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.
Fast, Reliable Air Duct Cleaning Across San Marcos
Air duct cleaning in San Marcos typically costs between $350 and $650 for a standard single-family home, and most jobs are completed in a single visit. If you’ve just moved into a new build off Old Ranch Road 12 or you’re in a 1980s east-side home off Riverside Drive, your ducts likely need attention for very different reasons. Cardinal Air Duct Austin serves San Marcos with background-checked, uniformed technicians who run professional-grade Rotobrush and Nikro equipment, not truck-mounted shop vacs. Call (940) 283-6595 and a live person answers, 24/7.
Why Cardinal Air Duct Austin Is San Marcos’s Preferred Air Duct Cleaning Company
San Marcos presents a split problem. Brand-new subdivisions like Whisper and Trace have ducts full of construction dust and drywall debris at move-in. Older neighborhoods near the square and along Hopkins Street have original flex duct, sagging and torn in unconditioned attics, and often chewed through by roof rats and squirrels. Our crews know both failure modes because we work them every week. Omar Haddad, who leads our San Marcos operations, has walked more attics in this city than most contractors drive past, and he trains every technician to identify whether a home needs debris extraction, duct repair, or simply a thorough cleaning with HEPA-filtered negative pressure extraction.
San Marcos homeowners call us because the booking experience is built for how they actually live. You get a live trackable arrival window, the tech’s name before they even ring the bell, and a written price handed to you before any work starts. That’s The Relay Standard, and it applies to every single job. No vague estimates, no price that shifts at the door, no four-hour sitting-around. When we’re done, you get before-and-after photos of your own ducts and a digital invoice payable from a link. If anything isn’t right within 365 days, we come back and correct it at no charge. That’s the 365-Day Done Right Promise, not a select-jobs warranty.
Styles & brands we work with
Commercial Air Duct Cleaning in San Marcos
Commercial Air Duct Cleaning in San Marcos carries extra weight because this city keeps adding restaurants, retail, and multi-family properties near Texas State University and along the I-35 corridor. Turnover cleaning in apartments and student housing means ducts that haven’t been touched through multiple leases. Kitchens push grease vapor into exhaust and return ducts. Offices with high foot traffic pull in Hill Country pollen, construction dust, and whatever the parking lot kicks up. A typical commercial job in San Marcos runs between $800 and $2,500 depending on square footage, access, and how long it’s been since the last cleaning. We provide a written quote after a walkthrough, always before work begins.
Restaurant and Retail Duct Maintenance
Restaurant ductwork in San Marcos collects grease film surprisingly fast, even in front-of-house HVAC. Return ducts near kitchens pull oily air back through the system, where it bonds with dust and restricts airflow. Retail spaces near the outlet malls fight constant dust from foot traffic and nearby construction. We schedule recurring commercial cleanings on a cadence that matches your usage, and we document every job with photos.
Multi-Family Turnover Cleaning
Student apartments and duplexes near campus turn over every summer, and dirty ducts are a top complaint from incoming tenants. Dryer vent cleaning and HVAC supply duct cleaning between leases reduce maintenance calls and improve indoor air quality immediately. We work with property managers in San Marcos to batch clean multiple units during turnover weeks, which keeps per-unit costs lower.
Air Duct Cleaning Services in San Marcos
Air Duct Cleaning Services in San Marcos start with a camera inspection so we can see exactly what’s inside your ducts before we quote the job. That’s the honest way to do it. For a standard single-family home, expect $350 to $650 for a full system cleaning that covers supply ducts, return ducts, the plenum, and the blower compartment. If construction debris or pest damage requires additional remediation, we’ll show you the photos and hand you a written price before touching a single duct. Some homes with extensive flex duct replacement needs run higher, but you’ll know the number first.
Supply and Return Duct Cleaning
Supply ducts push air into rooms; return ducts pull it back to the system. Both get dirty, but return ducts in San Marcos homes accumulate more because they’re often under negative pressure and pull attic dust through any small gap in the duct joints. We clean both with rotary brush agitation and HEPA vacuum extraction, so debris goes into the containment unit, not back into your living room.
Video Inspection Before and After
Every San Marcos job includes camera footage of your ducts before we start and after we finish. You see the drywall chunks, the dust coating, the kinked flex duct, and then you see the clean interior. That’s the before-and-after proof that matters, and it’s part of every booking, no upsell required.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in San Marcos
We maintain and clean systems built around Honeywell filtration, Aprilaire media cabinets, and standard builder-grade HVAC equipment. Our San Marcos crews stock common filter sizes and replacement flex duct on the truck, so a sagging or kinked section can be corrected the same visit, not scheduled for a follow-up two weeks later. If your home has an Aprilaire air cleaner or Honeywell thermostat with a constant-circulation setting, ask the tech during the walkthrough; we’ll factor filter condition and replacement into the written quote before work starts.
See the difference
Before
After
Before
After
Before
AfterCommon Air Duct Cleaning Problems We See in San Marcos Homes
- Construction debris in new builds. Builders rarely clean HVAC systems before handover, so drywall dust, sawdust, and even drywall screws sit in supply and return ducts of homes in Whisper, Trace, and other new developments. This clogs blower motors and coats evaporator coils within the first year.
- Animal-damaged flex duct in older homes. East-side San Marcos homes from the 1970s through 1990s often have original flex duct in unconditioned attics. Roof rats and squirrels crush or tear through it, and homeowners notice musty vent smells after the first big spring rain.
- Sagging flex duct from attic heat. San Marcos summers push attic temperatures past 130°F. Flex duct that wasn’t strapped properly during original construction sags between joists, restricting airflow and forcing the system to run longer than it should.
- High pollen and dust load from Hill Country winds. Spring brings oak and cedar pollen from the Hill Country, and nearby construction adds fine dust. Systems in San Marcos run most of the year, pulling that debris through the filter and into ducts faster than in cooler cities with shorter cooling seasons.
Pricing for Air Duct Cleaning in San Marcos, TX
Most standard whole-home air duct cleanings in San Marcos run between $350 and $650 for a single-family house up to about 2,500 square feet. Larger two-story homes or systems with heavily contaminated ducts can push toward $800 to $1,200, particularly when construction debris removal or flex duct replacement is involved. Commercial duct cleaning in San Marcos typically ranges from $800 to $2,500 depending on square footage and access. What affects your price? The number of supply and return ducts, whether the plenum needs disassembly for access, and whether we’re pulling out construction scraps versus routine dust. You get a written price before any work starts, and that price does not change at the door. Call (940) 283-6595 for a free estimate.
We Also Serve Cities Near San Marcos
Cardinal Air Duct Austin handles duct cleaning jobs throughout the I-35 corridor. If you’re in Buda, Austin, Manor, or Pflugerville, same team, same Relay Standard booking, same 365-Day Done Right Promise. For full details on our service area, see our Air Duct Cleaning hub page or read more about Air Duct Cleaning in San Marcos right here on this site.
Serving San Marcos, TX - Our Local Coverage Area
We’re based in the San Marcos area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Cleaning in San Marcos
Brand-new homes in San Marcos sit on the front edge of this city’s explosive growth, and most builders do not clean the HVAC system before handing over the keys. Drywall dust, sawdust, loose fiberglass insulation, and even drywall screws end up inside supply and return ducts during framing and finishing. Within the first year, that debris clogs the blower motor, coats the evaporator coil, and gets blown into living spaces as fine white powder. If you’re in a new development like Whisper or Trace and the air smells like drywall or the registers are dusty weeks after move-in, a professional cleaning with HEPA-filtered extraction is the fix. Call (940) 283-6595 and we’ll quote the job with camera inspection first.
Roof rats and squirrels enter attics through small gaps at eaves and rooflines in older San Marcos homes, then chew through flex duct to create nesting sites and travel paths. Crushed, torn, or disconnected ductwork lets conditioned air leak into the attic while pulling attic dust, insulation fibers, and animal dander into the system. Homeowners often notice a musty smell from vents, uneven cooling, or unexplained dust buildup on furniture. Our technicians identify rodent-damaged sections with video inspection, and we can replace the damaged flex duct during the same visit as the cleaning. Call (940) 283-6595 and we’ll schedule a camera inspection.
That musty smell after San Marcos’s first big spring rain usually comes from condensation inside ductwork where warm, humid attic air meets cool conditioned air. In older homes with sagging or torn flex duct, attic moisture seeps into the duct lining, and the smell gets pulled into living spaces. Roof rat or squirrel nesting in a damaged return duct compounds the odor. The real fix is not just an air freshener; it’s cleaning the duct interior and repairing or replacing the compromised sections. We find the source with camera inspection and fix it on the spot. Call (940) 283-6595 for a free estimate.
We clean two-story San Marcos homes through the existing register openings, with no wall demolition. Our technicians run a Rotobrush agitation tool and Nikro HEPA vacuum from each supply and return register, pulling the loosened debris through the duct and directly into the containment unit. A camera inspection before and after shows us if there are blockages or damaged sections that need attention, and we can often access and repair flex duct in the attic without cutting drywall. The whole process is containment-first, so debris never blows back into rooms. Call (940) 283-6595 for a walkthrough and written price.
Yes, cleaning ducts removes the accumulated pollen, dust, and mold spores that have settled inside the system, so they stop recirculating every time your AC runs. San Marcos sits right at the edge of Hill Country cedar and oak pollen territory, and our long cooling season means the system pulls that pollen through the filter and into the ductwork for seven or eight months a year. Removing that buildup, plus installing a fresh high-efficiency filter if your system allows it, meaningfully reduces airborne irritants in the home. Call (940) 283-6595 and mention allergies when you book; we’ll factor filter options into your quote.
Written by Omar Haddad, Owner at Cardinal Air Duct Austin, serving San Marcos since day one with The Relay Visibility Guarantee and the 365-Day Done Right Promise on every job.