time, so a necessary repair or replacement fits your budget without requiring a large upfront payment.
What warranty comes with ductwork services?
Our workmanship is backed by a 1-year labor warranty. Equipment and materials installed as part of the project carry applicable manufacturer coverage, with warranties of up to 10 years.
Do you handle ductwork for both new installations and existing systems?
Yes. San Jose Heating and Cooling provides ductwork services for new HVAC installations, replacements, and existing systems that need repair, sealing, or cleaning regardless of the original installer.
Can you add ductwork to a home that does not currently have it?
Yes. We design and install duct systems in homes being converted from ductless or radiant heating to central HVAC. Where adding ductwork is not practical, we can also discuss ductless mini-split options as an alternative path to zoned comfort.
Will duct sealing really make a noticeable difference?
In most Bay Area homes, yes. Studies consistently show that leaky ducts can account for 20 to 30 percent of conditioned air loss. Sealing those leaks reduces how long your system runs to meet the thermostat setting, which shows up in both comfort and energy bills.
Do you clean ducts as part of a replacement or repair project?
We recommend cleaning when there is visible contamination, after renovation work, or when the system has not been serviced in several years. We will advise you during the assessment whether cleaning should be part of your project scope.
Do you offer emergency service?
Yes. We offer 24/7 emergency service along with same-day appointments across the Bay Area.
Do you serve my area?
Most likely. San Jose Heating and Cooling serves all of Santa Clara County, reaches into the San Mateo Peninsula, and covers parts of Alameda and Contra Costa Counties, including up to Vallejo. Reach out and we will confirm your location.