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.
Lennox Air Duct Cleaning in Missouri City, TX | CleanRun Air Duct Cleaning Sugar Land
We provide independent Lennox service across Missouri City - not manufacturer-authorized, but built on hands-on teardowns of Lennox Signature, Elite, and Merit systems in Fort Bend County homes since 2013. The one thing that makes our Lennox work here different: we know how Missouri City’s 140°F attics and Harvey flood history interact with Lennox flex duct, because we’ve photographed the damage inside hundreds of local systems. Call (346) 421-3357 for a written estimate before any work starts.
Why Missouri City Residents Choose Us for Lennox Service
We’ve cleaned, sealed, and repaired Lennox ducted systems across Fort Bend County since the Sienna Plantation build-out, so we know how Lennox air handlers, coils, and balanced supply/return layouts interact with attic flex duct. Our credibility is built on hands-on Lennox tear-downs and video inspections, not on any manufacturer authorization. Lennox sales & service from our perspective means understanding what actually fails in local conditions - and documenting it.
Tomas Reyes, who leads our crew, grew up in Queens and picked up his first trade skills in HVAC systems coursework at Queensborough Community College before moving south. He’s spent the better part of two decades pulling inspection cameras through residential ductwork across the Houston metro. In Sugar Land neighborhoods like First Colony, Tomas and his crew have logged enough hours to recognize the exact debris signature Missouri City’s humid Gulf Coast summers leave inside ductwork. He built CleanRun around one habit: showing the customer the before image before recommending anything. “Look at the photo first. Then we’ll talk about what needs to happen.”
Every job we run in Missouri City follows the H.A.V.E.N. Standard. Haven Standard Clause 1: written price before any work starts, every time. Haven Standard Clause 3: Verified Crews - background-checked, uniformed technicians identified by name before arrival. We carry OEM-equivalent Lennox-compatible flex duct, plenum connectors, mastic, and foil tape on our trucks, plus select OEM Lennox components when a control or coil part truly requires it. Missouri City service area coverage means we’re not routing trucks from Clear Lake or Katy; we’re local.
Common Lennox Air Duct Cleaning Problems We Solve in Missouri City

- Flex duct liner delamination at Lennox supply plenums. After 15-20 years in 140°F+ Missouri City attics, the liner peels and sheds into the airstream, then collects at Lennox evaporator coils and blower wheels. We see this most in Sienna Plantation’s 1990s-2000s builds, where original flex duct has baked through two decades of summers.
- Condensate and humidity carryover from Lennox air handlers in two-story layouts. Sienna Plantation’s long branch runs stay damp, and microbial growth takes hold on flex duct interior before a homeowner smells it. The second-story system runs longer, works harder, and dries slower - a pattern we document with video inspection before quoting any work.
- Return-side leakage at Lennox filter cabinets and platform returns. This pulls attic air, insulation fibers, and Oyster Creek floodplain dust directly into the system instead of through the filter. In Missouri City’s older Quail Valley homes, platform returns were often built with minimal sealing; the gap grows over time.
- Harvey-era water entry through low floor vents and return grilles. In Quail Valley and Lake Olympia, floodwater entered homes through low-set openings, leaving mold colonies inside Lennox flex runs even after visible drywall and flooring were replaced. The duct interior was never dried out.
- Debris accumulation at Lennox blower wheels and coils from continuous operation. Missouri City’s eight-to-nine-month cooling season means systems run almost constantly, pulling humid, pollen- and mold-spore-laden air through ductwork. The debris load here exceeds what northern climates see in three years.
Before
AfterLennox Service in Missouri City: What Local Conditions Mean for Your Equipment
In the Oyster Creek floodplain portions of Quail Valley and Lake Olympia, Harvey floodwater entered through low-set floor vents and return-air grilles, so we routinely find active mold inside Lennox flex duct runs in homes where the visible water damage was repaired years ago. That flood-and-humidity history makes interior duct inspection more important here than in newer, non-flooded Houston suburbs.
Missouri City’s 1990s-2000s master-planned community building boom produced a concentrated wave of homes whose attic-mounted flex duct systems are now 20-30 years old and have spent every summer baking in attics that routinely exceed 140°F. The liner degradation, gap formation, and debris infiltration rates far exceed what you’d see in ducts located in conditioned spaces. Compounding this, Hurricane Harvey’s flooding of Fort Bend County neighborhoods pushed moisture into duct systems that were never properly remediated, making mold-inside-ductwork a significantly more common finding in Missouri City than in newer or less flood-impacted Houston suburbs.
For Lennox owners specifically, this means two things. First, the Signature and Elite air handlers installed during that build-out are now paired with flex duct that may be structurally compromised - brittle, delaminating, or mold-saturated - even when the mechanical components still run. Second, Lennox’s balanced supply/return design depends on sealed ductwork; when Harvey-era moisture has degraded flex duct interior, the system’s designed airflow balance fails, and the homeowner gets uneven cooling, musty odors, or higher energy bills without an obvious cause. We find this by running a camera through every run, not by guessing from the vent grille.
Lennox Models & Products We Service in Missouri City

We work on the full Lennox residential line: Dave Lennox Signature Collection (SL series), Elite Series (EL series), Merit Series (ML series), CompleteHeat systems, and Lennox coils paired with attic air handlers. Our trucks carry OEM-equivalent Lennox-compatible flex duct, plenum connectors, mastic, and foil tape for same-visit repairs. We source OEM Lennox components - control boards, coils, specific blower assemblies - only when the part truly requires factory specification.
For Missouri City’s concentration of 1990s-2010s builds, we most commonly service EL-series air handlers in Sienna Plantation two-stories and ML-series units in Colony Meadows single-story homes. The SL-series Signature systems, less common here, typically appear in custom builds near the golf course in Quail Valley. We stock the flex duct diameters and plenum adapters that match these local installations, so we’re not ordering parts while your system sits open.
Lennox Service Pricing in Missouri City
Air Duct Cleaning - Missouri City typically runs $380-$620 for a complete system, depending on home size, duct accessibility, and whether video inspection reveals damage requiring repair or section replacement. A standard cleaning includes negative-pressure extraction with Rotobrush or Nikro equipment, register and return grille cleaning, and a Documented Photo Record of every duct run delivered to you as part of the job record.
Factors that push toward the higher end: two-story Sienna Plantation layouts with long branch runs requiring additional access points, Harvey-era moisture damage requiring antimicrobial treatment, or delaminated flex duct needing section replacement with OEM-equivalent material. We deliver a written price before any work starts - Haven Standard Clause 1 - and that price is per system, not per vent. No per-vent pricing, no add-on surprises after the truck arrives.
Every quote includes the video inspection, before-and-after photography, and our 365-Day Done Right Promise in writing. Call (346) 421-3357 for an exact quote - estimates are free, and we’ll put our number next to any competitor’s written estimate under our Free Second Opinion policy.
Serving Missouri City, TX - Our Local Coverage Area

We’re based in the Missouri 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 Missouri City
Missouri City’s 70%+ year-round humidity and 140°F attic temperatures create condensate carryover in Lennox air handlers, especially in two-story homes with long flex duct branch runs. The damp interior promotes microbial growth you smell when the blower kicks on. Video inspection finds it; cleaning and sealing eliminates it. Call (346) 421-3357 for an exact quote - estimates are free.
Yes. We are an independent service provider, not manufacturer-authorized, and routine duct cleaning does not void Lennox equipment warranties. We use professional-grade equipment - Rotobrush, Nikro, Abatement Technologies - and document our work with photos, so any warranty question has a clear record. We do not alter factory control settings or electrical components during duct cleaning.
Often, no. In Quail Valley and Lake Olympia, we regularly find active mold inside Lennox flex duct runs where visible water damage was repaired years ago but the attic ductwork interior was never inspected or dried out. Brittle, mold-saturated flex duct should be replaced; we make that call with camera evidence, not assumptions. Call (346) 421-3357 for an exact quote - estimates are free.
Video inspection shows the difference. If the flex duct liner is intact with isolated gaps, we repair and seal with mastic. If it’s delaminated, brittle, or mold-saturated past 20% of the run length, replacement is the honest call - and we show you the footage before quoting either option. Sienna Plantation’s long branch runs and 140°F attic history push more systems toward replacement than single-story homes in cooler climates.
Yes. Mixed-brand homes are common in Missouri City’s resale market, especially in Colony Meadows and Lake Olympia where original Lennox systems were partially replaced. We clean and seal ductwork serving any brand of air handler; our focus is the duct system integrity and airflow balance, not the manufacturer of the box at the end of the run.
Service Areas Near Missouri City

We run Lennox service calls throughout Fort Bend County from our Sugar Land base. Nearby areas include Lennox service in Sugar Land - including First Colony and Riverstone - plus Lennox service in Stafford, Pecan Grove, Richmond, and Fresno. If your Missouri City-adjacent neighborhood isn’t named here, call anyway; our trucks cover the full metro corridor.
Book Your Lennox Service in Missouri City Today
Call (346) 421-3357 to schedule our Dryer Vent Cleaning in Missouri City or your Lennox air duct cleaning. A live person answers, we’ll give you a written price before any work starts, and you’ll receive a Documented Photo Record of every duct run when the crew leaves. The 365-Day Done Right Promise covers every job in writing.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Sugar Land, serving Missouri City since 2013.




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