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 Houston, TX | Hollis Air Duct Houston
Air Duct Cleaning - Houston for a Lennox system typically costs $450 – $900 for a whole-home system, and the work usually takes 3 – 5 hours. We’re an independent Lennox service provider, not a manufacturer shop, which means we diagnose duct contamination without brand bias. The one thing that makes our Lennox work different here: we know Houston’s humidity gets inside ductwork and stays there, and our entire process is built around that fact. Call (713) 936-5800 for a written quote before anyone touches your system.
We’ve worked on Lennox equipment across Houston since 2004. Our Lennox sales & service experience runs deep, from older Signature Series air handlers in Meyerland ranches to new-build Elite and Merit systems out in Katy and Cypress. Roy Castellanos, owner of Hollis Air Duct Houston, leads a crew that’s serviced Houston homes and businesses for well over a decade, including jobs in the Energy Corridor where ductwork hasn’t seen a brush since the Clinton administration. We show up uniformed, background-checked, and ready to work.
Why Houston Residents Choose Us for Lennox Service
Most duct cleaning companies in Houston will clean any system you put in front of them. That works fine until you’re dealing with a Lennox variable-speed air handler that holds moisture differently than a single-speed unit, or a high-efficiency coil that’s grown a layer of biofilm Houston’s humidity put there. We’ve spent years learning how Lennox equipment behaves in this climate specifically. That’s the difference between a crew that cleans the ducts and a crew that knows why they got dirty in the first place.
Roy picked up his trade fundamentals at Los Angeles Trade-Technical College before spending years in air duct cleaning full time. He runs a tight job: no upsells mid-visit, no vague estimates, no cutting corners on the negative-pressure process. Every quote is written before work starts and doesn’t move at the door. Every job carries our 365-Day Done Right Promise, in writing. If it’s not done right, we come back and make it right at no charge.
We stock OEM-grade Lennox-compatible access panels and coil cleaning solutions locally for fast Houston turnaround, and we use professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies on every job. Calls are answered by a live person 24/7 at (713) 936-5800.
Styles & brands we work with
Common Lennox Air Duct Cleaning Problems We Solve in Houston
- Dust and debris in variable-speed air handler blower compartments. Lennox variable-speed blowers move air constantly, even at low speed, and in Houston they run from March through October. That’s a lot of hours pulling Houston’s pollen, construction dust, and whatever blows off the Gulf through the filter. Debris builds in the blower compartment, airflow drops, and the motor works harder. We open it up, clean it out, and confirm airflow is back where it should be.
- Microbial growth on high-efficiency evaporator coils. Lennox’s high-efficiency coils are designed to squeeze more cooling out of less energy, but they hold moisture longer. In Houston’s humidity, especially after heavy thunderstorms or flooding, that moisture breeds mold and mildew on the coil face and the ductwork right next to it. We clean the coil, apply antimicrobial treatment, and check the surrounding duct for what the moisture left behind.
- Crushed or disconnected flexible ducts in newer Lennox systems. In suburban developments like Katy and Cypress, we regularly find flex duct crushed by attic storage or pulled loose from construction debris that was never cleaned out. The builder’s crew gets it connected well enough to pass inspection, then someone stores a Christmas tree on top of it and upstairs airflow drops by half. Video inspection finds it in minutes.
- Lint and dust buildup in return ducts of sealed post-2000 homes. Tight building envelopes are good for energy bills but bad for particulate buildup. Sealed Houston homes with Lennox equipment recirculate the same air constantly, and when the return ducts are dirty, you’re breathing that dust every cycle. Houston’s pine, oak, and ragweed pollen add a heavy organic load that makes it worse for allergy sufferers.
- Silt and mold trapped in slab-on-grade ductwork after flash floods. Meyerland and other established Houston neighborhoods with slab foundations have ductwork running through concrete. After flash floods or hurricane-driven rain, water finds its way in and doesn’t dry out. Silt settles in the low points, mold follows, and the system pushes musty air through the house. Video inspection shows exactly where the problem is before we start cleaning.
Lennox Service in Houston: What Local Conditions Mean for Your Equipment
Houston’s post-Hurricane Harvey building codes now require flood vents and elevated equipment in many areas, but ductwork in slab-on-grade homes in Meyerland can still trap silt and mold after flash floods, making video inspection a critical first step that isn’t needed in neighboring drier cities like Dallas. What that means for Lennox owners in Houston is this: if your system sits in a 1960s ranch on a slab foundation, and you’ve had water anywhere near the house in the last five years, there’s a real chance your return ducts are holding something you can’t see and shouldn’t breathe. The Lennox air handler in the closet might look clean, but the duct run under the slab tells a different story. We’ve pulled silt out of Meyerland return ducts that looked like river bottom, and the homeowner had no idea anything was there.
Our crew recently serviced a 1960s ranch in Meyerland with a Lennox Signature Series air handler. The homeowner complained of musty air and reduced airflow. Video inspection showed caked dust and mold on the return duct’s interior near the foundation. We performed full return duct cleaning, applied antimicrobial coil treatment to the Lennox evaporator, and sealed leaks with mastic. Airflow improved by nearly 20% and the odor disappeared.
Lennox Models & Products We Service in Houston
We service the full Lennox residential lineup, including the Signature Series, Elite Series, Merit Series, and the Dave Lennox Signature Collection. Older Signature air handlers in Houston’s established neighborhoods, newer Elite systems in Katy and Cypress new-builds, and everything in between. Where reliability matters, like duct access panels or coil cleaning solutions, we use OEM-grade Lennox-compatible components. When a high-quality aftermarket alternative performs equal or better without the brand markup, we use that instead and tell you why. The honest recommendation is always repair or sealing over replacement when it restores proper airflow and saves you money.
See the difference
Before
After
Before
After
Before
AfterLennox Service Pricing in Houston
Whole-home Lennox air duct cleaning in Houston runs $450 – $900 depending on system size, number of returns, and how long it’s been since the last cleaning. Evaporator coil cleaning adds $250 – $450. Video inspection runs $99 – $199, and duct sealing with mastic runs $400 – $800 depending on how many leaks the inspection finds. If you bundle duct cleaning with coil cleaning, expect the combined job to land in the $700 – $1,200 range for the average Houston home.
What drives the cost: system size, number of stories, how contaminated the ducts are, and whether we’re dealing with a single-return ranch or a two-story with multiple returns on each floor. The written estimate is free, and the price doesn’t change once we’re inside. Call (713) 936-5800 for an exact quote on your Lennox system.
Serving Houston, TX - Our Local Coverage Area
We’re based in the Houston 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 Houston
Houston Lennox systems run almost year-round, and the high humidity means microbial growth develops faster inside ducts than in drier cities like Phoenix or Dallas. Most Houston Lennox owners should have ducts inspected every 2 – 3 years and cleaned every 3 – 5 years, depending on pets, allergies, and whether the house is near active construction. If you run your AC from March through October, you’re moving more air through the system than most of the country, and that air carries more moisture and organic matter. Call (713) 936-5800 and we’ll tell you what your system actually needs after a look.
Look for musty odors that get stronger when the AC kicks on, visible mold around vent registers, dark staining on ceiling vents, and allergy symptoms that worsen indoors. Harvey floodwater left silt and organic matter in ductwork across Houston, and in slab-on-grade homes that water often sat in ducts for weeks before anyone realized. Even if the drywall was replaced and the floors dried out, the ductwork might still be holding a mold reservoir. Video inspection is the only way to know for certain, and it’s the first step we take on any post-flood Houston home. Call (713) 936-5800 for an inspection.
Yes, and it’s one of the most common calls we get in Katy. New construction fills ductwork with drywall dust, sawdust, and debris before the system ever runs. Builders rarely clean the ducts before turnover. Beyond that, flexible ducts in Katy attics are frequently crushed by contractors or homeowners using the attic for storage, and the upstairs registers are often the ones that suffer. We’d run a video inspection to check for crushed runs and blockages, then clean the full system and confirm airflow at each register. Call (713) 936-5800 to schedule a look.
Duct cleaning alone won’t fix a fouled coil, and a fouled coil defeats the purpose of clean ducts. The evaporator coil is where condensation forms every cooling cycle, and in Houston’s humidity it’s almost always damp. That damp surface catches dust, pollen, and whatever else the filter didn’t stop, and it grows mold. If the coil is dirty, the air passing over it picks up those contaminants before it even reaches the ducts. Lennox variable-speed air handlers cycle more air over the coil than single-speed units, so the problem compounds faster. Coil cleaning with antimicrobial treatment is the foundation of the whole job. Get a quote at (713) 936-5800.
Duct sweating happens when warm, humid Houston attic air meets the cold metal or flex duct surface, and it’s common in older homes where the attic insulation is thin and the duct insulation was installed decades ago. Sweating ducts drip water onto attic insulation, promote mold, and reduce efficiency. The fix is usually a combination of insulation at the duct exterior, sealing attic air leaks, and making sure the duct connections are airtight so conditioned air isn’t leaking into the attic space. On Lennox Signature systems we check the duct runs first because the system’s efficiency doesn’t matter if the ducts are sweating away your cooling load. Call (713) 936-5800 for an evaluation.
Service Areas Near Houston
We serve Houston and the surrounding communities including Houston service area, and we regularly work in Lennox service in Spring, Lennox service in Humble, League City, Baytown, and Atascocita.
Book Your Lennox Service in Houston Today
Written price before we start. A live person on the phone. A 365-Day Done Right Promise on every job. Call (713) 936-5800 and Roy’s team will get your Lennox system scheduled. Clean air doesn’t announce itself; you just stop noticing the problem.
Written by Roy Castellanos, Owner, Hollis Air Duct Houston.