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 Pablo, CA
We provide our Air Duct Cleaning in San Pablo for independent Lennox systems, and the work here has a signature we recognize immediately: fine grey soot from the I-80 corridor and Chevron Richmond Refinery settling through original duct runs in homes built between the 1940s and 1970s. That combination means a Lennox system in San Pablo needs more than a standard vacuum-out. It needs someone who understands both the equipment and what this city’s air deposits into it. Call us at (833) 467-6681 for a free estimate.
Why San Pablo Residents Choose Us for Lennox Service
Nelson Briggs, our owner, grew up in Oakland’s Fruitvale neighborhood and learned HVAC fundamentals through the building trades program at Laney College. What started as general HVAC work turned into a duct-cleaning specialty once his own daughter’s asthma made indoor air personal. That’s why we treat every Lennox system in San Pablo as its own diagnostic case, not a repeat of the last job.
We work on Lennox Merit, Elite, and Dave Lennox Signature Collection systems, but we’re not a manufacturer service channel. Hallmark Air Duct Cleaning is an independent East Bay contractor, and we make repair-versus-replace calls based on what the equipment actually needs. That means when a Lennox cabinet or coil is still sound, we clean, seal, and repair rather than push replacement. You can learn more about our Lennox sales & service approach.
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 Pablo
- Grey soot coating supply trunks. Lennox furnaces in low-pitch San Pablo attics often sit on undersized original plenums. The return-side static pressure pulls fine refinery and diesel particulate past marginal filter racks and deposits it along the supply trunk. We see this on Merit and Elite furnaces regularly, especially west of San Pablo Avenue.
- Mold and musty odors from crawlspace returns. Early flexible return duct tied to Lennox air handlers in crawlspace runs collects damp winter condensation. That moisture supports mold growth and drives musty soil odors up through the return. It’s common in the west-side tract homes where returns run under the floor rather than through attic chases.
- Evaporator coils loaded with dry-season dust. San Pablo’s long dry summer deposits pollen and dust across the whole system. When that load mats onto an older Lennox evaporator coil, airflow drops, the blower works harder, and duct joints leak conditioned air into the attic. Coil cleaning restores static pressure and quiets the system.
- Separated mastic and taped plenum seams. Mastic and tape harden with age and pull apart at the seams. That lets unfiltered attic air enter the airstream before it ever reaches the Lennox cabinet. We re-seal those seams with fresh mastic so the system breathes only what it should.
- Sagging flex duct on converted-garage additions. San Pablo has plenty of added-on rooms and converted garages with ad-hoc duct runs. Flex that wasn’t supported properly sags, kinks, and collects debris at the low points. Re-supporting and cleaning those runs makes the whole Lennox system work the way the original install intended.
Lennox Service in San Pablo: What Local Conditions Mean for Your Equipment
Much of San Pablo’s west-side tract housing has crawlspace return runs that draw musty soil air into the system, and those same runs carry the fine grey refinery and diesel soot that coats duct interiors near the I-80 corridor and Chevron Richmond Refinery. That combination of damp crawlspace returns plus settled soot is the diagnostic signature we look for on Lennox systems here. It’s why we start every San Pablo job with a video inspection of the return side, not just the supply registers. We want to see what’s actually in the runs before touching anything. This isn’t a generic problem you’ll find in neighboring cities. In Richmond’s flatlands you get the refinery soot but often newer ductwork. In the Oakland hills the same model Lennox furnace sits in a different attic profile with different condensation behavior. San Pablo combines mid-century housing stock, low-pitch attics, and the I-80 particulate stream into a specific set of conditions. Our San Pablo service area work is built around that reality.
On a 1950s stucco bungalow off San Pablo Avenue near the I-80 corridor, our tech pulled a video inspection on a Lennox Merit Series furnace – similar to units we see during Berkeley Lennox service calls – and found the return trunk and crawlspace flex run coated in fine grey soot the homeowner had assumed was ordinary dust. We cleaned the full return and supply system, then mastic-sealed the separated plenum seams and re-supported the sagging flex so the Lennox air handler stopped pulling attic and soil air into the airstream. The musty odor cleared and the homeowner could finally tell clean ductwork from soot.
Lennox Models & Products We Service in San Pablo
We service the full residential Lennox range: Merit Series gas furnaces (ML and EL lines), Elite Series furnaces and air handlers, and Dave Lennox Signature Collection SL and XC systems. We also work with Lennox Healthy Climate whole-home filtration and duct accessories. For parts, we fit Lennox-compatible OEM and quality aftermarket components (filter racks, flex duct, mastic, plenum fittings) based on fit and longevity, not brand markup. We keep common plenum fittings, mastic, and flex duct on the truck so most San Pablo repairs move forward the same day without a second trip.
See the difference
Before
After
Before
After
Before
AfterLennox Service Pricing in San Pablo
Air duct cleaning in San Pablo typically runs between $400 and $800 for a full system, depending on the size of the home, number of returns, and how heavily the ducts are loaded with soot and debris. Evaporator coil cleaning adds roughly $150 to $300. Duct sealing and flex repair work gets quoted after a video inspection because the scope depends on how many seams have actually separated. Here’s how those line items break down:
- Full air duct cleaning (supply and return): $400 – $800
- Evaporator coil cleaning: $150 – $300
- Duct sealing and mastic repair: quoted per job after inspection
- Flex duct re-support and repair: quoted per job
The big variable in San Pablo is crawlspace access and how much soot has accumulated over the years. A two-bedroom bungalow with a short, accessible crawlspace takes less time than a larger home with long flex runs through a damp foundation. Every estimate includes a walkthrough and video inspection so you know what you’re paying for before we start. Call (833) 467-6681 and we’ll give you a real number.
Serving San Pablo, CA – Our Local Coverage Area
We’re based in the San Pablo 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 Pablo
That grey, fine material is settled particulate from the I-80 corridor and the Chevron Richmond Refinery, and it’s drawn into your system through the return side and deposited along the supply trunk – a pattern we also address with Lennox repair in Richmond. The color is the tell: household dust is lighter and fluffier. When you see grey dust on Lennox registers here, the system is pulling unfiltered air from somewhere, usually a separated plenum seam or a leaky crawlspace return. We find it constantly in homes along the west side near San Pablo Avenue. Call (833) 467-6681 and we’ll trace where it’s entering and clean it at the source.
Almost always yes. The damp winter air in San Pablo settles into crawlspace return runs, especially on the west side where those returns pull directly over soil. That condensation breeds mold and pulls musty earth odor into the Lennox system, which then circulates it through the home. Cleaning the runs and sealing the flex connections stops the draw at the source. We diagnose this with a camera before recommending anything.
In most cases, yes. The galvanized trunks and branches in San Pablo’s 1950s and 1960s homes were built with heavy-gauge metal that holds up well. What fails is the mastic and tape at seams and the flex connectors, not the duct itself. We clean the metal internals, re-seal the seams, and replace only what’s actually degraded. If we find a section that’s too far gone, we’ll tell you honestly and quote a targeted replacement rather than a whole-system swap.
Yes, and it’s more common here than in drier East Bay cities like those where we provide Hercules Lennox service, because of the marine-influenced microclimate. Cool, damp winters combined with older duct insulation create condensation on the interior of crawlspace and attic runs. That moisture sits, mold spores settle in, and the musty smell moves through the Lennox system every cycle. Cleaning removes the mold and the condition that fed it, provided the runs get properly sealed afterward.
The long dry season in San Pablo puts heavy pollen and dust load into your system, and if the filter rack on your Lennox unit isn’t sealing well, that material bypasses the filter and collects directly on the coil. A loaded coil drops airflow, raises static pressure, and makes your blower work harder. Cleaning the coil and correcting the filter rack gap fixes the root cause and lets the system run at designed airflow. Estimates are free: (833) 467-6681.
Service Areas Near San Pablo
We also serve Lennox owners in Richmond, El Cerrito, Pinole, and Hercules, plus work down the East Bay into Oakland and Berkeley. If you’re in a neighboring city, we can likely reach you. For the East Bay side, see Lennox service in Albany or Lennox service in SoMa for coverage details.
Book Your Lennox Service in San Pablo Today
If your Lennox system has been circulating grey soot or musty crawlspace air through San Pablo rooms, we’ll put a camera on it and show you exactly what’s in there. Call (833) 467-6681 for a free estimate, or reach out through our site and we’ll get you scheduled.
Written by Nelson Briggs, Owner at Hallmark Air Duct Cleaning, serving San Pablo and the East Bay since day one.