Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Trusted Air Duct Repair for San Antonio Homeowners
Air Duct Repair in San Antonio typically costs between $275 and $1,200 depending on what needs fixing, and most repairs are completed in a single visit. When a duct comes loose, develops a tear, or leaks conditioned air into your attic, you’re paying to cool or heat space you don’t live in. Marcus Veale and the team at Linden Air Duct San Antonio have been handling these repairs since 2004, with every job backed by a written price before work starts and a written guarantee on what we fix.
We know letting a technician into your home is a real decision. That’s why we send you the tech’s name and photo before the visit, and they show a photo ID badge at the door. Every time. Call (430) 233-7681 to talk to a live person, day or night.
Key Takeaways
- What it costs: Most San Antonio air duct repairs run $275-$1,200, written down before we start.
- Who comes to your door: A background-checked, identity-verified technician whose name and photo you receive in advance.
- What backs the work: The 365-Day Done Right Promise. If a covered repair fails, we come back at no charge.
- How fast: Most repairs are done in one visit. No bait-and-switch pricing, no surprise invoices.
Styles & brands we work with
HVAC Duct Installation
HVAC Duct Installation is the process of fitting a new duct system or adding runs to serve rooms that were never properly connected to your central air. In San Antonio homes we see this most often in older additions, converted garages, and upstairs bedrooms that never quite cool in August. Linden Air Duct San Antonio installs ductwork sized to your equipment and your square footage, and gives you a written price for the full installation before any material is ordered.
A standard HVAC duct installation in San Antonio for a single room addition or a branch line typically runs $400 to $900. A full-system installation for an average 2,000-square-foot home usually falls between $3,000 and $7,500 depending on access, insulation requirements, and whether the old ductwork has to be removed first. Every installation quote includes material, labor, and cleanup, in writing, with no per-vent add-ons at the end.
New Home Additions and Garage Conversions
When a room is added without extending the duct plan, the existing blower has to work against a system it wasn’t designed for. We calculate the required airflow for the new space, then run properly sized supply and return lines so the room actually reaches the temperature on your thermostat. In neighborhoods like Alamo Heights, Terrell Hills, and Universal City, we regularly see converted garages that were never tied into the main trunk; a properly run branch line fixes the hot-box room for good.
Replacing Undersized or Rusted Ductwork
Older San Antonio homes often have ductwork that was undersized from day one or has rusted through in humid crawlspaces. We remove the failing sections and replace them with properly sealed, insulated runs matched to your current HVAC equipment. This usually lowers your monthly cooling bill, because the air now reaches the rooms it’s paying to condition.
Air Duct Replacement
Air Duct Replacement is the removal and replacement of ductwork that has failed beyond practical repair: crushed sections, pervasive mold, disconnected joints, or flex duct that has collapsed under attic heat. In San Antonio, where attics routinely hit 140°F in July, older plastic flex duct eventually turns brittle and starts leaking. Linden Air Duct San Antonio replaces failed sections or entire systems, and every replacement comes with a written guarantee plus our free second visit if a covered repair does not hold.
Replacing a single damaged run of flex duct in San Antonio generally costs $350 to $800. A complete air duct replacement for an average single-story home typically runs $3,500 to $8,000, with two-story and custom homes running higher due to access and demolition of the old system. Your written quote covers removal, disposal, new materials, sealing, and testing before we leave.
Collapsed and Crushed Duct Runs
Flex duct gets stepped on by roofers, pinched by poorly installed strapping, or crushed by stored boxes. A collapsed section can cut airflow to a room by half or more. We remove the damaged run, inspect the adjacent connections, and install a properly supported replacement that maintains its full diameter from the plenum to the register.
Mold and Moisture Damage in Ducts
When humidity from a leaking roof or a sweating coil gets into duct insulation, mold can take hold and circulate spores through the house. We do not just wipe the surface: the affected duct sections come out, the surrounding area is cleaned, and new ducting goes in with sealed connections and proper insulation. If your ducts have been wet, replacement is usually the honest answer, not a cleaning.
Ductwork Repair
Ductwork Repair is the targeted fix for specific points of failure in an otherwise sound system: separated joints, leaking elbows, torn flex, punctured trunks, and failing tape or mastic at connections. Most San Antonio homes lose 15% to 25% of their conditioned air to leaks, and more than half of the leaks we find are at joints and boot connections. Linden Air Duct San Antonio tests and seals or replaces the failing sections, then verifies the airflow at the register before we call the job done.
A targeted ductwork repair in San Antonio, such as sealing a separated joint or repairing a torn flex run, typically costs $275 to $600. Repairs that require access through a finished ceiling or wall run higher, usually $500 to $1,200, because of the patching and texture work needed afterward. Your price includes the diagnostic check, the repair, and a written guarantee on the work.
Leaking Joints and Separated Connections
Over years of heating and cooling cycles, taped joints dry out and pull apart, especially where metal trunk lines meet flex branches. The fix is to clean the surfaces, re-seat the connection, and seal it with mastic or a UL-listed tape rated for ductwork, not the gray fabric tape you can buy at a hardware store. We then verify with a smoke test or hand pressure that the joint is no longer bleeding air.
Torn and Punctured Flex Duct
Flex duct tears from age, pests, or accidental contact in the attic. A 6-inch tear can dump a third of your airflow into the attic. Depending on the extent of the damage, we either patch with a properly rated repair sleeve and sealant, or replace the entire run when the inner liner is compromised. We’ll show you before-and-after photos of the repair so you can see exactly what was done.
Duct Replacement
Duct Replacement is the full or partial swap of existing ductwork when repair would be throwing good money after bad. You know it’s time when your ducts are 25 years old or older, when multiple sections have failed, or when the system was poorly designed to begin with. Linden Air Duct San Antonio replaces ductwork with properly sized, sealed, and insulated runs, and we give you a written price for the entire replacement before work starts, so the final invoice matches the quote.
A partial duct replacement in San Antonio, swapping out two or three failed runs, generally costs $1,200 to $2,800. A full-home duct replacement typically runs $3,500 to $8,000, depending on home size, access, and whether the old system includes hazardous materials that require special handling. We itemize everything in your quote.
Old Sheet Metal Systems That Have Rusted Through
Galvanized steel trunks in older San Antonio pier-and-beam homes eventually rust, especially where condensation collects on the duct exterior. A rusted-through trunk leaks constantly and can’t be reliably patched. We remove the failed sections and replace them with sealed metal, insulated where code requires it, and connected properly to the existing drops.
Flex Duct That Has Reached the End of Its Life
The inner liner of flex duct breaks down from constant temperature swings in the attic. Once the liner tears, insulation particles and attic dust can enter the airstream. When multiple runs show liner failure, replacing the set is cheaper over five years than repairing them one at a time, and you stop paying to condition the attic.
Ductwork Installation
Ductwork Installation is the design and installation of a complete duct system, usually for a new build, a full renovation, or a home that never had central air. It is more involved than replacement because the layout, sizing, and return-air strategy all have to be designed from scratch. Linden Air Duct San Antonio does manual load calculations for every room, plans the trunk and branch layout to balance airflow, and installs the system with sealed, insulated ductwork that passes a final airflow test.
Ductwork installation in San Antonio for new construction or a full system retrofit generally runs $4,000 to $9,500 for an average home, with larger custom homes going up from there. Variables include duct type, insulation R-value, number of zones, and how much of the system runs through unconditioned attic space. Your written quote includes design, materials, labor, and testing.
New Construction and Major Renovations
When walls are open and the framing is exposed, it is the right time to install a properly engineered duct system, not the cheapest possible flex layout. We work directly with your general contractor or directly with you, and we coordinate with your HVAC contractor so the blower, coil, and ductwork are matched. A correctly sized duct system is quieter, filters better, and keeps every room within a degree or two of the thermostat setting.
Homes Converting from Window Units to Central Air
Older San Antonio homes in neighborhoods like Windcrest and Kirby, and nearby Converse, were sometimes built with window units or wall heaters and never retrofitted for central air. We design a duct system that works with the existing structure, running trunks through closets, soffits, or the attic with minimal framing changes. The difference in comfort, and the drop in your electricity bill during summer, usually covers the cost within a few years.
Brands We Service
Our crews work with professional-grade equipment from Rotobrush and Nikro. The Rotobrush system lets us clean and repair duct interiors with a powered brush and HEPA-filtered negative-pressure extraction, which matters when you’re repairing a section and don’t want to push debris into the rest of the system. Nikro components are used for the high-lift, high-suction work where ducts run through tight attic spaces.
We install and recommend air-quality products from Honeywell, AprilAire, Abatement Technologies, and Guardsman. Honeywell and AprilAire media filters and whole-house air cleaners are our most common add-on after a duct repair, because clean ducts and clean air go together. Whether you have a system built around these brands or any other make, we can service and repair it.
See the difference
Before
After
Before
After
Before
AfterSigns You Need a Pro Right Now
- Rooms that never reach the thermostat setting. One bedroom that stays 78°F while the living room hits 72°F usually means a disconnected or crushed duct run feeding that room. The longer it runs that way, the harder your AC works and the higher your bill climbs.
- Visible dust or insulation blowing from a register. If you see gray or pink fibers on the vent louvers, the inner liner of your flex duct has likely torn. That means insulation particles are in your breathing air, and the duct needs replacement, not just cleaning.
- A sudden spike in your electric bill with no change in habits. CPS Energy bills in San Antonio jump sharply when a duct separates and conditioned air dumps into the attic. If your bill jumped 20% or more from the same month last year, a duct leak is a likely cause.
- Whistling or flapping sounds from the vents. Air escaping through a small gap under pressure makes noise. A flapping sound usually means a section of flex duct or its inner liner has come loose and is moving with the airflow.
- Hot or cold spots on walls or ceilings near duct runs. When a duct leaks inside a wall cavity, the drywall near the leak changes temperature. You can sometimes feel it with your hand. That’s air you paid to condition, bleeding into the framing.
If you’re noticing any of these in your San Antonio home, call (430) 233-7681 and describe what you’re seeing. We’ll tell you honestly whether it sounds like a repair job or something else.
Our Process, Step by Step
- 1
You call, a person answers. Day or night, you get a live voice at (430) 233-7681. We ask what you’re seeing and hearing, and we tell you honestly whether it sounds like a duct repair, a cleaning, or something your HVAC contractor should look at first.
- 2
We send you the technician’s name and photo. Before the visit, you receive the name and photo of the person coming to your door. At the door, they show a photo ID badge and arrive in a clean, marked uniform. That’s the Threshold Standard, and it applies to every visit, no exceptions.
- 3
Diagnostic walkthrough with you. The tech walks the system with you, checks the plenum, visually inspects accessible duct runs, and measures airflow at the registers where the problem shows up. You’ll see what they see, and you’ll get a plain-English explanation of what’s actually wrong.
- 4
Written price before any work begins. You get a line-itemed price for the repair, replacement, or installation, in writing, before we touch anything. No open-ended hourly billing, no “we’ll see how it goes.” The number on the quote is the number on the invoice.
- 5
The repair, tested and verified. We complete the work, seal the connections with mastic or rated tape, then verify airflow at the affected register before we leave. You get before-and-after photos, and a written guarantee covering the repair for 365 days. If it fails, we return at no charge.
How Much Does Air Duct Repair Cost in San Antonio?
A typical air duct repair in San Antonio runs $275 to $600 for targeted fixes like sealing a separated joint, repairing a torn flex run, or reconnecting a fallen boot. Repairs that require cutting into a finished ceiling or wall, or replacing multiple failed sections, generally run $600 to $1,200. A full air duct replacement for an average home runs $3,500 to $8,000, and a new ductwork installation for a full system runs $4,000 to $9,500.
What moves the price is access, not mystery. An attic with a plywood walkway is fast and safe. A crawlspace with 18 inches of clearance takes longer. Repairs near a furnace plenum cost more than a branch line repair because of the disassembly involved. If drywall has to be opened, patching and texture add cost.
The easiest way to avoid overpaying is to get the price in writing before the work starts. That’s how we operate, every job, no exceptions. A free estimate from Linden Air Duct San Antonio includes a diagnostic look at the failing section, an honest recommendation (repair vs. replace), and a written quote you can hold us to. Call (430) 233-7681 and get a real answer from a real person.
What Affects the Price
- Access: Attic, crawlspace, or finished-wall versus open utility room.
- Materials: Metal versus flex, insulation R-value, and any code-required upgrades.
- Extent: One joint versus six failed runs; a partial patch versus a full replacement.
- Removal: Hauling out old ductwork and proper disposal adds labor.
Our Service Area Near San Antonio
Linden Air Duct San Antonio serves homeowners across the greater San Antonio area, including Alamo Heights, Windcrest, Universal City, Kirby, Lackland AFB, Terrell Hills, Castle Hills, Leon Valley, and Converse. We also handle Air Duct Repair in Selma and Air Duct Repair in Fair Oaks Ranch for homeowners just north of the city. Most visits are scheduled within a few days, and we work around your schedule, not the other way around. If you’re outside these areas, call us and ask; we often extend service to nearby unincorporated communities.
Serving San Antonio, TX - Our Local Coverage Area
We’re based in the San Antonio area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions About Air Duct Repair in San Antonio
Air duct repair is the targeted fix for specific failures in your duct system: separated joints, torn flex, crushed runs, leaking elbows, and failed seals. It’s different from cleaning, which removes buildup, and from replacement, which swaps out failed sections entirely. A repair restores airflow and sealing to the existing ductwork, and it should always come with a written guarantee.
Most repairs take 2 to 4 hours on site, depending on access and whether drywall has to be opened. A simple joint repair in an accessible attic can be done in under two hours. A repair that requires ceiling access, patching, and texture matching may take most of a day, with the patch work done in the same visit.
Targeted repairs typically cost $275 to $600, more involved repairs run $600 to $1,200, and full replacements run $3,500 to $8,000. Your exact price depends on access, materials, and how much of the system has failed. We give you a written price before any work begins, so the quote is the invoice. Call (430) 233-7681 for a free estimate.
We service and install duct systems regardless of brand, and we work with professional-grade equipment from Rotobrush and Nikro. We install air-quality products from Honeywell, AprilAire, Abatement Technologies, and Guardsman. If your system was built around a particular brand, we can match materials and components to keep it consistent.
Duct repair is usually a scheduled job, not an after-hours emergency, because it requires attic or crawlspace access and proper materials. That said, a live person answers our phone 24/7 at (430) 233-7681. We’ll talk through what’s happening and get you scheduled for the earliest available visit that works for you.
Yes. Every air duct repair from Linden Air Duct San Antonio includes a written guarantee covering the work for 365 days, under the 365-Day Done Right Promise. If a covered repair does not hold, we come back and make it right at no charge. The guarantee is in writing on every job, not a verbal promise.
Clear a path to the attic access or crawlspace entry, move any stored items that block duct runs, and make sure a person over 18 is home for the visit. Pets should be secured in another room. We handle the rest including cleanup, and we’ll show you before-and-after photos before we leave.
Schedule Your Air Duct Repair Service in San Antonio Today
When your ducts are leaking, every hot San Antonio afternoon costs you money. Call (430) 233-7681 for a free, no-obligation estimate. You’ll get a live person, a written price before any work starts, and a technician whose name and photo you already know. Marcus Veale and the Linden Air Duct San Antonio team have been serving San Antonio homeowners since 2004. Let’s fix it right.
Written by Marcus Veale, Owner at Linden Air Duct San Antonio, serving San Antonio since 2004.