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.
Before
After
Before
After
Before
AfterLennox Air Duct Cleaning in Dallas, CA | Hollis Air Duct Cleaning
Lennox air duct cleaning in Dallas typically costs between $350 and $600 for a whole-home system, depending on the number of zones and whether flex duct repair is needed. We’re an independent Lennox service provider, not manufacturer-authorized, which means we answer to you rather than a corporate playbook. The Lennox systems here face a specific set of problems tied to Dallas’s post-1990s housing stock and 140°F attics, and Roy Castellanos and our crew have spent years learning exactly how those failures show up. Call (361) 326-5060 for a written estimate before any work begins.
If your Lennox unit has been pushing musty air, dust, or uneven temperatures through the house, the problem is rarely the furnace itself. It’s what’s happening inside the ductwork. We handle full Lennox sales & service knowledge without the dealership markup, and we cover every corner of the Dallas service area.
Why Dallas Residents Choose Us for Lennox Service
We’ve worked on Lennox systems in Dallas, TX long enough to know the difference between a Merit Series unit in a 2003 Plano tract home and a Dave Lennox Signature Collection system in an East Dallas bungalow. The equipment is different, the ductwork is different, and the failure points are different. Roy Castellanos grew up in Boyle Heights and trained through the sheet metal and air conditioning program at Los Angeles Trade-Technical College. He spent years doing hands-on duct work before starting Hollis Air Duct Cleaning, and that background shows in how we approach every Lennox job. We don’t guess. We inspect, measure static pressure, and show you what we found before we touch anything.
We’re independent, which matters more than most people realize. A manufacturer-authorized dealer has incentives to push certain parts or replacement timelines. We don’t. We use OEM Lennox parts for critical components like blower motors and control boards because that’s what protects your system. For flex duct and mastic sealants, we use high-quality aftermarket products rated for the attic temperatures Dallas throws at them. The price is written down before work starts, and every job - including our Dryer Vent Cleaning in Dallas - is covered by our 365-Day Done Right Promise. If it fails within a year, we come back at no charge.
Common Lennox Air Duct Cleaning Problems We Solve in Dallas
Here’s what we actually find when we open up Lennox systems in Dallas homes:
- Crushed and kinked flex duct in 1990s-2000s suburban homes. The post-1990s construction boom in Frisco and Plano left thousands of Lennox systems with flexible duct runs in unconditioned attics. Summer heat regularly pushes those attics past 140°F, and the inner liner of the flex duct delaminates or the duct gets crushed by storage boxes and foot traffic. Result: pressure imbalances, rooms that never cool, and fiberglass particles blowing into the living space.
- Undersized metal ducts in older East Dallas bungalows. Pre-war homes around White Rock Lake and Junius Heights often still have their original galvanized ducts. They were sized for a floor furnace or window units, not a modern Lennox central air system. The static pressure climbs, the blower motor works against resistance it wasn’t designed for, and the motor dies early. We see this pattern constantly.
- Condensate and mold growth on evaporator coils. Dallas’s humid subtropical climate means high dew points from May through September. When attic insulation is thin or the coil pan doesn’t drain properly, condensation sits on the Lennox evaporator coil and feeds mold growth. That musty smell in summer isn’t the ducts alone – it’s the coil, and it spreads through the entire supply side of the system.
- Lennox iComfort zoning damper failures. Multi-zone homes with iComfort communicating systems often develop damper actuator failures. One bedroom gets blasted with cold air while the living room stays warm. The system compensates by running longer, which increases duct leakage and pulls more attic dust into circulation.
- Insulation fibers pulled into the air supply. This ties back to the flex duct problem. When attic duct runs separate at the seams or the inner liner fails, the negative pressure on the return side pulls loose attic insulation into the ductwork. In Dallas, blown fiberglass and cellulose are standard attic insulation, so the problem shows up as fine dust accumulating on furniture within days of cleaning.
Lennox Service in Dallas: What Local Conditions Mean for Your Equipment
The single biggest factor shaping Lennox duct work in Dallas is what the post-1990s suburban construction boom left behind. In neighborhoods across Frisco, Plano, and North Dallas, builders installed Lennox systems with flexible duct runs stretched through unconditioned attics. Those attics regularly exceed 140°F from June through August. The heat doesn’t just make the ducts warm – it accelerates the breakdown of the flex duct’s inner liner, causing it to delaminate and release fiberglass particles directly into the air supply. That’s not a slow process. We’ve inspected systems in Frisco where the liner was brittle and peeling within ten years of installation. A company offering Air Duct Cleaning in Dallas might just vacuum the registers and call it done. We look at the duct material itself, because in Dallas the problem is often structural, not just dirty. Clean ducts, straight answers – that’s the whole job.
In one 1998 Frisco home, our crew inspected a Lennox Elite system and found the flex duct in the attic had collapsed from years of heat exposure. The master bedroom was being flooded with insulation fibers every time the AC kicked on. We replaced the damaged runs with high-temperature-rated flex duct and sealed the plenum with mastic. Airflow returned to normal, and the dust problem disappeared. That’s the difference between cleaning what’s dirty and fixing what’s broken.
Lennox Models & Products We Service in Dallas
We service the full range of Lennox equipment across Dallas: Merit Series entry-level systems, Elite Series mid-range units, and Dave Lennox Signature Collection high-end systems with iComfort communicating controls. Each line has its own failure profile. Merit units in tract homes tend to have the most flex duct issues because they went into the highest-volume construction periods. Signature Collection systems are more sophisticated, which means zoning dampers and communicating thermostats add complexity. We keep common replacement parts stocked locally: flex duct rated for high temperatures, mastic sealant, registers, and plenum components. For critical parts like Lennox blower motors and control boards, we order OEM and schedule around delivery. No guesswork, no generic parts jammed into a system that doesn’t want them.
Lennox Service Pricing in Dallas
Air duct cleaning for a typical single-zone Lennox system in Dallas runs $350 to $450. A two-zone system in a suburban home typically falls between $450 and $600. If flex duct needs replacement or duct sealing is required, that’s quoted as a separate line item before work begins, based on linear footage and accessibility. A full-system duct cleaning with evaporator coil cleaning on a multi-zone Lennox iComfort setup can reach $600 to $800. What drives the cost: the number of zones, the age and condition of the flex duct, whether the evaporator coil needs pulling, and how accessible the attic is. You get a written price before any work starts, and it doesn’t move at the door. Call (361) 326-5060 for a free estimate.
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
In Dallas’s humid climate, condensation forms on the Lennox evaporator coil when attic insulation is thin or the drain pan doesn’t slope properly. That moisture feeds mold and bacteria, and the musty smell gets distributed through the ductwork every time the fan runs. The fix is cleaning the coil and correcting the drainage, not just spraying deodorizer into the vents. Call (361) 326-5060 and we’ll inspect the coil before recommending anything.
Yes, but we inspect it first. Flex duct in Frisco, Plano, and other post-1990s Dallas suburbs often has a damaged inner liner from attic heat. If the liner is intact, rotary brush cleaning works well. If it’s delaminated or crushed, cleaning won’t fix it – the duct needs replacement. We’ll show you photos and give you a written price for either path before we start.
Usually, yes. Uneven airflow in Dallas Lennox systems comes from one of three things: crushed or kinked flex duct in the attic, a failed iComfort zoning damper, or undersized metal ducts in older homes. We diagnose it by measuring static pressure and inspecting the duct runs. You get a straight answer about what’s wrong and what it costs to fix. Call (361) 326-5060 to schedule an inspection.
In Dallas, every 3 to 5 years is the practical range, but it depends on conditions. Homes near construction, homes with pets, and homes where the attic flex duct has started degrading will need it more often. Spring pollen season and fall ragweed add particulate load. We’ll give you an honest interval after inspecting your system, not a calendar-based upsell.
Yes, when the inspection turns up a problem. We use OEM Lennox parts for critical components like blower motors and control boards. For flex duct, mastic sealant, and registers, we use high-quality aftermarket products built for high-heat attic environments. You approve every part and every price before we install anything. Call (361) 326-5060 for a written quote.
Service Areas Near Dallas
We serve Dallas and the surrounding communities, including Oak Cliff, East Dallas, Frisco, Plano, and North Dallas. If you’re in the broader metro area, we’re a short drive away. For homeowners further out, we also offer Lennox service in Brooklyn and Lennox service in Cleveland through our network locations.
Book Your Lennox Service in Dallas Today
If your Lennox system is blowing dust, musty air, or uneven temperatures through your Dallas home, the ductwork is the first place to look. Call (361) 326-5060 for a free estimate. We show up on time, price it in writing before work starts, and stand behind it for a full year.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Dallas since 2004.