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 Woodland Hills, CA
Independent Lennox air duct cleaning across Woodland Hills costs roughly $450 to $900 for a full system and usually takes a half day. The reason our work here lands differently comes down to one local reality: Woodland Hills canyon winds push chaparral grit and wildfire ash into attic ductwork, and Lennox air handlers show that debris in very specific ways. We know those failure points because we’ve opened enough Lennox returns in this valley to see the pattern repeat. Call (833) 589-9715 for a free estimate.
We’re Onyx Duct Cleaning, an independent service provider. We are not manufacturer-affiliated or authorized by Lennox, and that’s exactly why our Lennox work in Woodland Hills is built around what the ductwork actually needs, not a brand program. If your system runs, we clean it. If it leaks, we fix it. That’s the whole scope.
Why Woodland Hills Residents Choose Us for Lennox Service
Woodland Hills homeowners with Lennox equipment tend to call us after noticing something specific: fine grit on the supply registers after a Santa Ana event, a musty smell when the AC kicks on, or a bedroom that never seems to get airflow. These are not mysteries to us. Stan Merrick, our owner, spent years in residential and light commercial HVAC service across the San Fernando Valley before starting Onyx Duct Cleaning in 2013, and he studied air distribution at Los Angeles Valley College. That background means we diagnose Lennox duct problems as airflow problems, not just as “dirty ducts.”
We run Rotobrush contact-cleaning systems and Nikro HEPA vacuums, the same platforms restoration and abatement contractors use. That matters more in Woodland Hills than in most places, because the debris sitting in your ducts isn’t just household dust. It’s wind-driven grit from the Santa Monica Mountains. Our equipment removes it at the duct wall and contains it, rather than agitating it back into the living space. You get a clear before-and-after look at your system, because we video-inspect and show you what we found. No mystery, no upsell.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
Common Lennox Air Duct Cleaning Problems We Solve in Woodland Hills
- Grit-loaded return runs on high-efficiency Lennox furnaces. Lennox high-efficiency furnaces use sealed combustion, which means the return path is the main entry point for attic debris. When older Woodland Hills homes have leaky return ducting, fine dust migrates from the attic into the secondary heat exchanger area, then recirculates through supply vents. We see this on Merit and Elite series systems regularly.
- Failed mastic at Lennox air handler connections. Original 1950s to 1970s metal trunk-and-branch ductwork in Woodland Hills ranches was sealed decades ago. That sealant fails, particularly where the supply plenum meets a Lennox cased coil in the attic. Canyon dust and pollen get pulled in at those joints, and suddenly your supply registers are blowing chaff from the hillside.
- Loose flex-duct collars after remodel work. Hillside homes off Topanga Canyon Boulevard have been renovated many times over. We frequently find disconnected return flex runs behind attic access hatches, where someone moved a duct during a remodel and never reattached it. A Lennox horizontal air handler in that attic will pull unfiltered air from the unconditioned space every time the blower runs.
- Evaporator coil loading from near-year-round runtime. Woodland Hills summers routinely push past 100°F. Your Lennox condenser runs more hours per year than most systems in the country. The coil collects dander, ash, and fine dust, reducing airflow across the coil face. On Dave Lennox Signature Collection systems with variable-speed blowers, this shows up as higher static pressure and louder operation.
- Ash intrusion after wildfire season. When nearby wildfires introduce fine ash into the air, that ash settles in ductwork and on the blower wheel. Weeks later, you turn the system on for a hot afternoon and smell smoke. The ash is in the ducts, not in the air. A full system clean with HEPA capture resolves it.
Lennox Service in Woodland Hills: What Local Conditions Mean for Your Equipment
Woodland Hills sits in one of LA’s windiest canyon-mouth corridors, and the 91364 and 91371 hillside homes south of Ventura Boulevard take the brunt of it. What that means for a Lennox owner is specific. Your attic ductwork is under negative pressure on the return side every time the blower spins. When Santa Ana winds blow grit against the roof vents and attic soffits, any gap in the ductwork becomes an intake. The debris shows up as coarse material at the return grille, not the fine household dust most people expect. We pulled open a return on a hillside street off Topanga Canyon Boulevard and found leaf fragments and canyon grit packed against the filter rack, with two disconnected flex runs and a failed mastic seam on the metal trunk. That’s a Lennox system running hard in a wind corridor, inhaling the hillside. We reconnected the flex, sealed the trunk and air handler connections, cleaned the full system, and the supply air ran clean on the next hot afternoon. That’s the difference between cleaning around a problem and actually resolving it.
Lennox Models & Products We Service in Woodland Hills
We clean and service ductwork across the full Lennox residential range: Merit Series furnaces and air conditioners, Elite Series systems, Dave Lennox Signature Collection high-efficiency setups, and Lennox Healthy Climate air cleaners and filtration accessories. Our focus is the air pathway itself. If your Lennox system has a cased coil, a filter rack, or an attic air handler, we service the ductwork connected to it. We lean on genuine Lennox OEM parts for anything that touches airflow calibration, like air handler panels, filter racks, and coil cabinet gaskets. For sealed flex duct, mastic, and other sealing materials, we use quality aftermarket equivalents where OEM isn’t necessary for performance. We don’t push replacement. If the ductwork is structurally sound, we repair and seal it.
See the difference
Before
After
Before
After
Before
AfterLennox Service Pricing in Woodland Hills
Full Lennox system duct cleaning in Woodland Hills typically runs $450 to $900, depending on system size, the number of returns, and how long the ductwork has gone without service. Duct sealing and repair are quoted separately after a video inspection. A disconnected flex run is different from a failed trunk seam, and the price reflects the job, not a package. We never price per vent. You get one flat price per system, agreed before work starts. Your written estimate sets the final number. Call (833) 589-9715 for a free estimate and we’ll walk you through what your Lennox ductwork actually needs.
Serving Woodland Hills, CA – Our Local Coverage Area
We serve Woodland Hills and nearby communities. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
FAQs – Lennox Air Duct Cleaning in Woodland Hills
Yes, and we see it constantly in hillside homes south of Ventura Boulevard. If the return plenum, flex collars, or mastic seals have any gaps, the negative pressure from your Lennox blower will pull attic air in, and canyon winds supply more grit than the average attic holds. We video-inspect the return path specifically to find those entry points. Call (833) 589-9715 and we’ll map exactly where your system is pulling from.
Fine ash from nearby wildfires settles into the ductwork, the blower wheel, and the evaporator coil during smoke events. When you turn the system on weeks later, that ash gets drawn back into the airstream. It’s in the ducts, not in the air. A full system clean with HEPA capture removes it. Call (833) 589-9715 for an estimate.
In most cases, yes. Original rigid metal trunk-and-branch ductwork is often structurally sound even when the mastic at the joints has failed. We clean the surfaces, remove the failing sealant, and apply new mastic at the seam. If the metal is rusted through or crushed, replacement is the honest answer, but we repair before we recommend replacement. Call (833) 589-9715 and we’ll inspect yours.
Every three to five years for most homes, but hillside properties near Topanga Canyon Boulevard with older ductwork may need attention every two or three years. The combination of near-year-round AC runtime and seasonal wind-driven grit loading means Woodland Hills Lennox systems accumulate debris faster than systems in calmer parts of the valley. A video inspection will tell you exactly where your system stands. Call (833) 589-9715 to schedule one.
If the coil face or the return path is loaded with debris, yes. A restricted return path reduces airflow across the coil, which lowers cooling capacity and raises static pressure. Cleaning the ductwork removes that restriction. If the coil itself is loaded, we’ll document it and advise you on the right next step. The point is getting the full system back to proper airflow, not just making the visible parts look clean.
Service Areas Near Woodland Hills
We serve Calabasas, Van Nuys, Sherman Oaks, Toluca Lake, and North Hollywood. If your Lennox system lives anywhere in the San Fernando Valley, we can get to it.
Book Your Lennox Service in Woodland Hills Today
Clean air isn’t a luxury, it’s just what the system is supposed to deliver. If your Lennox ductwork is blowing grit, pulling attic air, or just hasn’t been cleaned in years, we’ll show you exactly what’s going on. Call (833) 589-9715 for a free estimate. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Written by Stan Merrick, Owner at Onyx Duct Cleaning, serving Woodland Hills since 2013.