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 Dallas, CA | Morton’s Air Duct Cleaning
We provide independent Lennox air duct cleaning and duct repair across Dallas, with a focus on something most companies miss: the Blackland Prairie clay under your slab is quietly pulling your Lennox ductwork apart at the connections. If your Lennox system has been running but certain rooms never quite cool, the problem is often disconnected flex runs in your attic, not the equipment itself. Paul Adeyemi and the Morton’s team have been working inside Dallas attics long enough to know exactly what to look for before we quote a single dollar. Call (323) 918-4345 for a written estimate.
Why Dallas Residents Choose Us for Lennox Service
We’re independent air duct specialists, not a Lennox dealer or authorized service center. That distinction matters because our credibility comes from hands-on work inside Dallas slab-ranch homes, not from a wall badge. We’ve cleaned and repaired Lennox Merit, Elite, and Signature Collection systems in Lake Highlands, Garland, Richardson, and Irving long enough to know how each cabinet layout behaves when Dallas’s expansive clay soil starts moving. Paul Adeyemi grew up in Inglewood and trained in ventilation mechanics at Los Angeles Trade-Technical College, and he’s spent the better part of two decades inside the walls and attics of homes across the Los Angeles basin. That background shapes how we work here: we lay down drop cloths before anyone asks, we explain exactly what we found and what it costs before we touch anything, and we never rush a job because the schedule says so. For Lennox sales & service conversations, we’re the team that tells you the truth about your ducts, not the team that sells you a new system you don’t need.
Common Lennox Air Duct Cleaning Problems We Solve in Dallas
- Disconnected supply take-offs at the plenum. Dallas’s black-gumbo clay causes slab foundations to heave and settle with every wet-dry cycle. That movement travels up through the framing and works the sheet-metal collars loose where flex duct attaches to the Lennox trunk line. We regularly find two or three supply runs completely detached in 1970s-era Lake Highlands and Garland ranch homes.
- Variable-speed air handler coil fouling. Lennox Elite and Signature Collection air handlers move a lot of air, but in Frisco, Prosper, and Celina homes built within the last few years, that blower pulls fine post-construction drywall dust and insulation fibers straight into the coil face. Within the first year, airflow drops and the system works harder to hit setpoint.
- Masked duct leaks on communicating systems. Lennox SL18XC1 and SL22KLV systems use constant-pressure fan curves that compensate for small duct leaks automatically. That’s a nice engineering feature, but it means you won’t notice a disconnected flex run until the system can no longer keep up during a 100°F+ Dallas summer afternoon.
- Iced evaporator coils from restrictive filters. When a Lennox Healthy Climate filter cabinet runs a high-MERV filter on an undersized return, static pressure climbs and the coil ices over. The thaw-refreeze cycle creates a damp coil face, which breeds biofilm and that musty smell you notice when the blower kicks on.
- Collapsed flex-duct inner liners from attic heat. Dallas attics routinely hit 140-150°F from May through September. That sustained heat degrades flex-duct liner material from the outside in, and Lennox systems in 1960s-1980s inner-suburb homes often show collapsed or torn inner liners that no amount of cleaning will fix. The duct needs replacement.
Lennox Service in Dallas: What Local Conditions Mean for Your Equipment
Here’s what makes Dallas, TX genuinely different from any neighboring city. The Blackland Prairie clay under virtually every slab foundation in this city expands and contracts with seasonal moisture changes, and because Dallas homes route ductwork through attics rather than basements or crawl spaces, that foundation movement has a direct mechanical path to your Lennox duct connections. The slab shifts, the framing flexes, and the sheet-metal collar where flex duct meets the plenum works loose, year after year. When we run a video inspection on a Lennox system in Lake Highlands or Garland, we’re not just looking for dust. We’re checking every single take-off connection at the main trunk, because that’s where Dallas Lennox systems fail. The 140°F attic doesn’t help either. Heat accelerates flex-duct liner degradation from the outside while the system pushes conditioned air through from the inside. A cleaning call in Dallas is really a take-off inspection and repair job. You don’t see this failure pattern in cities with basement duct routing or different soil profiles. We do video inspections on every Lennox duct cleaning job for exactly this reason.
We were called to a 1972 Lake Highlands ranch home with a Lennox Merit Series furnace and a homeowner who said the back bedrooms never cooled, no matter how low she set the thermostat. Our tech ran a video inspection from the return plenum and found three supply take-offs completely detached from the main trunk. The sheet-metal collars had worked loose from years of black-gumbo foundation movement, dumping 140°F attic air directly into the duct system. We reattached and mastic-sealed all three runs, cleaned the Lennox evaporator coil and blower, and the back rooms hit setpoint for the first time in two summers.
Lennox Models & Products We Service in Dallas
We work on the full Lennox residential lineup: the Merit Series (ML14XC1, ML17XC1) air conditioners and matching furnaces, the Elite Series (EL16XC1, EL18XCV) with variable-speed air handlers, and the Dave Lennox Signature Collection (SL18XC1, SL22KLV) communicating systems. We also service Lennox Healthy Climate series media air cleaners and MERV filter cabinets. For duct repairs, we use OEM-equivalent quality aftermarket flex duct, mastic, and plenum collars. The failure points on Dallas Lennox systems are installation and soil movement, not the duct material itself, so we don’t upsell you on branded flex that doesn’t perform any better. If a Lennox air handler or coil is corroded beyond cleaning, we’ll tell you honestly and quote repair versus replacement. Most Dallas Lennox systems we see need duct repair and sealing, not new equipment.
Lennox Service Pricing in Dallas
Air duct cleaning for a typical Dallas Lennox system runs $450-$800 depending on the number of returns, the condition of the flex runs, and whether we’re also doing repairs. If our video inspection finds disconnected take-offs, which happens often in this city, duct sealing and reconnection typically adds $150-$350. A full flex-duct replacement on a 1970s ranch with collapsed liners can run $1,800-$4,000 depending on run lengths and attic access. Every quote is written, itemized, and agreed to before any work starts. We don’t do per-vent pricing, and we don’t bait with a low teaser number that balloons once the van is in your driveway. Call (323) 918-4345 and Paul will walk through what your specific Lennox system likely needs based on your neighborhood and home age.
Serving Dallas, GA - Our Local Coverage Area
We’re based in the Dallas 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 Dallas
Yes. Variable-speed Lennox air handlers are more sensitive to coil fouling than single-speed units because they modulate airflow constantly, and fine dust passing through a clogging coil compounds the problem faster. In Dallas, where post-construction dust from Frisco and Prosper homes is common, we clean the evaporator coil and blower wheel as part of the duct cleaning, not as a separate upcharge. That’s the only way to restore proper airflow and static pressure on these systems.
Blame the Blackland Prairie clay. Dallas slab foundations heave and settle with every wet-dry season cycle, and that movement travels through the framing into the attic. The sheet-metal collars where flex duct attaches to the Lennox trunk line work loose over time, while the flex duct itself often remains intact. It’s a soil-driven failure mode you don’t see in cities with different geology and basement duct routing. Call (323) 918-4345 if you suspect disconnected runs; we’ll confirm with video inspection before quoting anything.
First, check whether your return ducts are actually connected and sealed. New construction dust is fine enough to bypass many filters, but if your cabinet is pulling visible dust, you may have a return leak pulling attic air. We can run a video inspection from the return plenum to the filter cabinet and identify exactly where the dust is entering. If the coil face is already loaded, we’ll clean it as part of the service. Call (323) 918-4345 for a written estimate.
The telltale signs are rooms that never reach setpoint, higher summer bills, and sometimes a faint attic-smell from the supply vents. Lennox Signature Collection communicating systems are particularly good at hiding this because the constant-pressure fan curve compensates for leaks until the load gets too high. If you’re noticing uneven cooling in a Lake Highlands, Garland, or Richardson home, call (323) 918-4345. We’ll run a camera and show you exactly what we find before quoting a fix.
We use OEM-equivalent quality aftermarket flex duct, mastic, and plenum collars, because the failure points on Dallas Lennox systems are installation and soil movement, not the duct material itself. Branded flex doesn’t seal any better. If we’re quoting a repair versus replacement on a corroded air handler or coil, we’ll show you the numbers for both options and let you decide. Call (323) 918-4345 for a free estimate on duct repair or cleaning.
Service Areas Near Dallas
Morton’s Air Duct Cleaning serves the full Dallas service area, including Lake Highlands, Garland, Richardson, Irving, Grand Prairie, Frisco, Prosper, and Celina. We also work with homeowners in nearby metro areas. If you’re looking for Lennox service in Brooklyn or Lennox service in Cleveland, our team can connect you with the right independent specialist in those regions.
Book Your Lennox Service in Dallas Today
If your Lennox system isn’t cooling the way it should, or if rooms at the back of the house never feel right, call (323) 918-4345. Paul will answer, ask about your home and neighborhood, and set up a video inspection so you know exactly what’s happening in your attic before any work begins.
Written by Paul Adeyemi, Owner at Morton’s Air Duct Cleaning, serving Dallas since 2005.