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 South San Francisco, CA
We clean Lennox in San Bruno and across South San Francisco, and the work here looks different than it does ten miles south. The SFO flight path and the industrial corridors put a fine black soot into return air that most Peninsula cities never see, and it settles inside Lennox cabinets in ways a standard filter can’t stop. If you own a Lennox furnace or air handler in the 94080 or 94083 zip codes, call (833) 620-5944 and we’ll show you exactly what’s moving through your ductwork before we touch a brush.
Why South San Francisco Residents Choose Us for Lennox Service
Bruce Lowry, our owner, has spent nearly two decades pulling return grilles and opening plenums on Lennox equipment throughout the Bay Area. He learned air handling at Laney College in Oakland, then spent years working inside the tight attic and closet spaces that define South San Francisco’s post-WWII housing stock. That experience matters here, because Lennox systems in this city collect a specific kind of contamination: jet exhaust particulate mixed with fog moisture, forming a sticky film that behaves differently than ordinary household dust. We’re an independent shop. We’re not authorized or sponsored by Lennox, which means we look at your system the way it actually runs in your home, not the way a manufacturer manual assumes it should. We service the full Lennox line with OEM-compatible parts where cabinet sealing matters and honest recommendations where it doesn’t.
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 South San Francisco
Here’s what we find when we open Lennox systems in this city, and why each problem shows up the way it does:
- Black soot film on evaporator coils in horizontal air handlers. Lennox Elite and Merit horizontal units mounted in tight Serra Highlands attic spaces pull return air through short plenums. SFO jet exhaust particulate, fine enough to slip past a standard filter, coats the upstream coil face. Airflow drops before the blower ever complains. We wash the coil and the difference is immediate.
- Separated gaskets on older G40 and G60 cabinets. The foil-faced seams on these older Lennox cabinets dry out and separate in South San Francisco’s damp marine air. Once they separate, fog-moistened particulate bypasses the filter entirely and packs onto the blower wheel. We pull the blower, clean the wheel, and seal those seams with mastic so the air path is tight again.
- Boxed-in return plenums trapping debris against the coil. The ranch homes around Grand Avenue were built mostly in the 1940s and 50s, and many Lennox retrofits from the 70s and 80s squeezed into spaces that were never meant for modern air handlers. The return plenums are short and boxed-in, so debris that would flow through a longer run just piles against the coil face and restricts return static pressure. We scope and clean these return plenums as a separate step, because that’s where the restriction lives.
- Interior surface rust on original galvanized ducts. The cool, foggy air that sits over South San Francisco most of the year doesn’t push systems the way inland heat does, but it does leave a persistent dampness inside older metal ducts. That dampness roughens the galvanized surface, and the roughness is what makes soot and brake-lining particulate cling instead of traveling to the filter. Annual cleaning here is as much about corrosion control as it is about dust.
- Diesel-and-salt odor at the return grille. It’s a South San Francisco signature. The combination of jet exhaust and marine air creates a distinctive smell the moment you open a return grille in Avalon Park or Serra Highlands. That odor means the return side of your Lennox system is holding a sticky black film. Cleaning only the supply ducts won’t touch it.
Lennox Service in South San Francisco: What Local Conditions Mean for Your Equipment
South San Francisco sits directly under the SFO approach and alongside heavy industrial corridors, so the particulate that settles into return air here isn’t the gray household dust you’d find in San Mateo or Daly City. It’s fine black jet exhaust and brake-lining material, small enough to pass a standard one-inch filter and sticky from the fog that rolls through the 94080 and 94083 zip codes. That changes how we clean a Lennox system in this city. We scope return-side cleaning differently because the return plenum is where this black film accumulates first. In neighborhoods like Serra Highlands and Avalon Park, we routinely pull return grilles and find the first eighteen inches of duct lined with a film that smells like diesel mixed with salt air. If we only cleaned from the supply registers forward, we’d leave the worst contamination in place. That’s why our Lennox work in South San Francisco starts at the return side and works toward the unit, not the other way around.
Lennox Models & Products We Service in South San Francisco
We clean Lennox equipment across the full residential line: the Merit Series gas furnaces, the Elite Series furnaces and air handlers, the G40, G50, and G60 cabinets, and the Dave Lennox Signature Collection including SLP98 units and matched air handlers. Our approach on cabinet sealing, gaskets, filter racks, and coil components is to use OEM Lennox parts where fit matters, because an off-brand gasket on a G60 door won’t seat the way the original does. For commodity airflow hardware like flex connectors and register boots, we use quality aftermarket parts and pass the savings along. When a Lennox heat exchanger or coil reaches a point where cleaning won’t buy you meaningful years, we tell you straight. If sealing and cleaning will extend the system’s life, we make that call honestly too.
See the difference
Before
After
Before
After
Before
AfterLennox Service Pricing in South San Francisco
Air duct cleaning for a typical South San Francisco home runs between $450 and $900 for the full system, depending on square footage, the number of returns, and how heavily the return side is fouled. Evaporator coil cleaning on a Lennox air handler adds $150 to $300 when it’s accessible, and blower motor and wheel cleaning runs $120 to $250 when we’re already inside the cabinet. Older ranch homes around Grand Avenue with short, low-clearance ducts and boxed-in plenums often land at the higher end of the range because the access work takes longer. Every estimate is free, and we walk you through what we’ll do before we start. Call (833) 620-5944 for an exact quote on your Lennox system.
Serving South San Francisco, CA – Our Local Coverage Area
We’re based in the South San Francisco area and know this community well, with Lennox service in Burlingame also available nearby. Use the map below to see our service coverage – if you’re nearby, we can almost certainly help.
FAQs – Lennox Air Duct Cleaning in South San Francisco
It’s both, and that smell is specific to South San Francisco. Jet exhaust particulate from the SFO approach settles onto the evaporator coil face and into the return plenum, then mixes with fog moisture to create a sticky black film that carries a diesel-and-salt odor. The film sits on the coil and inside the return duct, so when the blower starts, the air passing over it picks up the smell. Cleaning the return run, the plenum, and the coil face removes it. Call (833) 620-5944 and we’ll scope it before quoting.
It does, but slowly. The cool marine air keeps systems running less than they would inland, so the rust is surface-level rather than structural in most cases. What it does do is roughen the inside of original galvanized ducts from the 1940s through 60s, and that roughness is what makes soot and brake-lining particulate stick to the walls instead of being carried to the filter. Annual cleaning becomes a corrosion-control measure here, not just a dust-removal chore.
Because in South San Francisco, the return side is where the contamination concentrates. The black exhaust particulate that comes in through return grilles is fine enough to bypass filters, and it deposits in the return plenum and onto the coil face before the air ever reaches the blower. If we cleaned supply ducts only, your system would still smell and still underperform. We scope and clean the return path as its own step, then move to the supply side. The price we quote includes both, and we’ll show you photos of each side before and after.
Yes. The short, low-clearance duct runs in the older sections of South San Francisco mean access is tight, but it’s work we do regularly. We pull the blower assembly, clean the wheel, and wash the evaporator coil in place where the cabinet allows, then seal the gaskets before closing it back up. The physical clearance doesn’t change the fact that the coil and blower still need cleaning. It just means the job takes a little longer, and we plan for that when we schedule.
It depends on what we find when we scope the system. On older G40 and G60 cabinets, separated gaskets and leaky return plenums are common in South San Francisco’s damp air, and cleaning alone won’t fix a leak. If your return ducts are pulling unconditioned air from an attic or crawl space, sealing is part of the fix, not an upsell. We’ll tell you what we saw, show you the photos, and let you decide. If cleaning is all the system needs, that’s what we’ll recommend. For a free assessment, call (833) 620-5944.
Service Areas Near South San Francisco
We run Lennox cleaning routes from South San Francisco out to Daly City, San Mateo, and up the Peninsula. We also cover Lennox service in Chinatown, Lennox service in SoMa, and the East Bay communities of Alameda, Berkeley, and Richmond. If your home sits in the 94080 or 94083 zip codes, you’re in our core South San Francisco service area. See our South San Francisco service area page for the full map. If you need Lennox equipment work outside cleaning, our Lennox sales & service page covers what we do and don’t handle.
Book Your Lennox Service in South San Francisco Today
If your Lennox system smells like diesel, isn’t moving air the way it used to, or hasn’t been cleaned in years, we’ll open it up and show you what’s inside. Call (833) 620-5944 for a free estimate and we’ll schedule a scope visit at your South San Francisco home. Clean air isn’t a feeling. It’s something you can see.
Written by Bruce Lowry, Owner at Everclear Air Duct Cleaning, serving South San Francisco and the Bay Area since 2017.