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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Before
AfterLennox Air Duct Cleaning in Flower Mound, TX | CleanRun Air Duct Cleaning Lewisville
We provide independent Lennox service across Flower Mound - not manufacturer-authorized, but built on two decades of hands-on work with Lennox variable-speed air handlers, communicating systems, and coil cabinets in this exact housing stock. The one thing that makes our Lennox work here different is the sheer scale of these homes: most Flower Mound properties run two or three separate systems with triple the duct footage of a typical Lewisville ranch, which means register-boot separations and collapsed flex-duct liners show up far more often per household. Call (940) 240-8552 for a written estimate before any work starts.
Why Flower Mound Residents Choose Us for Lennox Service
Tomas Reyes, our owner, grew up in Queens and learned HVAC fundamentals at Manhattan’s Apex Technical School before spending the next twenty-plus years working inside ductwork across North Texas. He and our crew have run jobs in Flower Mound since the early 2010s - including plenty of 2000s-era homes near the Estates of Montalcino and Lakeside, where the flex duct sags and separates in ways you won’t find until you put a camera inside.
We know Lennox equipment. Our techs have serviced Dave Lennox Signature Collection, Elite Series, and Merit Series systems in Flower Mound’s master-planned subdivisions since those homes were new. We understand how the CBX32MV and CBX40UHV variable-speed air handlers interact with the area’s aging flex-duct networks, and we stock both OEM Lennox and quality aftermarket parts for fast turnaround. Every job starts with a written price under Haven Standard Clause 1 - no exceptions - and ends with a documented photo record of every duct run, delivered to you before we leave. That’s been our practice since 2013.
Here’s the before photo. Now let’s talk about what happens next.
Common Lennox Air Duct Cleaning Problems We Solve in Flower Mound
- Variable-speed air handlers stressing flex-duct joints. Lennox CBX32MV and CBX40UHV units run at higher static pressure than single-stage handlers. In Flower Mound’s 1990s-2000s attic installations, that extra pressure accelerates liner sag and separation at mastic joints - especially on unsupported 20-foot spans common in larger homes. We find these failures regularly in subdivisions like Lakeside, where the original installers didn’t anticipate two decades of thermal cycling.
- Pollen bonding to coil fins and duct walls. Lennox Signature and Elite series evaporator coils use tight all-aluminum fin spacing that traps cedar elm and oak pollen from the Cross Timbers zone. When attic temperatures cycle above 130°F in July and August, that pollen bakes onto duct walls and coil surfaces. Cleaning removes the bonded layer; without it, airflow drops and runtimes climb.
- Communicating systems throwing ‘duct system fault’ codes. Lennox iComfort thermostats and zone boards flag high static pressure or duct faults when a register boot separates and dumps conditioned air into the attic. We’ve traced these codes to disconnected boots in Estates of Montalcino homes where the original flex-duct liner detached after fifteen summers of heat expansion. The code clears only after the duct is reattached and sealed.
- Outdoor unit debris loading the whole system. Lennox Merit and Elite condenser fan motors pull air through coils that collect pollen and Grapevine Lake humidity debris. Reduced outdoor airflow makes the compressor work harder, which stresses return ducts already compromised by liner collapse. Cleaning the coils and the ductwork together restores the design airflow balance.
- Three-system homes with triple the failure points. Most Flower Mound homes from the 1993-2008 boom run two or three Lennox systems to cover 4,000-6,000 square feet. More systems mean more air handlers, more plenums, more register boots, and more flex-duct runs - each one a potential separation point. A single cleaning visit here routinely covers 150-250 linear feet of ductwork, versus 60-80 feet in an older Lewisville ranch.
BeforeAfterLennox Service in Flower Mound: What Local Conditions Mean for Your Equipment
Flower Mound’s controlled-growth period from 1993 to 2008 produced something unusual in North Texas: a nearly uniform housing stock of large, single-family homes built with fiberglass flex duct and attic-mounted air handlers, almost all of it now 15-30 years old. That age matters. The inner liner of flex duct degrades from thermal cycling - attic temperatures in Flower Mound regularly hit 130-140°F from May through September - and the mastic joints at register boots become brittle, then crack, then separate.
For Lennox owners, this creates a specific pattern. The variable-speed air handlers in Signature and Elite systems push harder against increasingly compromised ductwork. The result is what we find on video inspection after video inspection: a detached boot in a 2003-built Lakeside home, blowing 55°F air into a 140°F attic instead of the bedroom below. The homeowner calls about poor cooling or high bills. The Lennox thermostat shows nothing wrong. The real problem is in the duct, not the unit.
Cross Timbers pollen makes it worse. Cedar fever peaks December through February; oak and elm follow through spring. Flower Mound’s proximity to Grapevine Lake adds humidity that condenses inside attic ducts during the seven-month cooling season. Pollen plus moisture plus degraded liner equals debris that bonds to duct walls and won’t move without professional negative-pressure extraction - shop-vac suction won’t touch it. This is why we use Rotobrush and Nikro equipment on every Air Duct Cleaning in Flower Mound, and why we photograph every run before and after.
Lennox sales & service is our core expertise, but we apply it specifically to Flower Mound’s conditions - not generic suburban ductwork.
Lennox Models & Products We Service in Flower Mound
We work on the full Lennox residential line:
- Dave Lennox Signature Collection: SL28XC, SL25XPV, EL18XPV - including communicating systems with iComfort thermostats and zone boards
- Elite Series: EL16XC, EL18XPV - variable-speed air handlers and tight-fin evaporator coils
- Merit Series: ML14XC, ML17XC - single-stage and two-stage systems common in 2000s Flower Mound builds
- CompleteHeat and iComfort systems: integrated controls, zone dampers, and communicating duct sensors
We stock OEM Lennox motors, contactors, and coils alongside quality aftermarket equivalents from Honeywell, Aprilaire, and Guardsman. For systems under 15 years old with good compressors, we typically recommend repair plus duct sealing. For 20-year-old units with failed compressors and collapsed duct networks, we’ll lay out replacement numbers honestly. Our Flower Mound service area coverage means parts are on the truck or available next-day - no waiting on a factory authorization.
Lennox Service Pricing in Flower Mound
Flower Mound’s larger homes and multiple systems mean our pricing reflects actual scope, not a teaser rate that balloons on arrival. Based on 2013-2025 job data across Denton County:
| Service | Typical Range |
|---|---|
| Single-system duct cleaning (up to 12 vents) | $450-$650 |
| Two-system home (typical Flower Mound) | $750-$1,100 |
| Three-system home (Estates of Montalcino, etc.) | $1,050-$1,450 |
| Flex-duct repair & sealing (per run) | $180-$340 |
| Video inspection with documented photo record | Included standard |
What drives cost: linear footage of ductwork, number of systems, accessibility of attic air handlers, and whether video inspection reveals separations or liner collapse requiring repair. Every quote is written and agreed before work starts - Haven Standard Clause 1. No per-vent pricing, no add-ons after arrival. Call (940) 240-8552 for an exact quote; estimates are free.
Serving Flower Mound, TX - Our Local Coverage Area
We’re based in the Flower Mound 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 Flower Mound
The fault usually means air isn’t reaching the ducts the way the system expects. In Flower Mound’s 2000s-era homes, we find detached register boots or collapsed flex-duct liners that create a pressure imbalance the iComfort board reads as a duct fault. The filter was never the problem. A video inspection finds the real failure point. Call (940) 240-8552 and we’ll put a camera in before quoting any work.
Every 4-6 years for homes without pets or smokers; every 3-4 years if you have multiple shedding animals or allergy-sensitive occupants. The Cross Timbers pollen load and Grapevine Lake humidity in Flower Mound accelerate debris accumulation compared to drier inland suburbs. Homes with three systems (common here) should inspect all air handlers on that same cycle - one clean system doesn’t help if another is blowing attic air through a separated boot.
Sometimes. Musty odor usually means moisture accumulation in the ductwork or on the evaporator coil, often from condensation in humid attic conditions. Cleaning removes the biological material causing the smell. If the odor returns within weeks, the root cause is likely a condensation drainage issue or duct leakage pulling humid attic air - which requires repair and sealing, not just cleaning. We photograph the coil and plenum to show you which situation applies.
Yes. The air handler contains the evaporator coil and the supply plenum - the starting point for every supply duct run. We clean the coil, plenum, and blower assembly as part of standard service; skipping this leaves the source of airflow contamination untouched. Attic access is standard in Flower Mound’s housing stock. Our technicians are background-checked and identified by name before arrival under Haven Standard Clause 3: Verified Crews.
No. Duct cleaning is maintenance, not modification, and does not affect equipment warranties. We are an independent service provider - not Lennox-authorized - and we document every step of our work. If you have an active Lennox warranty and need manufacturer-authorized repair, we will tell you honestly which components require factory service versus what we can address independently. Call (940) 240-8552 to discuss your specific warranty status.
Service Areas Near Flower Mound
We run Lennox service calls throughout the Flower Mound-Lewisville-Grapevine corridor, including Lennox service in Lewisville - where older, smaller homes mean different duct configurations and pricing - and Lennox service in Carrollton. We also cover Southlake, Little Elm, and the Grapevine Lake area for multi-system homes with similar attic-duct challenges.
Book Your Lennox Service in Flower Mound Today
Call (940) 240-8552 to schedule a free estimate. A live person answers every call, 24/7. We’ll provide a written price before any work starts, photograph every duct run before and after, and back the job with our 365-Day Done Right Promise. For Flower Mound’s larger, multi-system homes, we bring the equipment and the experience to match the scope - Rotobrush, Nikro, Abatement Technologies, and technicians who know what 140°F attic cycling does to a 2005 Lennox flex-duct installation. Ask about our Dryer Vent Cleaning in Flower Mound when you call.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Lewisville, serving Flower Mound and North Texas since 2013.