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.
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Before
AfterLennox Air Duct Cleaning in San Jose, NY | CleanRun Air Duct Cleaning
We clean, repair, and seal Lennox ductwork throughout San Jose, and we’re an independent contractor, not a Lennox-authorized dealer. What separates our Lennox work here is simple: we know how wildfire smoke and 130°F attic heat degrade these specific systems in the South Bay. If you own a Lennox furnace or air handler in San Jose, call (806) 606-6902 for a written price before any work starts.
Why San Jose Residents Choose Us for Lennox Service
Tomas Reyes, our owner and lead technician, grew up in a Queens building where the ductwork hadn’t been touched since the Carter administration. He got into the trade because he wanted to know what people were actually breathing. That’s the lens we bring to every Lennox system in San Jose: camera inspection first, written scope second, no work until you’ve seen what’s inside.
We work on Lennox Elite Series, Merit Series, and Dave Lennox Signature Collection equipment daily across San Jose neighborhoods like Cambrian, Berryessa, and Alum Rock. We stock OEM Lennox coils, blowers, and heat exchangers where it matters, and we use commercial-grade aftermarket flex duct and mastic matched to original R-value for the rest. You get an honest recommendation, not a sales pitch for a new furnace. Our documented photo record on every visit means you’ll see the before and after of every duct run. For deeper context on the equipment we service, see Lennox sales & service.
Common Lennox Air Duct Cleaning Problems We Solve in San Jose
- Flex duct collapse from attic heat. San Jose summers push low-slope attic temperatures past 130°F, which degrades the adhesive and liner in original 1970s and 1980s Lennox flex duct. We regularly find duct runs that have pulled free at collar joints, quietly dumping conditioned air into the attic for years.
- Wildfire ash caked on evaporator coils. After SCU Lightning Complex and CZU smoke events, Lennox attic-mounted evaporator coils collect a dense mat of ash that chokes airflow. If your variable-speed Lennox blower has been short-cycling or running longer than it should, the coil is often the culprit.
- Debris-coated blower wheels in high-efficiency units. Lennox ECM blower motors are sensitive to contamination. When smoke and valley dust bypass a leaking return plenum, they coat the blower wheel and cause vibration, bearing noise, and premature motor wear. A dirty blower wheel on an SLP98V is a repair bill that didn’t need to happen.
- Return air plenum leaks at the furnace connection. Ranch-style San Jose homes from the 1960s and 1970s commonly have return plenums that leak where they meet the Lennox furnace. That gap lets unfiltered air pull straight into your system, which means you’re breathing whatever was in the attic.
- Inner liner shedding from aged flex duct. After decades of thermal stress, original Lennox flex duct inner liner can break down and shed particles that accumulate at supply registers. You’ll see it as a fine gray film on the register grille.
BeforeAfterLennox Service in San Jose: What Local Conditions Mean for Your Equipment
San Jose sits in a bowl-shaped valley ringed by the Santa Cruz Mountains to the west and the Diablo Range to the east. When fires ignite in those ranges, temperature inversions trap smoke at ground level and force it into residential HVAC intakes at concentrations you won’t see in San Francisco or other coastal cities where marine winds clear the air. That means a Lennox system in Berryessa or East San Jose after a smoke event is not just dusty, it’s carrying a measurable particulate load that settles into every plenum, coil, and duct run. Combined with the fact that most San Jose ranch homes still run original attic-mounted flex duct from the Nixon and Ford administrations, you get a specific failure pattern: high-efficiency Lennox furnaces with sealed combustion pull harder on already-restricted returns, and the blower ramps up to compensate. We’ve measured static pressure on Lennox variable-speed systems in San Jose that was double the manufacturer spec, purely because the ductwork was clogged and collapsing. This isn’t a generic filter change. It’s a systemic problem tied to this valley’s geography and housing stock.
For a full picture of the neighborhoods we cover, visit our San Jose service area page.
Lennox Models & Products We Service in San Jose
We service the full Lennox residential lineup: Elite Series gas furnaces like the EL296V and air conditioners like the XC14, Merit Series units including the ML180 furnace and 13ACX condenser, and Dave Lennox Signature Collection equipment such as the SLP98V and XC25. We also clean and service Lennox Healthy Climate filtration add-ons, including HC16 media cabinets and PureAir S systems. When a component is beyond repair, we use OEM Lennox parts where available. For flex duct, mastic, and insulation, we use commercial-grade aftermarket materials matched to the original R-value. We won’t sell you a new furnace to fix dirty ducts.
Lennox Service Pricing in San Jose
A full Air Duct Cleaning - San Jose for a typical Lennox system in a 1,200 to 2,000 square foot ranch runs between $450 and $800, depending on the number of duct runs, the condition of the flex duct, and whether we’re also cleaning the evaporator coil and blower wheel. If we find disconnected or crushed duct runs during the camera inspection, we’ll quote duct repair separately in writing before any work begins. Every Lennox job includes our video walkthrough of your ductwork, a written scope, and our 365-Day Done Right Promise: if it’s not right, we make it right. Call (806) 606-6902 for a free estimate with a written price.
Serving San Jose, CA - Our Local Coverage Area
We’re based in the San Jose 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 San Jose
Yes. Smoke particles finer than your filter’s MERV rating pass straight through, and the inversion layers that trap smoke in the Santa Clara Valley also force that particulate into every leak point in your ductwork, which is exactly where filters can’t help. Once smoke gets past the filter, it settles into the blower wheel, evaporator coil, and the first several feet of flex duct. Call (806) 606-6902 and we’ll show you the video before anything gets cleaned.
Attic temperatures in low-slope San Jose ranch roofs routinely exceed 130°F. That sustained heat breaks down the adhesive that holds the inner liner to the insulation and causes the outer vapor barrier to become brittle. The duct sags, cracks, or pulls free at the collar. We see this in Cambrian and Berryessa constantly.
If the inner liner is intact and the duct hasn’t collapsed, cleaning is the right call. If our camera inspection shows liner separation, tears, or a duct that’s been crushed flat by attic heat, replacement with commercial-grade flex matched to the original R-value is cheaper long-term than fighting a compromised system. We’ll show you the photo before we recommend either.
They do. Lennox variable-speed ECM blowers ramp up to overcome static pressure, and when ducts are clogged with ash and valley dust, the motor works harder and runs hotter. We’ve pulled blower wheels from San Jose Lennox SLP98V units that looked like they’d been dipped in soot. San Jose HVAC Cleaning for the ducts and coil is far less expensive than replacing an ECM motor. Call (806) 606-6902 for an exact quote.
We photograph every duct run before and after cleaning, and we test static pressure at the return and supply plenums to confirm airflow is within Lennox spec. You get the photo record as part of your job file. The photo tells you what’s in there. Everything else is just paperwork. Call (806) 606-6902 to schedule.
Service Areas Near San Jose
Our San Jose crews also serve homeowners across the wider region, including New York City, Los Angeles, Brooklyn, and Houston. If you’re outside San Jose but need the same documented Lennox ductwork service, we have teams in Lennox service in Austin and Lennox service in Jacksonville.
Book Your Lennox Service in San Jose Today
Call (806) 606-6902 for a free estimate on Lennox duct cleaning, evaporator coil cleaning, flex duct repair, or duct sealing in San Jose. We’ll give you a written price before any work starts, and we’ll show you the inside of your ducts before we touch them.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning, serving San Jose since 2013.