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 San Bruno, CA
We’re an independent Lennox air duct cleaning company serving San Bruno, CA. What makes our work different here comes down to one thing we see every week: the same Lennox furnace on the flats near SFO needs a different cleaning protocol than one in the hills above the fog line. If you own a Lennox system in the 94066 zip and your registers show black dust or your vents carry a musty smell, call (833) 620-5944 and we’ll tell you exactly what we’d do and what it costs.
Why San Bruno Residents Choose Us for Lennox Service
We work on Lennox in South San Francisco and San Bruno every week. Older Merit and Elite furnaces in post-war ranches, newer variable-speed air handlers in townhomes near Caltrain, and everything between. Being independent means we’re not tied to a manufacturer playbook. We diagnose what’s actually in your ducts and inside your cabinet, backed by Rotobrush rotary brush systems and Nikro HEPA-rated vacuums that capture what we pull out instead of pushing it through the living room.
Bruce Lowry leads our crew. He grew up in Alameda, learned HVAC fundamentals at Laney College, and spent nearly two decades crawling Bay Area ductwork before he started showing customers before-and-after photos of every job. He runs the service with the same no-nonsense approach: you either cleaned the system or you didn’t, and the photos tell the truth.
We stock OEM Lennox filters, gaskets, and cabinet components where fit matters. On the duct side, we carry quality aftermarket flex duct, mastic, and insulation for repairs that hold up in San Bruno’s salt air and damp. One call covers cleaning, sealing, and coil work on the same visit.
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 San Bruno
- Bottom-return filter bypass on Merit and Elite furnaces. San Bruno’s damp fog-belt dust and the fine soot-like particulate that drifts up from SFO pull past a loosely seated filter and coat the blower wheel and evaporator coil. We pull the filter, show you what’s underneath, then clean the wheel and coil with HEPA equipment.
- Rusted seams and loose takeoffs on original galvanized ductwork. Post-war (1940s-1960s) San Bruno ranches often still have their original trunk-and-branch ducts. Coastal salt air accelerates corrosion, and the seams work loose over decades. Heated air bleeds into crawlspaces. We seal those joints with mastic and show you the repaired sections.
- Sagging flex duct in transit-corridor townhomes. Newer Lennox variable-speed air handlers in infill developments near the Caltrain corridor are usually fed by flexible plastic-core duct. It sags at low points, traps debris, and drives up static pressure. The ECM blower compensates silently until airflow drops enough to notice. We identify the low points and correct them.
- Mildew-matted evaporator coils in fog-belt homes. San Bruno’s cool summers mean heating cycles run much of the year, keeping cabinet interiors dark and slightly moist. That’s ideal mildew territory. We see Lennox coils with damp dust matting that inland homes just don’t get. Coil cleaning is part of our full-system scope.
- Black residue on supply registers near SFO. Homes on the flats regularly show fine black soot-like accumulation from aircraft and traffic particulate. It’s not mold, and it’s not normal dust. It needs a specific cleaning approach that removes particulate from the entire supply run, not just the visible grille.
Lennox Service in San Bruno: What Local Conditions Mean for Your Equipment
Here’s a San Bruno-specific fact most duct cleaners in the Bay Area never explain: within the same 94066 zip code, two Lennox systems get two totally different cleaning protocols. Homes on the flats near SFO pick up fine black soot-like residue that rides in through the return and settles in every low point of the duct system. Homes up in the hills, sitting in fog that rolls off the Santa Cruz Mountains, show more mold and mildew from fog-driven humidity that keeps duct interiors damp. Same Lennox cabinet, different contamination profile. We inspect for both and adjust our process accordingly.
On a ranch home off the flats near SFO, our tech pulled the bottom-return filter on a Lennox Merit Series furnace and found the blower wheel caked in fine black particulate that had been riding in with the return air. We HEPA-cleaned the supply and return runs, sealed rusted takeoffs on the original galvanized trunk with mastic, and scrubbed the evaporator coil. The homeowner noticed the furnace cycled less and the musty smell was gone. That’s the kind of result we document with photos.
Lennox Models & Products We Service in San Bruno
We clean and repair duct systems on the full Lennox residential range: Merit Series (ML and Dave Lennox Legacy lines), Elite Series furnaces and air handlers, Signature Collection furnaces, and CBA and CBX variable-speed air handlers. On Lennox equipment we lean toward repair and sealing when the heat exchanger and blower are sound. We’ll tell you honestly when a 1990s cabinet has reached the point where replacement makes more sense than putting another coil cleaning and duct fix into it.
For duct repairs we use OEM Lennox filters, gaskets, and cabinet components where fit matters. Flex duct, mastic, and insulation are quality aftermarket product chosen for San Bruno’s damp, salty environment. We keep the common parts stocked locally so most repairs happen same visit.
See the difference
Before
After
Before
After
Before
AfterLennox Service Pricing in San Bruno
Air duct cleaning for a typical San Bruno single-story ranch runs $450 to $900 depending on system size, access, and contamination level. Adding evaporator coil cleaning typically runs $150 to $350 more. Duct sealing on older galvanized systems runs $300 to $700 depending on how many joints and takeoffs need work. Townhomes near the Caltrain corridor usually land on the lower end of the range because the systems are newer and shorter, similar to what we see with Lennox repair in Burlingame.
What drives cost in a 1940s-1960s ranch is access and rust. Crawlspace work, collapsed sections, and heavily corroded takeoffs add time. Our estimate is free and it’s a real number based on what we see, not a teaser rate that changes once the van is in your driveway. Call (833) 620-5944 for pricing on your specific Lennox system.
Serving San Bruno, CA – Our Local Coverage Area
We’re based in the San Bruno area and know this community well, plus Lennox in San Mateo just up the Peninsula. 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 Bruno
Yes, in most San Bruno ranches that smell is coming from the ducts or the evaporator coil, not the filter. The fog-belt humidity keeps cabinet interiors damp, and mildew grows on the coil surface and inside duct runs. Changing the filter doesn’t touch it. We clean the coil and the runs, then you verify the difference with before-and-after photos. Call (833) 620-5944 and we’ll tell you what we’d expect to find in your system.
Yes. Townhome systems near the Caltrain corridor typically use flexible plastic-core duct that sags and traps debris at low points. The cleaning approach focuses on clearing those sag points and verifying airflow at each register. Older ranches with galvanized trunk-and-branch duct need seam and takeoff inspection, rust assessment, and sealing as part of the cleaning. Different houses, different process.
Yes. That black residue on flats near SFO is particulate from aircraft and traffic that enters through the return and coats the blower, coil, and duct interiors. A proper HEPA cleaning of supply and return runs removes it. Just wiping the grille doesn’t address what’s inside. We show you the before-and-after on the actual duct surfaces we cleaned. Call (833) 620-5944 for an estimate on your system.
No, sealing ductwork with mastic doesn’t void any Lennox warranty. We’re independent and don’t claim otherwise. On original galvanized duct in a 1940s-1960s San Bruno home, sealing loose seams and takeoffs stops heated air from bleeding into crawlspaces. That’s money you already spent on gas leaving the system before it reaches a room. Worth doing, and we’ll show you the repaired joints.
Every 3 to 5 years for most San Bruno homes, depending on location. Houses on the SFO flats with black particulate accumulation may need it closer to every 3 years. Hillside homes with fog-driven mold may lean toward 4 to 5 years but should have the coil checked more frequently. We’ll give you a straight answer based on what we find the first time. Call (833) 620-5944 and we’ll help you figure out what your system needs.
Service Areas Near San Bruno
Beyond our work in San Bruno, we cover the wider Bay Area for Lennox duct cleaning and repair. Homes in Daly City share the same fog-belt conditions. Lennox service in Embarcadero, San Mateo, and Berkeley systems face similar coastal humidity.
Across the bay, Lennox service in Alameda covers the neighborhoods where Bruce grew up, and our San Bruno service area details exactly where we work. For full Lennox equipment scope, see our Lennox sales & service page.
Book Your Lennox Service in San Bruno Today
If your Lennox system is pushing air through ducts that haven’t been inspected in years, you’ll see the difference in a photo. Call (833) 620-5944 for a free estimate. Clean air isn’t a feeling. It’s something you can see.
Written by Bruce Lowry, Owner at Everclear Air Duct Cleaning, serving San Bruno since 2017.