Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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 Garland, TX | Hollis Air Duct Dallas
Our Air Duct Cleaning - Garland team handles Lennox duct systems every week, and the work here has a distinct pattern: decades-old flex duct, attic heat above 140°F, and clay soil that shifts and pulls connections loose. Hollis Air Duct Dallas is an independent Lennox service provider, not a manufacturer-authorized dealer, which means we answer to you and to the condition of your ductwork, not to a corporate playbook. Roy Castellanos and our crew know exactly how Lennox air handlers, coils, and return plenums behave in Garland’s older brick ranches. If you want a written price before any work starts and a full year of coverage on the job, call (361) 309-6223.
Why Garland Residents Choose Us for Lennox Service
Most duct cleaning companies in Garland will clean a Lennox system the same way they’d clean any other brand. That approach misses what actually matters here. Lennox air handlers pull air differently depending on the model and the duct configuration, and in Garland’s 1960s and 1970s homes, the duct configuration is often original, fragile, and partially collapsed. Roy Castellanos trained in HVAC and air systems at Los Angeles Trade-Technical College before the work brought him to Dallas, and he runs every Lennox job with a methodical eye: inspect first, price in writing, touch nothing until you’ve approved the number. We’re part of the Garrison Partners family, running under The Garrison Standard, which puts the specifics in writing. Our techs arrive uniformed, background-checked, and inside the window we quoted. No exceptions.
We also stock what Lennox owners in Garland actually need: commercial-grade flex duct rated for extreme attic heat, mastic for sealing return plenum joints, and filtration components from Honeywell, Aprilaire, and Guardsman that pair correctly with Lennox air handlers. If your system needs an OEM Lennox part to maintain airflow and static pressure specs, we’ll use it. If an aftermarket material does the job better in North Texas heat, we’ll tell you that too, and explain why. Our full Lennox capability is outlined on our Lennox sales & service page.
Styles & brands we work with
Common Lennox Air Duct Cleaning Problems We Solve in Garland
These are the problems we see repeatedly when we open up Lennox systems in Garland homes, and each one ties directly to how this city’s houses were built and how its climate punishes them.
- Collapsed flex duct on Lennox air handlers. In Garland homes built from the 1960s through the 1980s, the original gray flex duct connected to Lennox air handlers has often collapsed internally from decades of attic heat. The inner liner separates, airflow drops, and the Lennox blower has to work harder just to push air through a crushed path. Cleaning cannot fix a collapsed run. We replace it.
- Blown-in insulation inside Lennox return plenums. Garland’s clay soil shifts with wet-dry cycles, cracking slab foundations and pulling duct connections loose at the joints. Once a joint opens in the attic, blown-in cellulose or fiberglass gets pulled straight into the Lennox return plenum. That insulation then rides through the air handler, coats the blower wheel, and ends up in your supply registers. We seal the joints with mastic and clean the entire return path.
- Fiberglass breakdown from Lennox evaporator coil condensation. Garland summers push coils to produce constant condensation. When a Lennox evaporator coil leaks or the drain pan overflows, that moisture soaks into nearby duct insulation. The fiberglass breaks down, releasing white particulate and a musty smell into the supply runs. Cleaning the ducts without addressing the coil leak means the problem returns in weeks. We inspect both.
- Lennox blower wheel and secondary heat exchanger dust buildup. Garland HVAC systems run nearly year-round. Hot, humid summers and frequent spring storm dust mean a Lennox blower wheel can accumulate a thick coat of dust that reduces airflow and, on gas furnaces, can trigger limit switch trips. We pull and clean the blower assembly, not just the duct runs.
- Pest intrusion in attic duct runs. Older Garland homes with pier-and-beam or slab foundations often have attic duct runs with gaps at the plenum connections. Rodents and insects find those gaps. We’ve removed nests, droppings, and insect casings from Lennox supply ducts in neighborhoods across Garland, then sealed the entry points so the problem doesn’t repeat.
Lennox Service in Garland: What Local Conditions Mean for Your Equipment
Here’s a checkable fact about Garland that shapes this work more than any brochure ever will: in the Camelot and Northlake neighborhoods, we routinely open Lennox air handlers and find the return plenum half-filled with blown-in cellulose and the original 1970s gray flex duct collapsed flat inside the attic. That combination, which we almost never see in newer suburbs like Wylie or Sachse, exists because Garland’s housing stock is dominated by brick ranches built from the 1960s through the 1980s, with attic-mounted Lennox equipment and flex duct that was never designed to survive 40-plus years of North Texas heat. Clay soil shifting cracks the slab, which pulls duct connections loose, which opens the return to attic insulation. Attic temperatures above 140°F bake the flex runs until the inner liner separates from the outer jacket. What a Lennox owner in Garland is dealing with is not a simple dust problem. It’s a structural one. Cleaning the ducts without sealing the joints and replacing the collapsed runs leaves the system exactly where it started, and now you’ve paid for a cleaning that didn’t change anything. We inspect for these specific failures on every Lennox job in Garland because we know they’re the rule here, not the exception.
Lennox Models & Products We Service in Garland
Our crews work on the full range of Lennox residential equipment across Garland, from the Merit Series, including the ML180 furnace and ML14XC1 air conditioner, to the Elite Series, including the EL296V and EL280, and the Signature Collection, with the SLP98V and XC25. We also service Lennox Healthy Climate filtration products, including the HC16 media cabinet and PureAir air purification system, and we’ll explain what each filtration stage actually does for your indoor air before recommending anything. When a duct or coil repair must maintain exact airflow and static pressure specifications, we use OEM Lennox components. For duct sealing, flex replacement, and insulation work, we often use commercial-grade aftermarket materials that hold up better under Garland attic heat than the original parts did. We do not stock generic hardware-store flex duct on our trucks, because it fails early when installed in a 140°F attic above a Lennox air handler.
Last July, our crew opened a Lennox Elite EL296V air handler in a Camelot home and found the return plenum half-filled with blown-in cellulose that had been pulled through unsealed joints after years of slab shifting. We sealed every joint with mastic, replaced the collapsed 6-inch flex runs leading to the master suite, and finished with our Dryer Vent Cleaning in Garland and a full return and supply duct cleaning. The homeowner’s daughter stopped sneezing within a week.
See the difference
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AfterLennox Service Pricing in Garland
Here are honest price ranges for Lennox air duct cleaning work in Garland, as of this writing, so you know what to expect before you call. A full Lennox system cleaning, including supply ducts, return ducts, the blower assembly, and the evaporator coil, typically runs between $450 and $850 depending on home size, number of runs, and accessibility. Return duct cleaning alone, when the return is the primary problem, runs $200 to $400. Flex duct replacement, which covers collapsed or torn runs, runs $85 to $150 per run including materials and sealing. Duct joint sealing with mastic runs $15 to $25 per joint. Duct insulation repair or replacement runs $300 to $700 for the average Garland attic.
What drives cost in Garland specifically is attic accessibility and duct condition. A one-story brick ranch with a low-pitch roof and a tight attic takes longer to work in than a newer home with a walkable attic. If your flex duct is original and collapsed, your price includes replacement because cleaning collapsed runs does nothing. Every estimate we give is in writing before any work starts, and the number does not move at the door. The free estimate includes an inspection of your Lennox air handler, return plenum, and visible duct runs. Call (361) 309-6223 and we’ll give you an exact number for your system, not a range that becomes something else.
Serving Garland, TX - Our Local Coverage Area
We’re based in the Garland 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 Garland
Your Lennox system pulls attic insulation into the return ducts because the joints where the return plenum meets the duct runs have opened up, usually after years of clay soil movement cracking your slab and shifting the duct connections. Once a joint opens, the negative pressure inside the return path, which every Lennox air handler creates whenever it runs, acts like a vacuum and draws blown-in insulation straight into the plenum. The fix is sealing those joints with mastic, not repeatedly cleaning insulation out of the return. Call (361) 309-6223 and we’ll inspect the return path and give you a written price for the seal work and any cleaning that follows.
In Garland’s climate, with the system running nearly year-round due to hot summers and storm-season dust, we recommend cleaning your Lennox air handler and ducts every three to five years, and sooner if you see dust accumulating on registers shortly after cleaning, smell musty air when the system runs, or have pets that shed heavily. Homes with original flex duct that’s degrading will need attention sooner than newer homes, because fiberglass breakdown adds particulate to the air stream continuously. Your technician can tell you during the inspection whether your system is at the three-year mark or can wait.
No, cleaning cannot fix a collapsed flex run. Once the inner liner of the original 1980s flex duct has separated or crushed flat, like we find in Camelot and Northlake attics across Garland, the only fix is replacement. We’ll show you exactly what we find during the inspection, and we’ll price each collapsed run individually so you can decide which ones to replace now and which can wait. Running a Lennox furnace with collapsed duct runs wastes energy and shortens blower motor life, so we recommend replacing failed runs when you find them.
Yes, the Lennox evaporator coil should be cleaned as part of a complete system cleaning, not skipped, and Garland’s humidity makes this more important here than in drier climates. Garland summers push coils to run constantly, and the condensation they produce collects dust and debris that reduces heat transfer and creates a damp surface where mold can grow. Cleaning the ducts but leaving a fouled coil means the system still cannot move air properly or cool efficiently. Our full-system price includes the coil.
For older Garland homes, a video inspection of the return plenum and supply runs is the single most useful diagnostic step we perform. It shows you and us exactly what’s inside: collapsed flex, insulation pulled into the return, rodent debris, or a coil leak. Without it, you’re paying for a cleaning based on assumptions. We include the inspection with our free estimate, and we’ll walk you through what the camera shows before any work is approved. Call (361) 309-6223 to schedule yours.
Service Areas Near Garland
We provide Lennox air duct cleaning across Garland and the surrounding area. Our crews work regularly in Richardson, Dallas, Rowlett, and Heath. If you own a Lennox system in Richardson, our Lennox service in Richardson page covers what we find there. For Dallas proper, see our Lennox service in Dallas page. And our full coverage area is on the Garland service area page.
Book Your Lennox Service in Garland Today
We inspect your Lennox system, write the price down, and do the work by the book. Call (361) 309-6223 for a free estimate, or to schedule your cleaning. Clean ducts, straight answers, that’s the whole job.
Written by Roy Castellanos, Owner at Hollis Air Duct Dallas, serving Garland and the surrounding area since 2004.