Fast, Reliable Air Duct Cleaning Across San Marcos
Air duct cleaning in San Marcos typically runs $350-$850 for a full residential system, with most jobs completed in a single visit by our background-checked technicians. We serve the full 78666 and 78667 zip codes, from the apartment corridors near Texas State University to the acreage properties west of town, and we answer our phones live 24 hours a day at (866) 347-2063.
We’ve been driving to San Marcos since 1984, long before the Hays County growth corridor filled in. Our trucks carry Rotobrush and Nikro equipment sized for everything from compact student rentals off Thorpe Lane to detached workshops with 14-foot doors and commercial-grade flex-duct runs. San Marcos averages over 220 days of air conditioning use per year, and that constant recirculation means whatever’s in your ducts stays in your air. We don’t think that’s something to wait on.
Why Bellows Air Duct & Vent Co. of Texas Is San Marcos’s Preferred Air Duct Cleaning Company
San Marcos homeowners know the difference between a company that shows up once and one that keeps coming back because the job wasn’t finished. Our 90-Day Done Right Promise means if it’s not right, we return at no charge with no paperwork required. That promise is stamped on every job, and it’s why we’ve built a strong local reputation across Hays County over four decades.
Calls to our office are answered by a live person, not a voicemail tree, 24 hours a day. When a San Marcos customer calls about cedar pollen clogging their returns in January or mold smell near the river corridor in July, they reach someone who can dispatch a crew that day. Most San Marcos jobs are completed in a single visit because our technicians arrive with the right equipment for the property type, whether that’s a 1990s apartment flex-duct system or a rural workshop with oversized runs.
Our pricing is disclosed before we lift a single tool. The number on the phone is the number on the invoice. No bait coupons, no price changes at the door. For San Marcos homeowners who’ve been burned by low-bid operators before, that’s the square deal they’re looking for.
Our Air Duct Cleaning Services in San Marcos
Residential Duct Cleaning
San Marcos’s housing stock splits into two distinct categories, and we clean both. Near Texas State, the high-turnover rental market means flex-duct systems in buildings from the 1990s and 2000s often haven’t been serviced across multiple tenant cycles. We find cedar pollen stratified in visible layers, pet hair from successive renters, and disconnection points where quick construction never held up. In newer master-planned subdivisions pushing into the 78666 outskirts, post-build drywall dust and debris need thorough extraction before the system settles into normal use. Our Air Duct Cleaning team uses camera inspection before and after every residential job, so you see what was there and what we removed.
Commercial Duct Cleaning
San Marcos’s commercial base includes retail along Interstate 35, medical offices serving the county, and the service businesses that support Texas State’s 38,000 students. Commercial systems run harder and longer, with rooftop units and larger trunk lines that require professional-grade Nikro vacuums and Rotobrush systems. We schedule around business hours, disclose all pricing upfront, and provide the same camera-verified documentation that our residential customers receive.
Supply Duct Cleaning
Supply ducts push conditioned air into your living spaces, and in San Marcos they’re working overtime. With AC running more than 220 days annually, any contamination in supply lines recirculates constantly. Near the San Marcos River springs, where humidity stays elevated year-round, we’ve found supply boots with microbial growth that standard cleaning misses. Our process includes HEPA vacuuming and, where needed, targeted sanitizing to address what the Hill Country’s unique moisture conditions create.
Return Duct Cleaning
Return ducts pull air back to the HVAC unit, and they’re the first collection point for San Marcos’s extreme allergen load. From December through February, mountain cedar pollen from the Balcones Escarpment enters return grilles in concentrations that standard filters can’t capture. We inspect returns with video equipment that navigates the full run, identifying crimps, disconnections, and buildup that restrict airflow and force your system to work harder.
Full System Cleaning
Our most thorough service for San Marcos properties, Full System Cleaning addresses supply ducts, return ducts, trunk lines, and the air handler in one coordinated visit. This is the service we recommend for acreage properties west of San Marcos that haven’t been cleaned in a decade or more, and for any home where occupants experience persistent allergy symptoms despite filter changes. One honest price, shown before we start. Most Full System jobs in San Marcos are completed in a single day.
Video Inspection
Every Bellows job includes camera inspection, but we also offer standalone Video Inspection for San Marcos homeowners who want to assess their system before committing to full cleaning. Our equipment navigates the wider, longer flex-duct runs common in rural properties, and the smaller rigid ducts in university-area apartments. You see what we see, and we explain what it means without pressure to buy.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
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 clean ductwork connected to every major HVAC brand, and we stock parts and accessories from Honeywell and Aprilaire for San Marcos customers who need filtration upgrades or humidifier maintenance alongside their cleaning. Our Rotobrush and Nikro cleaning equipment is the same specification that serious HVAC contractors specify for their own jobs. When we find a component issue during cleaning, we can often address it on the spot rather than scheduling a return trip. That’s part of getting it done in one visit.
Common Air Duct Cleaning Problems We See in San Marcos Homes
- Cedar pollen stratification in returns. From December through February, mountain cedar pollen from the Balcones Escarpment enters San Marcos homes in volumes that layer visibly inside ductwork. Standard filters clog quickly, and the excess pushes deep into returns where only professional extraction removes it.
- Moisture-related microbial growth near river corridors. The constant 72°F spring water from the San Marcos River creates humidity conditions that drier Hill Country cities farther west simply don’t experience. Condensation inside ductwork promotes mold and mildew, particularly in crawl space and basement runs.
- Crimped and disconnected flex-duct in rental properties. The student-rental market near Texas State produced waves of quickly-built apartments with flex-duct systems that weren’t designed for decades of hard use. Crimping reduces airflow, disconnections blow conditioned air into attics, and neither problem is visible from the living space.
- Post-construction debris in newer subdivisions. Growth pushing into the 78666 outskirts brings fresh construction with drywall dust, wood particulates, and insulation fragments that standard HVAC startup cleaning misses. These particles circulate for years if not professionally extracted.
Pricing for Air Duct Cleaning in San Marcos, TX
Most San Marcos homeowners want to know what this costs before they call, so here’s what we see in this market:
| Service | Typical Range in San Marcos |
|---|---|
| Standard residential duct cleaning (up to 10 vents) | $350-$550 |
| Full System Cleaning with video inspection | $600-$850 |
| Standalone Video Inspection | $150-$250 |
| Dryer vent cleaning (add-on or standalone) | $125-$225 |
| Commercial system cleaning | $800-$2,000+ |
What moves a job toward the higher end: properties with more than 10 vent runs, detached workshops or outbuildings with additional ductwork, significant contamination requiring extra extraction time, or access issues like crawl spaces with limited entry. We disclose the full price before starting, and we honor our standing offers: $50 off any repair over $250, free second opinion on any written estimate, $89 seasonal tune-up, and a permanent 5% senior and veteran discount. Call (866) 347-2063 for a free estimate with no obligation.
We Also Serve Cities Near San Marcos
Our crews regularly travel the Hays County corridor to serve San Marcos neighbors in Kyle, Buda, Shady Hollow, and Canyon Lake. Same equipment, same upfront pricing, same 90-Day Done Right Promise. If you’re between San Marcos and one of these communities, call and we’ll confirm travel scheduling.
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 - Air Duct Cleaning in San Marcos
We recommend scheduling duct cleaning in late February or early March, after peak cedar season ends but before summer AC demand begins. Waiting until pollen loads are at maximum means your system recirculates concentrated allergens for months, and we’ve found returns in San Marcos properties packed with layered pollen that standard filters never caught. Call (866) 347-2063 to book before the spring rush.
Yes. Our trucks carry Rotobrush systems with heavy-duty extenders and commercial-grade HEPA vacuums sized for workshop and outbuilding ductwork. Out near the rural acreages west of the 78666 zip code, we cleaned a detached workshop’s duct system that had a 14-foot oversized door with heavy-duty springs and a commercial-grade opener. The homeowner wanted it done in one trip, so we used our Rotobrush system to extract layered cedar pollen and construction debris from the flex-duct runs, finishing with a HEPA vacuum to ensure no residual particles were left behind for his livestock and woodworking equipment. Call (866) 347-2063 and we’ll confirm your setup before we dispatch.
We can often repair localized crimping and reconnect separated joints during the same cleaning visit, using camera inspection to identify exactly where the problem sits. Full replacement is only necessary when flex-duct has deteriorated beyond repair, which we determine together based on what the video shows. Our upfront pricing includes any repair work we identify, so there’s no surprise if we find more than expected. Call for a free inspection.
We adjust our cleaning protocols for the high-humidity condensation conditions near the river springs, using extended drying passes and, where appropriate, EPA-registered sanitizers that address microbial growth without leaving moisture pockets behind. Standard residential cleaning that doesn’t account for this humidity can actually worsen the problem by introducing water and leaving it to sit. We’ve learned that difference from decades of working San Marcos properties. Call (866) 347-2063 to discuss your specific situation.
Most 15-year neglect cases in San Marcos are completable in a single visit because we arrive with equipment scaled for heavy contamination and oversized runs. The exceptions are rare: structural duct damage requiring repair, or access limitations we didn’t know about. That’s why we ask detailed questions when you call and send camera equipment to assess before we quote. Our goal is always one trip, and we hit it on the vast majority of San Marcos jobs. Call (866) 347-2063 for a free estimate.
Written by Wade Kellerman, Owner at Bellows Air Duct & Vent Co. of Texas, serving San Marcos since 1984.