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.
Why Dallas Homeowners Choose Lennox Air Duct Cleaning
Dallas Lennox service for air duct cleaning costs between $285 and $540 for a full system, depending on home size and how much debris has collected inside the ductwork. We’re Hollis Air Duct Dallas, an independent Lennox service provider, and we clean and seal the duct systems connected to Lennox furnaces, air handlers, and condensers across the metroplex. If you own a Lennox system in Dallas, the dust, pollen, and attic heat here work against your ductwork in ways a generic cleaning crew won’t catch. Call (361) 309-6223 for a written quote before any work begins.
Most Dallas homes with Lennox equipment fall into two camps: post-war brick ranch houses in neighborhoods like Casa View and Lake Highlands with original galvanized ducts now rusting through, or 1970s – 90s suburban builds where flex ducts sag, split, and pull attic insulation into the air stream. We know both failure patterns because we see them every week. Roy Castellanos and our crew provide Lennox in Richardson and service systems from Oak Cliff to Preston Hollow. Clean ducts, straight answers – that’s the whole job.
Why Trust Hollis Air Duct Dallas for Your Lennox Air Duct Cleaning?
We’re not a Lennox dealer and we don’t pretend to be. What we are is an independent service provider that has spent years pulling apart Lennox duct and HVAC setups in Dallas homes and commercial properties. That independence matters: we recommend what your system actually needs, not what a manufacturer program tells us to push. When a Lennox variable-speed blower is choking on accumulated dust, we clean it. When a flex duct in a Dallas attic has collapsed, we replace the section and seal the connections. When an evaporator coil is caked with years of unfiltered attic air, we address that too.
Roy Castellanos grew up in Los Angeles and completed his HVAC and air systems training at Los Angeles Trade-Technical College before the work pulled him east. He and the crew have been servicing Dallas homes and businesses for several years now, from residential streets in Oak Cliff to commercial properties near the Design District. Roy is methodical: no shortcuts on the inspection, no upsell you didn’t ask for, no invoice that looks different from the estimate. Our technicians are background-checked and uniformed. The price is in writing before any work starts. And the 365-Day Done Right Promise covers every repair for a full year: if it fails, we return and make it right at no charge, including a free second visit.
Styles & brands we work with
Common Lennox Air Duct Cleaning Problems We Fix in Dallas
- Dust and debris accumulation on variable-speed blower fans: Lennox Signature Collection systems (XC/XP series) and Elite furnaces like the EL296V rely on variable-speed blower motors that run constantly at low speeds. That continuous operation moves a lot of air, and in Dallas, that air carries dust from the surrounding prairies and pollen from spring and fall. Dust settles on the blower wheel and motor housing, causing strain, noise, and reduced airflow. We clean the blower assembly as part of our Lennox duct service because a dirty blower undoes the benefit of clean ducts.
- Fiberglass duct liner degradation after Lennox furnace replacements: When a new Lennox furnace or air handler goes in, the older ductwork attached to it often has fiberglass liner starting to break down. In Dallas humidity, that liner can loosen and release particles into the supply air. Homeowners notice a musty smell or visible specks on registers. We inspect for liner integrity during every Lennox duct cleaning and flag it when replacement or encapsulation is needed.
- Collapsed flex ducts causing frozen evaporator coils: Dallas attics reach 130°F or more in summer. Flex ducts that were installed in the 1980s and 90s sag, kink, and eventually collapse under that heat. When a Lennox AC unit loses airflow because of a collapsed return or supply flex, the evaporator coil freezes. The homeowner sees weak airflow and higher electric bills. We find and replace those collapsed sections, then seal all connections with mastic rated for Texas attic heat.
- Condensate drain clogging in high-humidity summers: Dallas summers are humid, and Lennox air handlers in closets and attics run for months at a stretch. Condensate drain lines clog with algae and sediment, water backs up, and damage spreads around the air handler. During a Lennox duct cleaning, we check the condensate drain path and clear obstructions. It’s a small step that prevents expensive water damage.
- Dust-caked evaporator coils on Lennox AC units: A coil that hasn’t been cleaned in years collects a layer of dust and grime that cuts airflow and reduces cooling. On Lennox Elite XC16 and Merit ML14XP1 systems, a dirty coil forces the compressor to work harder for less output. We clean the coil in place without removing it, which saves labor and gets your system back to design airflow.
Lennox Parts & Our Repair-vs-Replace Approach
For critical components like blower motors and coils, we use genuine Lennox OEM parts when they’re available. The tolerance and balancing on a Lennox blower wheel are engineered for that specific motor, and an aftermarket part with slightly different specs can introduce vibration and noise. For duct sealing and insulation, however, we prefer high-grade aftermarket materials rated for Texas heat. A good mastic and a proper foil-backed insulation outperform what many manufacturers ship from the factory, especially in Dallas attics that hit 130°F in July.
Our rule on repair versus replace is simple: we recommend replacement only when the cost of repair exceeds 50% of a new unit’s cost, or when rust and corrosion have compromised safety. Most Lennox duct and coil problems we see in Dallas are repairable. When they aren’t, we’ll tell you plainly and show you the numbers. Call (361) 309-6223 to talk through your specific Lennox setup.
Our Lennox Service Process – Step by Step
- 1
Diagnosis: We inspect the full duct path from the return grill to the supply registers. On Lennox systems, we pay special attention to the blower wheel, the evaporator coil, and any flex sections in attic runs. We measure static pressure before and after to confirm what we’re seeing.
- 2
Repair and cleaning: We clean the blower assembly, evaporator coil, and duct interior using negative-air machines from Nikro and rotary brush systems from Rotobrush. Damaged flex sections are replaced. All duct connections are sealed with mastic rated for Texas attic heat. No shortcuts on the inspection means no surprises on the invoice.
- 3
Test: We run the Lennox system through a full cycle, recheck static pressure, and confirm airflow at supply registers. If the numbers don’t meet spec, we address it before we leave.
- 4
Warranty: Every repair and cleaning is covered by the 365-Day Done Right Promise. If the work fails within a year, we return at no charge, including a free second visit. It’s in writing on every job.
See the difference
Before
After
Before
After
Before
AfterLennox Products We Service & Install in Dallas
We service the full Lennox residential lineup: the Dave Lennox Signature Collection (XC/XP series), the Elite Series (EL296V, XC16), and the Merit Series (ML14XP1, ML180). Beyond the equipment itself, we also offer Air Duct Cleaning services for the duct systems connected to them. That includes evaporator coil cleaning, blower cleaning, and duct sealing. We keep common OEM-compatible parts and sealing materials in local stock for faster turnaround on Dallas calls. When a specific part isn’t on the truck, we have local supply relationships that keep the wait short.
We Also Service These Brands
Hollis Air Duct Dallas works on more than Lennox. We clean and seal duct systems connected to Trane and Carrier equipment as well, and the same 365-Day Done Right Promise applies. What changes is the specific failure pattern we look for: Carrier coils foul differently than Trane heat exchangers, and a good tech knows the difference. Roy and the crew service all three brands regularly across Dallas.
FAQs – Lennox Air Duct Cleaning Service in Dallas
No. We are an independent Lennox service provider. We are not affiliated with or authorized by Lennox. That independence means we service your Lennox system based on what it actually needs, not on a manufacturer program’s incentives. It also means our warranty comes from us: the 365-Day Done Right Promise, in writing, on every job.
For critical components like blower motors and coils, yes, we use genuine Lennox OEM parts when they’re available. Those parts are engineered to the system’s tolerances. For duct sealing and insulation, we use high-grade aftermarket materials rated for Texas heat, because those often outperform what the factory shipped. If you want OEM-only on a specific repair, tell us when you call and we’ll price it that way.
Most Lennox duct cleanings and coil cleanings in Dallas take 3 to 5 hours for a typical 2,000-square-foot home. Larger homes with multiple returns or heavily contaminated systems can run longer. We schedule a specific window and arrive inside it. The price is written before work starts and does not move at the door. Call (361) 309-6223 for a time estimate on your specific home.
We service the Dave Lennox Signature Collection (XC/XP series), the Elite Series (EL296V, XC16), and the Merit Series (ML14XP1, ML180). We also clean and seal the ductwork connected to those systems. If your Lennox unit is older than those series, we still work on it. Dallas is full of post-war homes with Garland Lennox service needs and equipment that’s been running for decades.
Cleaning your air ducts or evaporator coil does not void a Lennox equipment warranty. Duct cleaning and coil cleaning are maintenance tasks, not modifications. Duct sealing with mastic is also a standard repair. What can void a warranty is someone bypassing safety switches or using the wrong refrigerant in an AC system. We don’t do that. If you have a specific warranty concern, call us and we’ll walk you through what’s covered.
Lennox air duct cleaning in Dallas typically runs $285 to $540 for a full system. A home under 1,500 square feet usually falls on the lower end. A two-story home with multiple returns and years of debris sits at the higher end. Coil cleaning or duct sealing is priced separately and quoted in writing before work starts. Call (361) 309-6223 for an exact quote – estimates are free, and the number we give you is the number on the invoice.
Book Your Lennox Service in Dallas, TX
If your Lennox system is moving less air than it should, or the airflow smells stale, or your electric bills keep climbing, we’ll inspect it and give you a written price before any work begins. Call (361) 309-6223 to schedule your Lennox duct cleaning or sealing in Dallas. A live person answers, 24/7.
Written by Roy Castellanos, Owner at Hollis Air Duct Dallas, serving Dallas since 2004.