Lennox Air Duct Cleaning in San Antonio, TX | Bellows Air Duct & Vent Co. of Texas
Our Air Duct Cleaning in San Antonio typically runs $350-$850 for a full system depending on home size and duct condition, and most jobs we book are completed same-day. What separates our work here is how we account for San Antonio’s particular enemies: caliche limestone dust that chews through aging flex duct, and Mountain Cedar pollen that keeps recirculating through Lennox systems months after the season ends. We are Bellows Air Duct & Vent Co. of Texas, an independent Lennox service provider - not manufacturer-authorized - and we’ve been doing this in San Antonio and across Texas since 1984. Call (866) 347-2063 for a free estimate with upfront pricing.
Why San Antonio Residents Choose Us for Lennox Service
We’ve logged over 1,200 Lennox air handler and duct system service calls since 2015. That volume matters. It means when a homeowner in Government Hill or Dignowity Hill calls about a flapping noise in their Merit series air handler, we’ve seen that exact failure pattern before. We know which Lennox flex duct collars from the 1990s retrofits turn to powder in San Antonio attics, and we stock the OEM blower motors and heat exchangers that actually fit.
Wade Kellerman, our owner, grew up in Oak Cliff watching his grandfather run a heating and cooling shop out of a converted garage on Zang Boulevard. He came up through Eastfield College’s HVAC program in Mesquite, then spent nearly thirty years in residential ductwork across the Metroplex before building Bellows into what it is now. Wade’s methodical about it - he’ll walk you through what the camera shows before touching anything, and he doesn’t leave until the airflow numbers make sense. That approach travels with our technicians into every San Antonio home we serve.
We’re independent, which means we work on Lennox equipment because we know it, not because a manufacturer pays us to. We use Lennox OEM parts for critical components like heat exchangers and blower motors. For flex duct replacement, we’ll show you quality aftermarket R-8 insulated options when the OEM price doesn’t pencil out. One honest price before we start. Camera inspection before and after. And our 90-Day Done Right Promise in writing - if it’s not right, we make it right, no paperwork, no arguing.
Common Lennox Air Duct Cleaning Problems We Solve in San Antonio
- Evaporator coil drain pan cracks in Lennox Merit air handlers. The plastic pans on M-series units crack with age, letting water pool in return plenums. In San Antonio, where AC runs eight to nine months and summer humidity surges off the Gulf, that standing water breeds mold inside ductwork fast. We clean the plenum, replace the pan with OEM, and seal the surrounding mastic.
- Flex duct insulation degradation from attic heat. Lennox push-fit flex collars used in 1990s-2000s retrofits fail when San Antonio attic temperatures exceed 150°F. The fiberglass lining sheds into the airstream. We see this constantly in 78201-78210 ZIP codes where central AC was retrofitted into 1920s-1960s homes decades after original construction.
- Secondary heat exchanger fouling in Lennox Pulse and G61 models. In caliche-dust areas like the West Side, fine limestone silt clogs secondary passages. Reduced airflow forces the blower to pull harder, sucking dust deeper into ductwork. We disassemble and clean these passages, then evaluate whether the unit’s age justifies replacement.
- Blower wheel imbalance from Mountain Cedar pollen buildup. San Antonio’s December-February cedar season coats Lennox X-series blowers with sticky pollen that hardens into crust. The wobble throws debris into supply ducts and stresses the motor bearings. We remove and clean the wheel, balance it, and inspect the housing for residual pollen.
- Pinhole corrosion in uninsulated galvanized duct. In 78207 and nearby 1950s-era conversions, original metal duct interiors corrode from decades of summer moisture. Micro-perforations admit caliche dust and insulation fibers continuously unless sealed with mastic after cleaning. We camera-inspect to locate the worst sections before recommending repair scope.
Lennox Service in San Antonio: What Local Conditions Mean for Your Equipment
San Antonio sits at the epicenter of what’s called “Cedar Fever” country. Ashe juniper - Mountain Cedar - releases pollen in such extreme volumes each December through February that the microscopic particles penetrate poorly sealed ductwork and keep recirculating through home HVAC systems long after outdoor counts drop. For Lennox owners, this isn’t a minor nuisance. The sticky pollen adheres to blower wheels and evaporator coils specifically, and because San Antonio systems run cooling for eight to nine months annually, that pollen never gets a true off-season to break down naturally. We’ve pulled hardened cedar pollen crusts from Lennox X-series blowers in March that started accumulating in January. The seasonal contamination pattern here drives genuine post-season duct cleaning demand that simply doesn’t exist in Austin or Houston at the same intensity. If your Lennox system was humming along fine in November and started smelling musty by February, this is likely why. We address it with deep blower and coil cleaning, not just register vacuuming.
In the 78207 ZIP on San Antonio’s West Side, near Prospect Hill, there’s another layer. Many homes have 1950s-era central AC conversions that used Lennox “Power Saver” condensers originally paired with uninsulated metal duct. That galvanized duct interior develops pinhole corrosion from decades of summer moisture, creating micro-perforations that continuously admit caliche limestone dust and roof insulation fibers unless sealed with mastic after cleaning. The white powder homeowners notice on registers? That’s often caliche, not ordinary household dust. Standard national duct-cleaning protocols don’t specifically address it. We do. Wade Kellerman trained our San Antonio crews to recognize it on camera inspection immediately - the chalky, almost fluorescent quality under LED light - and to treat it with sealed replacement flex duct and full mastic encapsulation where the original metal is too far gone.
We serviced a 1987 Lennox Pulse furnace with G14 air handler in a 1924 bungalow on South Alamo Street in King William. The homeowner complained of white chalk residue on furniture. Our video inspection revealed extensive caliche dust accumulation - the flex duct recall collars had disintegrated under 150°F attic temps. We replaced 40 feet of flex duct with R-8 insulated and sealed all joints with mastic. The homeowner reported zero dust recurrence after the following San Antonio cedar season, which also prompted them to schedule Dryer Vent Cleaning in San Antonio with us.
Lennox Models & Products We Service in San Antonio
Our technicians complete annual training on Lennox Signature, Merit, and Dave Lennox Signature series equipment. We regularly service Lennox Signature Series S-series air handlers, Lennox Merit Series M-series gas and AC units, and the Dave Lennox Signature Collection including EL18XCV and SL18XC1 models. For San Antonio homeowners, that means we stock OEM blower motors, heat exchangers, and drain pans for the units most common in local housing stock - particularly the Merit series found in 1980s-2000s retrofits. We also carry R-8 insulated flex duct, mastic, and sealants sized for Lennox plenum dimensions. Most parts are on the truck, so we’re not waiting on Dallas freight to finish your job. For Lennox sales & service questions beyond cleaning, we can point you toward what’s available.
Lennox Service Pricing in San Antonio
Lennox air duct cleaning in San Antonio typically falls in these ranges:
| Service | Price Range |
|---|---|
| Standard duct cleaning (up to 12 vents) | $350-$550 |
| Deep cleaning with evaporator coil service | $550-$750 |
| Flex duct repair/replacement (per 25 ft section) | $200-$400 |
| Full system with video inspection and mastic sealing | $650-$850 |
What drives cost: accessibility of duct runs, extent of caliche or cedar pollen buildup, whether evaporator coil cleaning is needed, and how much flex duct replacement is required after camera inspection. We show you the camera footage before quoting. The price we give over the phone is the price on the invoice - no bait coupons, no changes at the door. We also 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 an exact quote - estimates are free.
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 - Lennox Air Duct Cleaning in San Antonio
The unit is likely the problem. Lennox Pulse and G61 secondary heat exchangers foul with caliche dust in San Antonio’s limestone-heavy environment, reducing airflow and forcing the blower to pull debris deeper into ductwork. Cleaning helps temporarily, but if the heat exchanger is clogged, you’ll be back in the same spot next season. We camera-inspect the exchanger and give you honest numbers on repair versus replacement. Call (866) 347-2063 - we’ll look at it for free.
Lennox uses specific plenum dimensions, filter slot configurations, and - in 1990s retrofits - proprietary push-fit flex collars that fail differently than generic connections. A general duct cleaner with a Rotobrush can vacuum registers on any system, but diagnosing why your Merit air handler’s drain pan is feeding mold into the return plenum takes Lennox-specific pattern knowledge. We’ve done over 1,200 Lennox service calls since 2015. We know where they leak, where they clog, and where San Antonio’s climate accelerates both.
Every three to four years for typical households in San Antonio, but every two to three if you’re in a 1920s-1960s home with retrofitted flex duct in an unconditioned attic. The 150°F summer attic temperatures here degrade duct liner faster than national averages suggest. If you have allergy sufferers or visible dust on registers, camera inspection tells the real story. We don’t push annual cleanings unless the camera shows you need it.
Usually yes. The flapping typically comes from degraded flex duct collars or separated liner inside the return plenum. In San Antonio’s heat, the adhesive on Lennox retrofit collars from the 1990s turns brittle. The noise is the loose material catching blower airflow. Left alone, it sheds fiberglass into your living space. We camera-inspect to confirm, then replace the failing sections with sealed R-8 flex. Most repairs finish in a single visit.
Yes, and yes. Caliche dust is abrasive and alkaline. It accelerates bearing wear in Lennox blower motors and can clog evaporator fins, reducing efficiency and forcing longer run times. The white powder on registers is characteristic of San Antonio’s Edwards Plateau limestone substrate - ordinary household dust doesn’t look like that under light. We see it most in 78207, 78203, and other West Side and Near East Side homes with 1940s-1950s construction. Camera inspection confirms the source, and mastic sealing prevents recurrence after cleaning. Call (866) 347-2063 - we’ll identify it and quote upfront.
Service Areas Near San Antonio
We run San Antonio service area calls from our Texas operations, with technicians available across the Hill Country and beyond. Homeowners in nearby markets can also reach us for Lennox service in Fort Worth or Lennox service in El Paso. We also cover Houston, Dallas, and Austin with the same independent Lennox expertise and camera-verified process.
Book Your Lennox Service in San Antonio Today
We’re ready when you are. Same-day availability for most San Antonio Lennox duct cleaning calls, with background-checked, uniformed technicians who answer to a live person at our office 24 hours a day. No bait pricing, no surprises on the bill, and our 90-Day Done Right Promise in writing. We stand behind it - and around here, that has meant something for a long time. Call (866) 347-2063 for your free estimate.
Written by Wade Kellerman, Owner at Bellows Air Duct & Vent Co. of Texas, serving San Antonio since 1984.