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 Seguin, TX | CleanRun Air Duct Cleaning New Braunfels
Independent Lennox Air Duct Cleaning in Seguin and repair typically runs $380-$680 for a complete residential system, depending on duct layout and whether coil treatment or sealing is needed. What separates our Lennox work here from standard duct cleaning is this: Seguin’s position at the eastern edge of the mountain cedar belt and along the Guadalupe River floodplain creates contamination pathways - flood moisture in crawl spaces, pollen loads in returns - that show up differently in Lennox systems than in other brands. We map those pathways before we quote. Call (830) 549-6847 for a written estimate with no per-vent pricing.
Why Seguin Residents Choose Us for Lennox Service
Tomas Reyes, our owner, learned to read ductwork at BOCES Westchester - not to eyeball it, but to measure static pressure, trace airflow, and spot where a return drop has separated from its plenum before the homeowner smells the problem. That training shows up in how we handle Lennox systems across Seguin. We’ve cleaned and repaired thousands of Lennox units across Guadalupe County, from Merit-series furnaces still running in 1990s tract homes to Dave Lennox Signature Collection air handlers in newer commuter subdivisions.
Our technicians keep common Lennox duct and coil parts on the truck. Not everything needs an OEM stamp - plenum gaskets, mastic, flex duct, and most hardware we install from quality aftermarket sources that meet or exceed original spec. OEM markup on duct components adds cost without performance benefit. What we won’t do: quote a standard cleaning on a river-adjacent system without running moisture checks first. Haven Standard Clause 1 means the written price arrives before any work starts. The photo record arrives before we leave.
Lennox sales & service across Seguin and the surrounding corridor.
Common Lennox Air Duct Cleaning Problems We Solve in Seguin
- Fiberglass liner degradation in metal trunk lines. Older Lennox systems in Seguin’s pre-WWII downtown homes and 1960s-1980s conversions used metal trunks with fiberglass duct liner. Years of attic heat cycling in Guadalupe Corridor humidity cause that liner to shed into the airstream. We remove degraded liner and re-line with closed-cell insulation where the trunk is structurally sound.
- Biological growth on cased A-coils. Lennox evaporator coils in cabinet-style installations accumulate mold when return ducts in pier-and-beam crawl spaces pull in flood-adjacent moisture. This is not routine dust. We treat the coil with EPA-registered sanitizer and address the moisture source before sealing the plenum.
- Collapsed return-air chases. Lennox upflow air handlers in older central-city Seguin homes often sit on return chases that separate at the plenum connection, pulling crawl-space debris and fibrous insulation into the blower. Our video inspection catches this before we quote - because brushing a separated duct is wasted labor.
- Variable-speed fault codes from high static pressure. Lennox variable-speed air handlers with dirty returns or collapsed ductwork climb above their design static-pressure setpoint and throw nuisance faults or short-cycle. Cleaning the ducts and sealing leaks often resolves the pressure issue without a service call to the HVAC controls.
- Flood-damaged flex duct in river-adjacent neighborhoods. Low-lying areas near the Guadalupe River bends see periodic high water that discolors and collapses flex duct. We replace with R-8 insulated flex, seal with mastic, and document the before-and-after photo record for the homeowner’s files.
BeforeAfterLennox Service in Seguin: What Local Conditions Mean for Your Equipment
The Guadalupe River runs directly through Seguin, and low-lying neighborhoods along its bends - particularly on the north side near Rivercrest Drive and similar streets - experience periodic flood events that force moisture into subfloor duct cavities and air handler closets. This is a contamination pathway that neighboring cities on higher ground, like New Braunfels or Cibolo, do not face at the same rate or frequency.
For Lennox owners in Seguin, this means two things. First, the combination of flood moisture and Gulf Coast humidity funneled up the river corridor accelerates mold colonization inside flex duct insulation, especially on the return side where negative pressure pulls crawl-space air continuously. Second, Seguin’s position at the eastern edge of the Ashe juniper belt loads return systems with cedar pollen each December through February - debris that settles in Lennox ductwork and compounds any existing moisture problem.
A standard brush-and-vac cleaning on a river-adjacent Lennox system without moisture assessment and coil inspection is a callback waiting to happen. We learned this the hard way early on. Now our protocol for north-side Seguin calls starts with a humidity reading at the air handler and a video probe of the return drop before we write a scope or a price.
Seguin service area coverage includes river-adjacent neighborhoods and the full east-to-south side housing stock.
Lennox Models & Products We Service in Seguin
Seguin’s housing mix maps cleanly to Lennox’s product timeline. The 1990s-2000s tract homes on the east and south sides typically run Lennox Merit Series (ML/EL/XC) equipment - functional, common, and often overdue for first-time duct cleaning. Lennox Elite Series (XC/XP) units appear as replacement equipment in 1960s-1980s homes along the Guadalupe corridor, where homeowners upgraded but kept original duct layouts. Newer commuter-belt subdivisions on Seguin’s outer edges increasingly feature Dave Lennox Signature Collection (SL/XC) high-efficiency systems with variable-speed air handlers that are particularly sensitive to static pressure from dirty ducts.
We still encounter Lennox CompleteHeat and older G-series furnaces in downtown’s pre-WWII stock, where forced-air conversions from the 1960s left oversized metal plenums and deteriorating fiberglass liner. Our truck stock includes OEM-equivalent Lennox coil cabinets, plenum adapters, and filter racks where fit is critical, plus aftermarket flex duct, mastic, and hardware for the bulk of repair work.
Lennox Service Pricing in Seguin
Whole-system Lennox air duct cleaning in Seguin runs $380-$680 for a typical single-system home. What moves the number:
- Standard cleaning with video inspection: $380-$480 - covers supply and return ductwork, register cleaning, and documented photo record of every run.
- With coil treatment: add $90-$140 - applies foaming cleaner and EPA-registered sanitizer to the Lennox cased A-coil, necessary when flood moisture or biological growth is present.
- With duct sealing (Aeroseal or manual mastic): add $180-$320 - seals leaks at plenum connections, register boots, and accessible seams; reduces static pressure and improves variable-speed system performance.
- Flex duct replacement or return chase rebuild: priced per linear foot after video inspection - common in river-adjacent Seguin homes with flood damage.
Every quote is written and agreed before work starts - Haven Standard Clause 1, no exceptions. No per-vent pricing, no $79 teaser that balloons once the truck is in your driveway. The price we write is the price you pay. Call (830) 549-6847 for an exact quote; estimates are free.
Serving Seguin, TX - Our Local Coverage Area
We’re based in the Seguin 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 Seguin
No. CleanRun is an independent Lennox service provider, not a manufacturer-authorized dealer. Duct cleaning, coil treatment, plenum repair, and flex duct replacement on Lennox equipment do not require dealer certification. We use OEM-equivalent parts where fit is critical and quality aftermarket components where spec is what matters. Our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews.
It might be, but not a standard one. Musty odor after flood events in river-adjacent Seguin neighborhoods usually indicates moisture in the return drop, possible mold on the coil cabinet, or collapsed flex duct - not routine dust accumulation. We start with humidity readings and video inspection. If the camera shows flood-discolored duct or biological growth, we quote coil treatment and duct repair or replacement, not just cleaning. Call (830) 549-6847 and we’ll run the inspection at no charge.
Every 4-6 years for most Seguin homes, but river-adjacent properties with crawl-space air handlers should be inspected every 2-3 years due to the moisture pathway. Homes with heavy cedar pollen exposure - common in Seguin’s December-February season - may also need more frequent return-side cleaning. We don’t sell maintenance contracts; we inspect and tell you what the camera shows.
Sometimes. Variable-speed Lennox air handlers throw fault codes when static pressure climbs above the design setpoint, often from clogged returns, collapsed ductwork, or leaks pulling unconditioned air. If the camera and pressure test confirm duct restriction, cleaning and sealing usually resolves the issue. If the fault persists after ductwork is corrected, the problem is likely in the control board or motor - and we’ll tell you that before we quote anything beyond the duct scope.
We replace flex duct, plenum connections, and return drops without touching the air handler or furnace. Most Lennox systems in Seguin need duct repair, not full replacement. The exception: if your Lennox equipment is over 12 years old with a cracked heat exchanger or failed coil, duct cleaning alone won’t save it. We’ll lay out repair versus replace numbers in writing and let you decide. Call (830) 549-6847 for a free second opinion on any written estimate you’ve already received.
Service Areas Near Seguin
We run Lennox service calls throughout the corridor: Lennox service in New Braunfels, Lennox service in Cibolo, plus Schertz, Selma, and Universal City. Each market has its own housing stock and contamination patterns - New Braunfels with its limestone geology and older Gruene-area conversions, Cibolo with rapid new construction and tight ductwork - but our protocol stays the same: video inspection first, written price second, documented photo record on every visit.
Book Your Lennox Service in Seguin Today
Call (830) 549-6847 to schedule a free estimate. A live person answers, 24/7. We’ll send a background-checked, uniformed technician who will show you the inspection photo before quoting a dollar. Written price before work starts. Documented photo record before we leave. Backed by the 365-Day Done Right Promise.
Show the photo first. Explain what you’re looking at. Then talk about what happens next.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning New Braunfels, serving Seguin since 2013.