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 San Antonio, CA | Kestrel Air Duct Cleaning
We provide independent Lennox Air Duct Cleaning in San Antonio, and the one thing that sets our work apart here is simple: we know what this city’s caliche dust and 160°F attics do to Lennox equipment. Most homes run between $450 and $900 for a full Lennox system cleaning, and you’ll get a written price before we touch a single vent. Call (469) 972-3151 for a free estimate. We’re not a Lennox dealer or authorized service center, but we’ve worked on their systems in San Antonio long enough to know exactly where they fail and why.
Why San Antonio Residents Choose Us for Lennox Service
Dale Whitmore, our owner, spent his early twenties doing general HVAC maintenance before realizing the duct side was where the real neglect lived. He trained at Los Angeles Trade-Technical College and has been cleaning ducts for well over a decade. That background matters when you’re dealing with Lennox equipment in San Antonio, because the problems here aren’t generic. They’re specific to how Lennox builds their air handlers and flex duct, and how this city’s climate punishes them.
We stock OEM Lennox gaskets, cabinet seals, and mastic, plus quality aftermarket flex duct and liner materials where they meet or exceed the original spec. When we open a Lennox air handler in a San Antonio attic, we already know what we’re likely to find. That saves you time and money. We’re also the company that answers the phone with a live person, 24/7, and puts a 365-Day Done Right Promise in writing on every job. No voicemail queues. No price changes at the door.
Common Lennox Air Duct Cleaning Problems We Solve in San Antonio
- Flex-duct liner delamination in attic runs. San Antonio attics routinely hit 140-160°F in summer. That heat breaks down the inner liner of Lennox flex duct, and the foil jacket often separates at the plenum takeoff. Insulation fibers end up in your living space. We find this constantly in 1970s-1990s tract homes around Leon Valley and Converse.
- Failed mastic at cabinet connections. The same heat cycling cracks duct tape and mastic on Lennox sealed-combustion and high-efficiency cabinets. Once that seal fails, return-side leaks pull caliche dust and attic air straight into the blower compartment. Your system is filtering air it already paid to cool.
- Return-air chase contamination on variable-speed systems. Lennox variable-speed blowers ramp to high static pressure. A partially disconnected or crushed return trunk in a slab-on-grade home pulls unfiltered attic air through every single cycle. We see this in older rigid duct sections that shifted with San Antonio’s Vertisol clay soils.
- Evaporator coil fouling on matched Lennox systems. Calcium carbonate dust from San Antonio’s construction boom binds to wet coils during the 9-10 month cooling season. Capacity drops, runtimes climb, and the compressor works harder than it should. Coil cleaning is almost always needed by the time we get the call.
- Mold colonization in attic supply ducts. Spring and September-October humidity creates condensation where cold conditioned air meets improperly sealed joints. That’s a documented local problem in San Antonio, not a hypothetical. We address it with professional-grade negative-air extraction and HEPA filtration.
Lennox Service in San Antonio: What Local Conditions Mean for Your Equipment
Here’s the thing about San Antonio that most duct companies never mention: the city sits on a caliche-rich limestone substrate, and the constant construction expansion stirs fine white calcium carbonate dust into the air year-round. That dust infiltrates home envelopes and loads ductwork with abrasive particulate unlike anything you’d find in Austin or Houston. Now add AC systems that run continuously for 9-10 months to fight 95-100°F summers. San Antonio ducts accumulate debris at a pace that makes multi-year cleaning intervals genuinely risky for indoor air quality, not just a contractor upsell.
For Lennox owners specifically, the slab-on-grade construction pattern makes it worse. Every Lennox air handler and most of the duct trunk in these homes sits in an attic that can hit 160°F. That heat cooks factory-installed flex duct and mastic far faster than the same system would age in a neighboring city. Which is why we treat attic duct sealing and liner inspection as a standard part of any Lennox cleaning here, not an add-on. If you’re in Universal City, Converse, or Schertz, this applies to you directly.
In Universal City, we pulled the Lennox EL296V air handler apart on a 1990s slab home near the base and found the return trunk mastic cracked wide open at the cabinet. Caliche dust and pet dander from at least three PCS turnovers had packed into the blower wheel. We sealed the return with OEM gasket and mastic, cleaned the evaporator coil and blower, and repaired two crushed flex runs in the attic. The homeowner said the musty smell that greeted every new tenant was gone by the next day. That’s what we mean when we say we know this city’s Lennox failures.
Lennox Models & Products We Service in San Antonio
We work on the full Lennox range: Dave Lennox Signature Collection units like the SL280V and SLP98V, Elite Series models like the EL296V and EL18XCV, and Merit Series equipment like the ML180 and ML14XC1. We also service Lennox Healthy Climate air filtration and purification systems during a duct cleaning, since a clean set of ducts doesn’t help much if the filtration media is loaded with the same caliche dust we just removed.
On parts, we’re straightforward. OEM Lennox gaskets, cabinet seals, and mastic where fitment matters. Aftermarket flex duct and liner materials where they meet or exceed original spec and save you money. When a Lennox air handler or coil is more than 12-15 years old and showing rust-through or cracked drain pans, we’ll show you the video and give you an honest repair-or-replace call rather than pushing a patch that won’t last. For Lennox sales & service needs beyond duct cleaning, we can point you in the right direction.
Lennox Service Pricing in San Antonio
Most Lennox air duct cleaning jobs in San Antonio run between $450 and $900 for a full system, depending on home size, the number of returns, and how much contamination has built up. Flex duct repair and evaporator coil cleaning are priced separately and quoted in writing before work starts. You’ll know the exact number before we unload a single tool. Here’s what typically moves the price:
- Home size and duct count. A 1,400 square foot slab home in Leon Valley costs less than a 3,200 square foot two-story in Stone Oak.
- Contamination level. Caliche dust, pet dander from multiple prior tenants, and construction debris all add time.
- Coil condition. If the evaporator coil is fouled, that’s a separate cleaning step with its own labor.
- Attic access. Some San Antonio attics are tight. That’s just reality.
Call (469) 972-3151 and we’ll give you a free estimate over the phone, then back it up in writing before work begins. That’s the Kingswell Guarantee, and it’s been the same since 2004.
Serving San Antonio, FL - Our Local Coverage Area
We’re based in our San Antonio service 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
San Antonio Dryer Vent Cleaning aside, collapsed flex duct is a repair issue, not a cleaning issue. In San Antonio’s 140-160°F attics, the inner liner of flex duct degrades and the foil jacket separates, which restricts airflow and can pull attic air into the system. We’ll show you photos or video from the attic, explain what needs replacing, and give you a written price before doing any work. Call (469) 972-3151 for an inspection.
Caliche dust is fine calcium carbonate, and it binds to wet evaporator coils during the long cooling season. Over months, that coating insulates the coil, reduces heat transfer, and forces your Lennox compressor to run longer and hotter. We clean coils as a standard part of our full system service, and we’ll show you before-and-after photos so you know it was actually done.
Yes, especially near Joint Base San Antonio. Homes in Universal City, Converse, Schertz, and Live Oak change occupants every 2-3 years, and cleaning histories are rarely passed along. We routinely find ducts packed with layered caliche dust, pet dander from multiple prior tenants, and construction debris from surrounding spec-home building. A full cleaning before you move furniture in is the smartest time to do it. Call (469) 972-3151 and we’ll schedule it around your move-in window.
No. Duct cleaning performed by a professional using negative-air extraction and rotary brush agitation does not void your Lennox equipment warranty. The warranty covers manufacturing defects in the equipment. It does not cover neglect of the duct system attached to it. We use Rotobrush, Nikro, and Abatement Technologies equipment, which is what professional duct cleaning looks like. If you have a specific warranty question, we’ll help you understand what’s covered.
Yes. We inspect and service Lennox Healthy Climate filtration and purification systems as part of a full duct cleaning. If the media is loaded, we’ll show you and replace it with the correct spec. We also offer Honeywell, Aprilaire, and Guardsman filtration products if you want to maintain clean air between service visits. Call (469) 972-3151 and we’ll walk you through what your system needs.
Service Areas Near San Antonio
Our San Antonio service area covers the neighborhoods ringing Joint Base San Antonio and the surrounding region. We work throughout San Antonio service area communities including Universal City, Converse, Schertz, Live Oak, and Leon Valley. If you’re further afield, we also serve Lennox service in San Diego and Lennox service in Dallas through our independently owned and operated locations. Each one operates under the same Kingswell Guarantee.
Book Your Lennox Service in San Antonio Today
Call (469) 972-3151 and you’ll get a live person on the line, not a voicemail queue. We’ll give you a straight answer on pricing, schedule a visit in a defined arrival window, and put the 365-Day Done Right Promise in writing before we start. Clean ducts, straight answers, price upfront - that’s the whole deal.
Written by Dale Whitmore, Owner at Kestrel Air Duct Cleaning, serving San Antonio since 2004.