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.
Why San Antonio Homeowners Choose Carrier Air Duct Cleaning
Carrier in San Antonio air duct cleaning is a specialized service, not a generic vacuum job. We’re an independent Carrier service provider, not a factory-authorized dealer, and our techs pull apart the ductwork connected to Carrier Infinity, Performance, Comfort, and WeatherMaker systems every week under San Antonio’s actual operating conditions: cedar pollen season, caliche construction dust, and humidity that never quits. That ground-level familiarity means we diagnose and clean your system based on how Carrier blowers, coils, and zoning dampers actually behave here, not from a manufacturer’s national checklist. For a free estimate on your Carrier system, call (254) 347-3897.
Why Trust Cardinal Air Duct San Antonio for Your Carrier Air Duct Cleaning?
Omar Haddad, our owner, spent nearly two decades taking contaminated duct systems apart and putting clean ones back together before building Cardinal Air Duct San Antonio. He trained at Los Angeles Trade-Technical College and has worked on Carrier equipment in tract homes near Lackland AFB and older pier-and-beam houses in Alamo Heights, learning exactly how San Antonio’s brutal summers push HVAC systems to their limits. His crew operates the same professional-grade equipment on every Carrier job: Rotobrush rotary brush systems, Nikro HEPA-rated negative-pressure vacuums, and Abatement Technologies containment units.
That matters for Carrier owners specifically. Carrier’s variable-speed blowers and tightly engineered air handlers respond badly to half-measures. A shop-vac connected to a floor register won’t touch the debris packed inside a Carrier Infinity blower wheel. We pull the blower assembly, degrease the wheel fins, and clean the evaporator coil downstream. We also carry OEM-equivalent duct components and name-brand sealants matched to Carrier’s static pressure specs, so any repair we make holds up under the airflow demands these systems create.
Styles & brands we work with
Common Carrier Air Duct Cleaning Problems We Fix in San Antonio
- Dust and pet hair jamming the variable-speed blower in Infinity air handlers. The Infinity series uses an electronically commutated motor that ramps up and down based on load. When caliche dust and pet hair pack the blower wheel fins, the motor can’t reach its target RPM. You hear extra vibration, the system runs longer, and the motor works harder than it should. We pull the wheel, degrease it, and restore balanced operation.
- Mold growth on evaporator coils in Performance heat pumps. San Antonio’s humidity means the coil in a Performance heat pump stays damp for months at a time. When dust and pollen from the Hill Country’s cedar and oak settle on that moisture, mold takes hold. It’s not just a smell problem; the coil’s heat transfer drops. We clean the coil with the blower compartment contained so spores don’t recirculate through your living space.
- Flex ducts separating at Carrier supply plenums. In 1970s-to-1990s tract homes across San Antonio, the original flex duct connections at the supply plenum dry out, sag, and separate. That gap pulls attic insulation and dust directly into the airflow. We re-secure the connection, seal it to Carrier’s static pressure specifications, and replace the flex section if the liner is compromised.
- Zoned Comfort Series dampers sticking from lint and construction debris. Comfort Series zoned systems rely on motorized dampers that open and close based on thermostat calls. Lint, drywall dust, and caliche grit accumulate on the damper blades and actuators, causing them to stick halfway or fail to close fully. A zone that won’t close means rooms you’re not conditioning are still getting air, and the system never reaches the comfort level you set.
- WeatherMaker systems with restricted returns caused by collapsed pier-and-beam ducting. In older neighborhoods like Jefferson and Beacon Hill, we regularly find ducts under pier-and-beam floors collapsed, chewed by rats and squirrels, and coated in a fine white caliche dust that re-circulates every time the AC kicks on. A WeatherMaker with a collapsed return duct runs starved for air, which shortens compressor life and spikes your electric bill.
Carrier Parts & Our Repair-vs-Replace Approach
We use OEM-equivalent duct components matched to Carrier’s engineering tolerances, not universal bargain parts. For sealing, we run name-brand sealants rated for the static pressure Carrier systems generate, especially on Infinity variable-speed installations. When a flex duct run has separated or torn, we repair the section rather than replace the whole run if the core metal or flex liner is still sound. When it’s not, we tell you straight: a forty-year-old flex run with a shredded liner isn’t worth patching. You get a written price before any part is ordered, and a written guarantee on every repair. Call (254) 347-3897 for an honest assessment of your Carrier ductwork.
Our Carrier Service Process – Step by Step
- 1
Diagnosis. We inspect the full duct path from return grille to supply registers, check static pressure, and look at the blower wheel, coil, and plenum connections. For Carrier zoned systems, we cycle the dampers to confirm they open and close.
- 2
Written review. Before any work starts, you get a written price itemizing exactly what we found, what we’ll do, and what it costs. That number does not change at the door.
- 3
Repair and cleaning. We seal the supply and return plenums, clean the blower and coil, and address any failed flex sections. For cleaning, our Nikro HEPA vacuum runs in negative-pressure mode, meaning the loosened debris goes straight into the unit, not back into your living room.
- 4
Post-service test. We re-measure static pressure, cycle the system through heat and cool, and confirm airflow at every register. You get before-and-after photos of your own ducts.
- 5
365-Day Done Right Promise. If the work isn’t right within 365 days, we return and correct it at no charge. That’s the longest-standing satisfaction window in the trade, and it applies to every Carrier job without exception.
See the difference
Before
After
Before
After
Before
AfterCarrier Products We Service & Install in San Antonio
We clean, seal, and repair the ductwork connected to the full Carrier residential lineup in Carrier in New Braunfels and San Antonio: Infinity Series (including the 24VNA0 variable-speed heat pump and Infinity air handlers), Performance Series heat pumps and air conditioners, Comfort Series zoned systems, and WeatherMaker models still running in older homes inside Loop 410. We stock common OEM-equivalent duct components locally for same-day turnaround on most repairs, and we’re set up for blower cleaning, evaporator coil cleaning, and duct sealing on every one of these lines. No factory authorization, just a working knowledge of how each series behaves after a decade of Texas summers.
One job stays with us because it’s the clearest example of what San Antonio does to Carrier equipment: a home with a Carrier Infinity 24VNA0 system running its variable-speed blower at 1100 RPM constantly. The blower wheel fins were packed with a half-inch layer of caliche dust and pet hair, so we pulled it, degreased it, and resealed both supply plenums where air was being pulled from the attic. Static pressure dropped from 0.8″ w.c. to 0.45″ w.c. and the unit could finally ramp down to its lowest setting. That’s the difference between a surface cleaning and actual Carrier duct restoration.
We Also Service These Brands
Most San Antonio and Carrier service in Cibolo homes don’t run a single brand top to bottom. We work on Carrier ductwork and the Lennox and Trane equipment it’s often paired with. If your system is mixed-brand, we handle it without blinking.
FAQs – Carrier Air Duct Cleaning Service in San Antonio
No. We’re an independent Carrier service provider with deep hands-on familiarity with Carrier’s residential product lines. We are not factory-authorized, which means our loyalty is to you, not a manufacturer’s service territory or warranty reimbursement schedule. Our techs work on Carrier Infinity, Performance, Comfort, and WeatherMaker systems daily, and our 365-Day Done Right Promise covers every Carrier job we do.
For duct components and sealing, we use OEM-equivalent parts matched to Carrier’s engineering tolerances and static pressure specifications. That means no universal-fit cheap fixes that degrade airflow. For anything that touches the electrical or refrigerant side of your system, we recommend Carrier OEM parts and will tell you when a third-party part isn’t worth the savings. You’ll see the part cost on your written estimate before any work begins.
Yes. The Carrier Infinity air purifier sits in the airflow path, and its capture efficiency drops when the upstream ductwork is loaded with dust. Clean ducts mean less particulate reaching the purifier’s charging section, so the purifier works on what it was designed for rather than acting as a first-stage filter for a dirty system. If your purifier has been running longer to hit the same air quality, dirty supply ducts are often the reason.
That musty smell is almost always mold growing on the evaporator coil. San Antonio’s humidity keeps the coil wet, and winter dust from the Hill Country’s cedar and oak settles on that moisture and feeds the mold. Once the AC cycles on, the odor pushes through your supply registers. We clean the coil under negative-pressure containment, then treat the coil to slow future growth. Call (254) 347-3897 and Omar can tell you over the phone whether what you’re smelling sounds like a coil issue or something else.
You can do surface-level things like checking for visible separation at registers, but a real flex duct cleaning requires professional negative-air equipment. Flex duct liners are fragile, and a household vacuum can tear the inner liner. The bigger issue in San Antonio is that flex ducts in older tract homes are often separated at the plenum or collapsed under pier-and-beam floors, conditions you can’t see or fix from inside the house. That’s why Dryer Vent Cleaning and duct maintenance should always be handled by a trained professional with the right equipment. This is a job for a trained professional with the right equipment.
Yes. We seal duct connections with materials matched to Carrier’s static pressure specs, and we cycle your Comfort Series dampers during testing to confirm they open and close smoothly after the work is done. If a damper is sticking from lint and construction debris, we clean it while we’re in the system. The goal is sealed ducts that let every zone get the airflow it was designed for.
Most standard Carrier air duct cleanings in San Antonio run $350 – $600 for a typical single-system home, depending on the number of returns, the accessibility of the duct runs, and whether we’re also cleaning the blower and evaporator coil. Homes with zoned Comfort Series systems or collapsed pier-and-beam ducting under the floor can run higher because of the extra labor. You’ll get a written price before any work starts, and that number does not change at the door. Call (254) 347-3897 for an exact quote on your specific Carrier system. Estimates are free.
Book Your Carrier Service in San Antonio, TX
If your Carrier system is running louder, smelling off, or circulating dust you can see on your registers, call Omar and the Cardinal Air Duct San Antonio team at (254) 347-3897. You’ll get a live person, a written price before work begins, and the 365-Day Done Right Promise on every Carrier job we do. Clean ducts, straight answers, real price – that’s the whole pitch.
Written by Omar Haddad, Owner at Cardinal Air Duct San Antonio, serving San Antonio since 2005.