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 Santa Clarita Homeowners Choose Lennox Air Duct Cleaning
We provide independent Lennox service in Santa Clarita, including air duct cleaning throughout Valencia, Stevenson Ranch, Saugus, Canyon Country, and Newhall. Our crews work inside Lennox ductwork, evaporator coils, and air handlers every week, which means we know how these systems behave in this valley’s heat and dust better than a generalist ever could. We are not factory-affiliated or authorized by Lennox, and we say that plainly so there’s no confusion. What we offer is deeper hands-on familiarity with Lennox equipment than most shops in this area, backed by a written price before we start and a 365-Day Done Right Promise. Call (661) 523-0295 and we’ll talk you through it.
Why Trust Hollis Air Duct Santa Clarita for Your Lennox Air Duct Cleaning?
Roy Castellanos grew up in East Los Angeles and learned HVAC fundamentals at Los Angeles Trade-Technical College before moving into air duct cleaning full time. Over the years he and our crew have worked jobs across Santa Clarita, from older ranch-style homes near Saugus to newer builds off Tournament Road in Valencia. That matters because Lennox systems in this valley don’t fail the way they do in coastal towns. The dry heat, the Santa Ana winds, the wildfire ash from the Angeles National Forest, all of it ends up inside the ductwork. A technician who has only seen Lennox equipment in a mild climate won’t recognize the baked-on soot pattern a Lennox service in Sylmar or Santa Clarita heat exchanger develops by midsummer. Our techs do.
Every Lennox job we take gets the same treatment: a written price before any work begins, background-checked uniformed technicians, and a full year of coverage under our 365-Day Done Right Promise. If something isn’t right, we come back at no charge. That’s The Garrison Standard, and it applies whether we’re cleaning a Merit Series flex-duct run in Canyon Country or a Signature Collection air handler in Valencia.
Styles & brands we work with
Common Lennox Air Duct Cleaning Problems We Fix in Santa Clarita
- Dense evaporator coils starving airflow. Lennox evaporator coils are built with tighter fin spacing than many competing brands, which makes them efficient but also makes them trap fine dust aggressively. In Santa Clarita’s semi-arid climate, we routinely see 30 to 40 percent airflow reduction within two years of neglect. The fix is careful evaporator coil cleaning using negative-air extraction and the right coil-safe cleaners, never a pressure washer.
- Variable-speed blower motors recirculating micro-particulates. The Elite and Signature Collection systems use variable-speed blowers that run longer at lower speeds. That’s great for comfort and efficiency, but it means airborne dust keeps circulating through the supply ducts, settling in low-velocity sections and causing uneven room temperatures and a musty smell that comes and goes. A standard cleaning won’t address it. The blower wheel itself has to come out and get hand-cleaned, and the supply plenum needs a proper vacuum-out.
- Baked-on soot and lint on heat exchangers. Lennox heat exchangers, particularly in the EL296V and ML180 lines, develop a hard layer of baked lint and ash over time. This layer insulates the metal, reduces heat transfer efficiency, and can trip the high-limit switch, which shuts the furnace down. Homeowners call us thinking the furnace is dead. Often it’s just a heat exchanger that needs the soot layer removed and the blower compartment cleaned.
- Flex duct connections degrading in attic heat. Santa Clarita attics regularly hit 130 degrees in summer. The flex duct connections on Lennox air handlers degrade faster in that kind of sustained heat than anywhere along the coast. When the connection fails, attic insulation and dust get pulled into the return side, and conditioned air leaks out. We find this constantly in older Valencia and Canyon Country homes where the original flex duct is still in place from the 1990s.
- Construction debris left in ductwork from the building boom. In master-planned communities like Stevenson Ranch and Newhall, we still vacuum out original construction debris: drywall dust, sawdust, and sometimes worse. These homes were built fast, and plenty of them shipped with debris inside the ducts. Decades later, it’s still there, breaking down and blowing through the house every time the Lennox blower kicks on.
Lennox Parts & Our Repair-vs-Replace Approach
We use OEM-spec materials on every Lennox job. For ductwork repairs we use UL-listed mastic sealants and rigid metal that matches Lennox’s original design, never quick-fix tape that peels off in an attic by July. When a component is beyond safe service, we say so and show you exactly what we’re seeing, usually with video evidence from our inspection cameras. We don’t sell replacement parts someone doesn’t need. Roy has said it on plenty of job sites: the goal is to leave your Lennox system moving air the way it did when it was new, not to pad an invoice with parts you won’t benefit from. If you want to talk through what a repair would cost versus what it would take to replace, call (661) 523-0295 and we’ll walk you through both numbers in plain language.
We keep common Lennox-compatible materials on our trucks: flex duct in standard residential diameters, rigid elbows, mastic, and the coil cleaners rated for dense Lennox fin spacing. That means most jobs in Santa Clarita don’t wait on a parts run.
Our Lennox Service Process – Step by Step
- 1
System diagnosis and static pressure check. Before we touch anything, we measure static pressure across your Lennox system. High static pressure on a variable-speed blower is the single most common cause of the airflow complaints we hear. We also run a video inspection on the return and supply ducts so we can show you exactly what’s inside.
- 2
Evaporator coil and blower wheel cleaning. The coil gets cleaned with negative-air extraction and coil-safe chemicals, not brute force. The blower wheel comes out when it needs to, especially on Elite and Signature variable-speed units that accumulate fine dust on the wheel vanes and throw the motor off balance.
- 3
Duct cleaning and sealing. We clean the full duct run using professional-grade negative-air machines from Nikro and rotary brush systems from Rotobrush. Any flex duct that’s collapsed or disconnected at the air handler gets replaced or re-secured with rigid metal and mastic sealant so it doesn’t fail again in Santa Clarita’s attic heat.
- 4
Testing and verification. We re-measure static pressure, verify airflow at the registers, and check that the system is pulling and pushing air evenly. Last week our crew serviced a Lennox XC25 in Valencia where the homeowner complained of low airflow upstairs. Video inspection showed a 14-inch flex duct collapsed at a sharp bend, pulling attic insulation into the air handler. We repaired the flex with a rigid metal elbow, sealed all joints with mastic, and deep-cleaned the evaporator coil. Static pressure dropped from 0.9 to 0.5 inches, and the upstairs rooms finally matched the downstairs temperature.
- 5
Written warranty coverage. Every job gets the 365-Day Done Right Promise in writing. If something fails within the year, we return and make it right at no charge. That includes a free second visit. No fine print, no negotiation.
See the difference
Before
After
Before
After
Before
AfterLennox Products We Service & Install in Santa Clarita
We service and clean ductwork, coils, and air handlers across the full Lennox residential line. That includes the Merit Series (ML14XC1, ML180), the Elite Series (EL296V, XC16), and the Signature Collection (SLP98V, XC25), along with Dave Lennox Signature systems running S30 thermostats. We also handle duct sealing and video inspection on every one of those platforms. If you’re not sure which series your system is, the model number on the rating plate tells us everything we need. Call (661) 523-0295 and we’ll help you identify it.
We Also Service These Brands
Our Lennox depth doesn’t mean we’re a one-brand shop. We service and clean duct systems for Trane and Carrier equipment throughout Santa Clarita as well. Most of the homes in this valley have one of these three brands, and our crews work on all of them every week. Clean ducts move clean air. Everything else is just sales talk.
FAQs – Lennox Air Duct Cleaning Service in Santa Clarita
No. We are an independent air duct cleaning and duct sealing company, not a Lennox factory-authorized dealer or service provider. That independence is deliberate: our recommendations are based on what your home’s airflow and your system’s longevity actually need, not on what a manufacturer’s warranty playbook says we should push. Our techs know Lennox equipment intimately from thousands of hours working inside it across Santa Clarita, but we do not represent the factory. If you want to talk through what that means for a specific repair, call (661) 523-0295.
We use OEM-spec materials on everything, including duct repairs where we match Lennox’s original rigid metal design and apply UL-listed mastic sealant, but we do not swap in factory-branded components as a matter of course. The honest answer is that for air duct cleaning and duct sealing, the materials that matter are the sealant, the metal, and the flex duct. Those are all available in OEM-spec or better quality regardless of brand badge. When a component like a coil or a blower motor needs replacement, we’ll give you a straight answer about what your system actually needs and what the cost difference is.
That louder sound after a duct cleaning almost always means static pressure changed. A properly cleaned and sealed duct system drops static pressure, which lets the variable-speed blower move more air at the same RPM. If the blower wasn’t re-calibrated or the ductwork wasn’t sealed correctly, the motor can hunt or run faster than it did before. We’ve seen this most often on Elite and Signature systems where a technician cleaned the ducts but didn’t address the blower wheel or the return-side restrictions. On our jobs, we re-measure static pressure after every clean and verify the blower is running where it should be. If you’ve had this happen, call (661) 523-0295 and we’ll diagnose it.
Yes, and Santa Clarita’s position next to the Angeles National Forest makes this a real issue. Wildfire ash is alkaline and highly abrasive. When it settles on a Lennox evaporator coil and sits there through cooling cycles, the moisture from condensation turns that ash into a corrosive paste that etches the aluminum fins. Left long enough, it permanently reduces coil efficiency and can lead to pin-hole leaks. The fix is getting the coil cleaned before the ash layer bakes on, which is why we recommend a post-fire-season inspection and Air Duct Cleaning services for any Lennox system in Santa Clarita that ran during smoky conditions.
No. Routine air duct cleaning and evaporator coil cleaning do not void a Lennox manufacturer warranty, provided the work is done without damaging the equipment. That last part matters. A careless cleaning that bends coil fins, damages the blower wheel, or floods the motor with cleaner absolutely can cause warranty claims to be denied. That’s why we use negative-air extraction instead of pressure, coil-safe chemicals, and hand-cleaning procedures on blower wheels. We work the way a warranty inspector would want to see the job done. If you’re ever unsure whether a cleaning is warranty-safe for your specific Lennox model, call (661) 523-0295 and we’ll tell you what we’d recommend.
For a typical single-family home in Santa Clarita with a Lennox central forced-air system, a full duct cleaning with evaporator coil cleaning and blower wheel service runs roughly $450 to $850 depending on the number of returns, the length of the duct runs, and how much access our crew has to the air handler. Homes in Valencia and Stevenson Ranch with larger square footage and multiple zones typically land on the higher end, while Lennox repair in Northridge and surrounding areas follows similar pricing. Duct sealing with mastic adds $200 to $500 depending on how many joints need attention. We quote one written price per system before any work starts, and that number does not move at the door. For an exact quote on your Lennox system, call (661) 523-0295 and we’ll walk through the specifics. Estimates are free.
Book Your Lennox Service in Santa Clarita, CA
If your Lennox system is moving less air than it should, smelling off, or just hasn’t been cleaned since the last wildfire season, call us. Roy Castellanos and the crew at Hollis Air Duct Santa Clarita will give you a written price, show up inside the window, and stand behind the work for a full year. Call (661) 523-0295 for a free estimate.
Written by Roy Castellanos, Owner at Hollis Air Duct Santa Clarita, serving Santa Clarita since 2004.