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 North San Jose, CA
We provide independent Lennox air duct cleaning and repair across North San Jose, from the tract-home neighborhoods to the R&D parks off North First Street. What makes our Lennox work different here is that we treat duct cleaning as part of a larger system diagnosis: disconnected runs, leaking joints, and clogged coils are common in this part of the valley, and cleaning without checking for those problems leaves half the job undone. If your Lennox system is moving less air than it should, or if you’re seeing dust return within days of cleaning, call (855) 506-8636 and we’ll walk through what’s likely happening before we ever schedule a visit.

Our history with Lennox equipment goes back to older residential furnaces and the light-commercial units found throughout North San Jose. We’re not a manufacturer-authorized shop, and we’re straightforward about that. What we offer is hands-on familiarity with how Lennox duct layouts, coil designs, and airflow characteristics behave over time in this specific climate. For anyone managing a home or building in North San Jose, that matters more than a logo on a van.
Why North San Jose Residents Choose Us for Lennox Service
Rodney Soto, our owner, grew up near Berryessa and spent years working the mechanical side of South Bay homes before starting Elmwood Air Duct Cleaning in 2018. He completed his HVAC and building systems coursework at Evergreen Valley College, then put in well over a decade in the trade learning how residential duct systems actually fail, not just how to clean them. That background shapes how we approach every Lennox job.
We run Rotobrush rotary-brush systems and Nikro HEPA-rated vacuums, the same class of equipment you’d find on commercial and industrial jobs. That matters in North San Jose, where the dust isn’t just lint and skin cells. Freeway particulate from 101, 880, and 237, plus wildfire smoke funneled down the valley by the Diablo Winds, leaves a fine abrasive residue that a shop-vac setup simply recirculates back into the room. We also repair what we find. If a run is crushed or a joint has failed, we seal or replace it rather than cleaning around the problem and calling it done.
See what’s inside your ducts before and after. We photograph the job, and you’ll know exactly what was pulled out and what the system looks like afterward. That’s the kind of transparency that keeps our phone ringing in a city full of disposable coupon offers.
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 North San Jose
- Collapsed flex duct on Merit Series furnaces. In older Lennox Merit Series installations with original flex duct, we commonly find disconnected or crushed runs behind walls. Those create pressure imbalances that pull in fine ash from wildfire smoke events. The fix is often a combination of cleaning, run replacement, and joint sealing.
- Clogged evaporator coils on Elite Series air handlers. Lennox Elite Series air handlers sit in the airstream all day, and in North San Jose that airstream carries freeway soot and seasonal smoke. When coils load up with that particulate, airflow drops and the coil can freeze. We clean the coil and the surrounding ductwork together.
- Leaking sheet-metal ducts in 1960s-1980s tract homes. Many older North San Jose homes still run original sheet-metal runs with failing mastic and gapped joints. Road dust and ash infiltrate the returns at every seam. We find the leaks, seal them, then clean the system so it stays clean.
- Dust-loaded blower wheels on Signature Collection systems. Dave Lennox Signature Collection units with variable-speed blowers move a lot of air, and when returns are compromised, the blower wheel and heat exchanger collect dust faster than on a single-speed system. That reduces efficiency and creates uneven airflow through the house.
- Post-fire-season odor retention. After a heavy smoke season, the duct lining and filter media in Lennox systems can hold a persistent smoky smell. Cleaning the full run, not just the registers, is the only way to get that out. Our HEPA setup captures the fine ash rather than pushing it back into the living space.
Lennox Service in North San Jose: What Local Conditions Mean for Your Equipment
North San Jose sits in a rough spot for return ducts. The Diablo Winds push wildfire smoke and ash from the Santa Cruz Mountains and East Bay hills straight into the valley, and this part of the city also sits between three major freeway corridors that generate a constant load of fine particulate. The result is a dust profile that’s finer and more abrasive than what most of the country deals with. In practice, that means Lennox return ducts here often trap a mix of ash and road dust that packs into corners, clings to the duct lining, and grinds against blower components. HEPA-equipped cleaning isn’t a luxury in this area, it’s the difference between removing that material and redistributing it through the house. We see it most clearly in the 1970s tract homes near Alum Rock and the R&D buildings around Moffett Park, where a single fire season can load up a system that was cleaned only a year earlier.
In a 1970s tract home near Alum Rock, our crew cleaned a Lennox Merit Series furnace with original flex duct that had collapsed and was pulling in ash from the previous fire season. After sealing the joints and replacing a crushed run, airflow improved dramatically and the homeowner reported less dust and no more smoky odors. That’s the standard we hold for every Lennox job in North San Jose: find what’s actually wrong, fix it, then clean what remains.
Lennox Models & Products We Service in North San Jose
We work on the full range of Lennox equipment found in North San Jose homes and buildings. That includes Merit Series gas furnaces like the ML180 and ML193, the variable-speed Elite Series air handlers and furnaces, and the high-efficiency Dave Lennox Signature Collection systems such as the SLP98 and XC25. Our duct cleaning and repair scope covers the residential and light-commercial installations those units typically serve.
When parts are needed, we use OEM Lennox components when they’re available and make financial sense. For many duct components and consumables, we rely on quality aftermarket equivalents that meet or exceed the original specifications. We’ll tell you which is which and why, then let you decide. The honest repair-versus-replace conversation is part of how we work: if a duct run or major component is failing from age or damage, we’ll explain whether a targeted repair or a full upgrade makes more sense for your North San Jose home or building.
See the difference
Before
After
Before
After
Before
AfterLennox Service Pricing in North San Jose
Duct cleaning in this area typically falls into a whole-system range rather than a per-vent price, and that’s intentional. Per-vent pricing invites the kind of lowball-then-upsell behavior this industry is known for. We quote one flat price per system, agreed before any work starts, based on the size of the home or building, the number of returns, the condition of the ductwork, and whether sealing or repair is needed alongside the cleaning.
| Service | Typical Range |
|---|---|
| Residential duct cleaning (whole system) | $450 – $900 |
| Light-commercial duct cleaning (per unit) | $800 – $2,500 |
| Duct sealing (with cleaning) | $300 – $1,200 additional |
| Coil cleaning (with duct service) | $150 – $400 additional |
These are estimates, not quotes. The written estimate sets the final price, and it’s free. Call (855) 506-8636 and we’ll walk through your system size and what you’re seeing before we ever put a number on paper.
Serving North San Jose, CA – Our Local Coverage Area
We serve North San Jose 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 North San Jose
Wildfire smoke pushes fine ash into return ducts, where it packs into corners, clings to the duct lining, and loads up filters and coils far faster than normal household dust. A Lennox system in North San Jose can accumulate a full season’s worth of that residue in a matter of weeks, which is why we recommend checking returns and filters after any significant smoke event. Call (855) 506-8636 to schedule an inspection, and we’ll tell you whether cleaning is warranted or if you can hold off.
Yes. Original flex-duct and sheet-metal runs from that era frequently have crushed sections, disconnected joints, and deteriorating mastic. Those failures let dust and ash bypass the filter entirely and enter the airstream. If your home near Alum Rock or North Valley has never had its ductwork inspected, there’s a good chance the system is pulling in more than it should.
We can. Our Rotobrush equipment and HEPA vacuum setup work on light-commercial systems, including Lennox rooftop units serving the office and R&D parks around Moffett Park and First Street. We schedule this work around your building’s operating hours, and we’re familiar with the access and containment challenges those buildings present.
Don’t run the system hard. A clogged evaporator coil reduces airflow and can freeze, which puts strain on the compressor. Shut the system down and call us at (855) 506-8636. We’ll inspect the coil and the surrounding ductwork, clean both, and check whether the soot has also loaded up the blower wheel.
Yes, duct sealing is a core part of our repair scope. We clean the system, then locate and seal leaking joints and replace any compromised runs. That’s often the difference between a system that stays clean and one that’s pulling in road dust from 101 and 880 within a month. Call (855) 506-8636 for a free estimate on cleaning plus sealing.
Service Areas Near North San Jose
Beyond North San Jose itself, we serve Berryessa, Alviso, Downtown San Jose, South San Jose, Spartan Keyes, and East San Jose. If you’re in one of those neighborhoods and own Lennox equipment, the same team, the same equipment, and the same honest assessment apply.
Book Your Lennox Service in North San Jose Today
If you don’t know what’s in your ducts, you’re guessing at your air quality. Call (855) 506-8636 for a free estimate on Lennox duct cleaning, sealing, or repair in North San Jose. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Written by Rodney Soto, Owner at Elmwood Air Duct Cleaning, serving North San Jose since 2018.