Fast, Reliable HVAC Cleaning Across San Antonio
HVAC cleaning in San Antonio typically runs $280-$680 for a complete system service, and most jobs are finished in a single visit. Bellows Air Duct & Vent Co. has been sending crews down I-10 from Houston to San Antonio for over 42 years, and we know the local conditions that dictate what your system actually needs.
San Antonio’s climate and housing stock create problems you won’t find in Dallas or Houston. Your AC runs eight or nine months straight. Summer attic temperatures north of 150°F cook flex duct liner into brittle fragments. And that white film near your vents? It’s not ordinary household dust. Call us at (866) 347-2063 for a free estimate, or keep reading to understand what you’re really dealing with.
Why Bellows Air Duct & Vent Co. of Texas Is San Antonio’s Preferred HVAC Cleaning Company
We’ve built our reputation on showing up when we say we will and leaving the job done right. San Antonio homeowners don’t call us for flashy trucks or coupon gimmicks. They call because their neighbor in Alamo Heights recommended us after we cleaned a system choked with cedar pollen, or because a Terrell Hills customer told them we were the ones who finally solved a dust problem three other companies missed.
Our HVAC Cleaning team carries camera inspection equipment on every truck. You see the before and after with your own eyes. No claims, no trust-me language. Just a visual record stored on our system if you ever need to reference it.
Calls to our office route to a live person, 24 hours a day. Not an app. Not a callback queue. A real person who can dispatch a background-checked, uniformed technician to your San Antonio home, usually within the same day you call.
Our 90-Day Done Right Promise applies to every job in San Antonio. If something isn’t right, we return at no charge. No paperwork to file, no argument to win. We stand behind it because we’ve stood behind our work since 1984.
Our HVAC Cleaning Services in San Antonio
Evaporator Coil Cleaning
The evaporator coil sits in your air handler, and in San Antonio it works harder than coils in most of the country. Eight months of continuous cooling means eight months of condensation collecting dust, pollen, and biological growth. During cedar season, Ashe juniper pollen particles are small enough to pass through standard filters and lodge directly on the coil’s fins, forming a mat that restricts airflow and drives up your electric bill.
Our crew recently cleaned an HVAC system in a 1950s bungalow on West Commerce Street in the 78207 ZIP code. The homeowner reported constant dust despite new filters. We found the evaporator coil caked with caliche limestone dust - a fine white powder stirred by nearby construction - that had bypassed the filter and was coating the blower. Using a Rotobrush and HEPA vacuum, we removed the buildup and applied a coil treatment to prevent re-adhesion. Camera footage showed the difference. The homeowner’s system ran quieter and cooled faster that same afternoon.
A typical evaporator coil cleaning in San Antonio runs $180-$340.
Blower Cleaning
The blower motor and wheel sit downstream from your filter, which means everything that gets past it ends up here. In San Antonio’s older homes, particularly the 1920s-1960s masonry bungalows and Victorian-era houses in King William, Dignowity Hill, and Government Hill, that’s a significant amount of debris. Central AC was retrofitted decades after original construction, often with flex duct routed through unconditioned attics. That attic air, carrying disintegrated duct liner and caliche dust, circulates straight through the blower assembly.
A dirty blower wheel can’t move its rated airflow. Your system runs longer. Rooms stay unevenly cooled. And the motor works harder, shortening its lifespan. We remove the blower assembly, clean the wheel and housing with professional-grade equipment, and verify performance before we leave. Most blower cleanings in San Antonio fall between $160-$290.
Condenser Cleaning
Your outdoor condenser coil in San Antonio battles cottonwood fluff, construction dust, and the same caliche particulate that affects your indoor system. A dirty condenser can’t reject heat properly. Head pressures climb. Compressors strain. In August, when San Antonio temperatures push 105°F, a fouled condenser is a breakdown waiting to happen.
We wash the coil with proper foaming cleaner, straighten damaged fins, and clear debris from the cabinet base. The service takes about 90 minutes and typically costs $140-$260. If you’re already having indoor work done, we’ll bundle it at a reduced rate.
Air Handler Cleaning
The air handler is the central station of your HVAC system: blower, coil, drain pan, and filter slot all in one cabinet. In San Antonio homes with aging retrofitted ductwork, the air handler often becomes the collection point for everything wrong upstream. We’ve opened air handlers in 78203 and 78207 homes to find drain pans clogged with a paste of limestone dust and condensate, blower cabinets lined with disintegrated flex duct liner, and coils so fouled the system was icing up in July.
Our air handler cleaning includes full coil treatment, blower removal and cleaning, drain pan and line flush, and cabinet sanitizing. Typical range in San Antonio: $320-$550 depending on system size and accessibility.
Coil Treatment
After mechanical cleaning, we apply a protective coil treatment that helps prevent re-adhesion of dust and biological growth. In San Antonio’s humid climate, this matters. Summer Gulf moisture surges push humid air into poorly sealed duct systems, creating recurring mold-growth conditions. A treated coil stays cleaner longer, maintains its heat transfer efficiency, and doesn’t become a petri dish between service visits. Coil treatment adds $45-$85 when performed with a cleaning, or $120-$180 as a standalone service.
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 Antonio
We clean and service equipment from every major manufacturer, and we stock common parts for faster turnaround on San Antonio jobs. Our technicians train on Rotobrush and Nikro cleaning systems - the same equipment serious HVAC contractors specify for their own work - and we carry Honeywell media filters and electronic air cleaner components on our trucks. If your system uses Aprilaire humidification or filtration accessories, we service those too. No waiting on parts shipments from Dallas. No return visits because we didn’t bring what the job required.
Common HVAC Cleaning Problems We See in San Antonio Homes
- Cedar pollen contamination during winter months. Ashe juniper releases pollen in extreme volumes each December through February. The microscopic particles penetrate poorly sealed ductwork and continue recirculating long after outdoor counts fall. San Antonio sits at the epicenter of this phenomenon - what locals call “Cedar Fever” - and the seasonal contamination pattern drives genuine post-season duct cleaning demand here that simply doesn’t exist in neighboring cities at the same intensity.
- Aging flex duct shedding liner debris. The 78201-78210 ZIP codes are dominated by homes where central AC was retrofitted decades after original construction. Flex duct routed through 150°F attics degrades faster than in newer subdivisions. The liner breaks down, fragments enter the airstream, and your filter catches only the largest pieces.
- Caliche limestone dust accumulation. In West Side and Near East Side homes, 1940s-1950s houses that had window units replaced with central systems in the 1980s frequently have undersized, improperly sealed flex duct caked with fine caliche limestone dust. This chalky white particulate, stirred continuously by construction activity on the Edwards Plateau limestone substrate, resists standard vacuuming and requires specialized agitation equipment.
- Humidity-driven biological growth. San Antonio’s summer Gulf moisture surges push humid air into aging duct systems, creating mold-growth conditions inside the ductwork itself. This isn’t a surface wipe situation. It requires mechanical removal, sanitizing, and often duct sealing to prevent recurrence.
Pricing for HVAC Cleaning in San Antonio, TX
We show you the full price before we start. No bait coupons, no add-ons at the door. Here’s what HVAC cleaning costs in the San Antonio market:
| Service | Typical Range |
|---|---|
| Evaporator Coil Cleaning | $180 - $340 |
| Blower Cleaning | $160 - $290 |
| Condenser Cleaning | $140 - $260 |
| Air Handler Cleaning (complete) | $320 - $550 |
| Coil Treatment (with cleaning) | $45 - $85 |
| Full System HVAC Cleaning | $280 - $680 |
Factors that move you within these ranges: system size, accessibility (attic installations in older San Antonio homes take longer), and contamination level. A system clogged with caliche dust or cedar pollen residue requires more time and more agitation cycles than routine maintenance cleaning.
We offer a permanent 5% Senior and Veteran discount, and our $89 Seasonal Tune-Up can identify whether you need full cleaning before you commit to the larger service. Call (866) 347-2063 for a free estimate - we’ll give you the exact number for your specific system.
We Also Serve Cities Near San Antonio
Our crews regularly work in San Antonio and the surrounding communities, including Alamo Heights, Terrell Hills, Kirby, and Windcrest. Same pricing, same 90-Day Done Right Promise, same live-answer phone support. Whether you’re in a 1950s ranch in Terrell Hills or a historic home in Alamo Heights, we know the local housing stock and the conditions that affect your system.
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.
FAQs - HVAC Cleaning in San Antonio
The Ashe juniper pollen that causes Cedar Fever is microscopic enough to penetrate poorly sealed ductwork and lodge in your evaporator coil and blower, where standard duct cleaning doesn’t reach. Duct cleaning alone won’t solve the problem if the internal HVAC components are still contaminated. We recommend coil and blower cleaning as part of your cedar-season service - call (866) 347-2063 for an exact quote, estimates are free.
It’s most likely caliche limestone dust, a fine white particulate stirred by construction activity on San Antonio’s Edwards Plateau limestone substrate. In homes with 1980s retrofitted flex duct, particularly in 78207 and 78203, this dust bypasses standard filters and accumulates at vent terminations. Standard vacuuming won’t remove it from ductwork; it requires mechanical agitation with equipment like our Rotobrush system. Call us for a camera inspection and we’ll show you exactly what’s in your system.
Homes in Dignowity Hill and similar 1920s-1960s San Antonio neighborhoods typically need HVAC cleaning every 2-3 years, more frequently if you have pets, recent construction nearby, or occupants with allergies. The aging flex duct common in these retrofitted systems degrades faster than modern hard duct, generating more internal debris. We also recommend annual filter changes with high-quality media, not the fiberglass panels sold at hardware stores. Call for a free assessment of your specific system condition.
Yes, over time. Cedar pollen mats on evaporator coils, restricting airflow and causing the compressor to work harder. It accumulates in blower wheels, throwing them out of balance and stressing bearings. And it clogs condensate drains, leading to overflow and water damage. The pollen itself is organic material that can support mold growth once moisture is present. A thorough coil and blower cleaning after cedar season protects your equipment and your indoor air quality. We offer seasonal scheduling - call to set it up.
Standard vacuum-only duct cleaning often leaves caliche dust behind because the particles are fine and electrostatically charged, causing them to cling to duct surfaces. Our process uses mechanical agitation with Rotobrush equipment followed by HEPA vacuum extraction, which dislodges and captures this specific contaminant. We’ve developed this protocol from repeated work in San Antonio’s West Side and Near East Side homes where caliche is a known issue. Camera verification before and after confirms the removal. Call (866) 347-2063 for a free estimate - we’ll show you what standard cleaning missed.
Ready to get your San Antonio HVAC system cleaned right? Call Bellows Air Duct & Vent Co. of Texas at (866) 347-2063 for a free, no-obligation estimate. We’ll give you one honest price before we start, show you camera proof of the results, and back everything with our 90-Day Done Right Promise in writing. No bait coupons. No surprises on the bill. Just a square deal from a company that’s been doing this since 1984.
Written by Wade Kellerman, Owner at Bellows Air Duct & Vent Co. of Texas, serving San Antonio since 1984.