Whole-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.
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AfterLennox Air Duct Cleaning in Universal City, TX | CleanRun Air Duct Cleaning Schertz
We provide independent Lennox Air Duct Cleaning in Universal City, TX, with pricing delivered in writing before any work begins and a documented photo record of every duct run afterward. The one thing that makes our Lennox work here different is the jet-exhaust particulate infiltration we find near JBSA-Randolph - a contamination pattern our technicians recognize immediately and a generalist crew from Schertz or Cibolo would likely misdiagnose as ordinary household dust. Call (830) 402-5110 for a written estimate.
Why Universal City Residents Choose Us for Lennox Service
We’ve been pulling apart Lennox systems in this market long enough to know the difference between a standard debris load and the soot-tinged buildup that shows up within a mile of the Randolph flight line. Tomas Reyes, our owner, grew up in Queens and learned the trade at Apex Technical School in Long Island City before spending the better part of two decades cleaning plenums and documenting what actually lives inside residential ductwork. He and our crew have worked the Schertz-Universal City corridor for several years now - everything from newer builds off Roy Richard Drive to 1970s ranch homes where the original Lennox flex duct hasn’t been touched since the Carter administration - and we also offer our Dryer Vent Cleaning in Universal City.
We are not affiliated with, authorized by, or sponsored by Lennox. We are an independent duct cleaning crew that services their equipment every day in Universal City and the surrounding area. That independence matters because it means we source OEM Lennox parts when they make sense and high-quality aftermarket equivalents when they don’t - mastic, flex duct, takeoffs, registers - without a manufacturer’s pricing structure dictating the bill. Our license number is published on every proposal, our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews, and every job carries the 365-Day Done Right Promise in writing.
The before photo does the talking. We just bring the camera.
Common Lennox Air Duct Cleaning Problems We Solve in Universal City
- Collapsed flex duct at the collar. The 1960s-1980s ranch homes that dominate Universal City’s housing stock - many built for Randolph AFB personnel - used builder-grade Lennox flex duct that tears or separates at the collar after decades of thermal cycling. Once the connection fails, the Lennox air handler pulls 140-degree attic air and caliche dust straight into the supply stream. We replace the torn flex, seal with mastic, and photograph the repair.
- Caliche-loaded evaporator coils. Universal City’s alkaline soils generate fine dust that coats Lennox coils faster than in Gulf Coast cities with heavier rainfall. A coil choked with caliche fines forces the blower motor to run hotter and longer, spiking energy bills and shortening compressor life. We clean the coil in place or pull it when necessary, with before-and-after photos.
- Jet-exhaust soot infiltration through return chases. Military families on PCS orders cycle through Universal City rentals at rates unmatched elsewhere in the metro. Disconnected return duct joints in these properties draw attic air laced with jet turbine exhaust particulate, which the Lennox system redistributes as blackened supply registers. Our negative-pressure extraction pulls the contamination out, then we seal the chase joints with metal tape and mastic.
- Pinhole leaks in metal trunk lines. Eight to nine months of annual AC operation in Universal City’s climate eventually fatigues the seams and takeoffs on older Lennox metal trunk ductwork. Static pressure drops, far rooms go stale, and the system runs continuously without satisfying the thermostat. We pressure-test, locate the leaks, and seal them.
- Short-cycling from restricted airflow. When multiple failures compound - a dirty coil, collapsed flex, and leaky return - the Lennox unit protects itself by shutting down prematurely. The homeowner feels warm air, hears the compressor kick on and off every few minutes, and assumes the unit needs replacement. Often it needs cleaning and sealing first.
BeforeAfterLennox Service in Universal City: What Local Conditions Mean for Your Equipment
Homes within a mile of the JBSA-Randolph flight line routinely show darkened, soot-tinged supply registers from jet turbine exhaust particulate - a pattern our techs recognize on sight and one that is essentially absent in Schertz or Converse just a few miles away. That means Lennox systems near the base need supply and return duct cleaning more often than the manufacturer’s general guidance suggests.
We were called to a 1970s ranch home off Pat Booker Road near the Randolph flight line where the Lennox Merit Series air handler was short-cycling and the supply registers were visibly sooty. Our tech pulled the flex runs, found two disconnected collars and a caliche-dusted evaporator coil, then sealed the joints, cleaned the coil, and replaced the torn flex. The homeowner said the house finally smelled neutral and the Lennox unit stopped running nonstop.
The South Central Texas climate pushes enormous air volumes through this aging ductwork for roughly 8-9 months per year. Combined with caliche-heavy soils that clog media filters faster than humid coastal regions, Universal City Lennox systems operate under conditions the original engineers in Marshalltown, Iowa never modeled. Our Lennox sales & service approach accounts for that local reality in every scope we write.
Lennox Models & Products We Service in Universal City
We clean and service the full range of Lennox residential equipment found in Universal City service area homes:
- Merit Series: 14ACX, ML14XC1 - common in entry-level builds and military housing; straightforward coil-and-duct configurations that respond well to thorough cleaning
- Elite Series: XC21, XC25 - two-stage and variable-capacity systems where clean ductwork is essential for the staging logic to function correctly
- Dave Lennox Signature Collection: SL28XP, SLP98V - premium equipment with tight static-pressure tolerances; even minor duct leakage or coil loading degrades efficiency ratings significantly
- CompleteHeat and 1980s builder-grade units: still running in original Randolph-area homes; we evaluate whether cleaning and sealing buys useful life or if replacement is the honest call
Our trucks stock OEM Lennox filters, coils, and blower components alongside aftermarket mastic, flex duct, and takeoffs from Guardsman and Aprilaire. For Universal City jobs, that local inventory means we don’t burn a day waiting on parts from Dallas.
Lennox Service Pricing in Universal City
Whole-system Lennox air duct cleaning in Universal City typically runs $395-$675 for a standard single-system residential job, depending on duct configuration, contamination level, and whether the evaporator coil requires separate cleaning. Duct sealing as an add-on generally adds $180-$340. We deliver one flat price per system, agreed in writing before any panel comes off - Haven Standard Clause 1. No per-vent pricing, no upsell after arrival.
Your written estimate includes full negative-pressure extraction of all supply and return runs, register and boot cleaning, a visual coil inspection, and the Documented Photo Record delivered before we leave. Free estimates. Free Second Opinion on any competitor’s written quote. Call (830) 402-5110 and we’ll put our number next to theirs.
Serving Universal City, TX - Our Local Coverage Area
We’re based in the Universal City 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 Universal City
The black residue is likely jet turbine exhaust particulate, not ordinary household dust. Homes near the JBSA-Randolph flight line draw this soot into return chases through attic leaks, then the Lennox system redistributes it onto every supply register. Surface cleaning the registers doesn’t stop the source; the return ductwork needs sealing and the system needs negative-pressure extraction. Call (830) 402-5110 for a written scope and price.
It depends on your timeline and whether you’re responsible for the condition at move-out. Military landlords in Universal City sometimes deduct from deposits for HVAC neglect documented at inspection. More immediately, a dirty Lennox system runs less efficiently for every month you remain, and the soot-tinged registers are a visible red flag to incoming inspectors. We can assess and quote in writing; you decide.
Yes. The alkaline caliche fines in this region’s soil are finer and more adhesive than the organic debris dominant in humid coastal climates. Lennox evaporator coils in Universal City load up faster, restrict airflow sooner, and force the blower to work harder. We see the difference when we pull coils from homes here versus identical models in Houston or Corpus Christi. Coil cleaning is often the single most impactful service for restoring Lennox system efficiency in this market.
We can, and we do regularly in the 1960s-1980s ranch homes that make up most of Universal City’s housing stock. Disconnected collars are a failure mode we expect to find. Our scope includes reconnecting or replacing the damaged flex, sealing with mastic, and verifying airflow balance before we finish. The system cannot be properly cleaned with open attic leaks pulling unfiltered air.
No. Routine maintenance including duct cleaning does not void Lennox manufacturer warranties. What can void coverage is unlicensed work, incorrect refrigerant handling, or physical damage to components. Our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews, and we document every step of the work. If you have a specific warranty concern, we’ll review your documentation before starting and note any conditions in writing.
Service Areas Near Universal City
We run Lennox service calls throughout the northeast San Antonio corridor: Lennox service in Schertz, Lennox service in Cibolo, plus Selma, Converse, and Live Oak. Each market has its own ductwork patterns - Schertz’s newer subdivisions with tighter duct sealing, Cibolo’s mix of recent construction and older ranch properties - but the caliche dust and extended cooling season affect every system in the region.
Book Your Lennox Service in Universal City Today
Call (830) 402-5110 to schedule a free estimate. A live person answers, 24/7. We’ll deliver a written price before any work starts, clean every duct run with Rotobrush and Nikro equipment under negative pressure, and leave you with a Documented Photo Record of what we found and what we did. The 365-Day Done Right Promise backs every job in writing.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Schertz, serving Universal City and the northeast San Antonio area since 2013.