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 Leandro, CA
We provide independent Lennox air duct cleaning across San Leandro, and we’ve done it since 2011. What makes our Lennox work different here is simple: in the older tracts near downtown and the BART corridor, attics are often only 18 to 24 inches high, so many Lennox duct systems have crushed or disconnected runs that were never accessible for cleaning. Homeowners are frequently surprised that their “cleaned” ducts were never actually touched. Call (833) 589-9902. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.

Why San Leandro Residents Choose Us for Lennox Service
Duct cleaning is all we do. We’re not an HVAC generalist that treats it as a side job. That focus matters when you own a Lennox system in a 1950s rancher in San Leandro, because the ductwork itself is often the weak point, not the equipment. Darren Radcliffe grew up near the South Hayward BART corridor and has spent most of his life in the East Bay. He studied HVAC systems through the mechanical technology program at Chabot College in Livermore, then spent years in the trade before starting Duct Cleaning Hayward in 2011. His daughter has asthma, which is part of why he takes indoor air quality seriously and has never treated duct cleaning as a quick-turnaround job.
We run Rotobrush and Nikro systems, the same professional-grade negative-pressure equipment commercial contractors use. Not a shop-vac setup. We also work with Honeywell and Aprilaire air quality components, and we use Abatement Technologies filtration gear for heavier jobs. When you call, you get a straight answer about what we found and what it will take to fix it.
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 Leandro
- Crushed or disconnected flex-duct branches added during remodels. San Leandro’s postwar ranchers have been remodeled often, and added flex-duct branches are prone to kinks and disconnections. A Lennox system pushing air through a crushed 6-inch flex run works harder and delivers less. We inspect, reroute, and seal these. We repair what others just clean around.
- Deteriorating taped joints on original galvanized ducts. Homes in 94577 and 94578 built in the 1940s through 60s still have original rigid galvanized ductwork. The tape degrades, joints loosen, and air leaks into low-pitch attics. We remove failed tape, lock the joints, and seal with mastic rated for the job.
- Mold growth in poorly insulated attic ducts. San Leandro sits in a mild, marine-influenced climate with cool, damp winters. Attic ducts that aren’t insulated properly sweat, and that moisture feeds mold. It’s a recurring problem in older Lennox installations here, and it affects the air you breathe before it affects your system’s efficiency.
- Return duct leakage pulling in dust and pollen from nearby hills. Summer dust and pollen from the hills get pulled into return systems, especially where return ducts run through attics or crawlspaces with old connections. That loading clogs Lennox evaporator coils and blower wheels faster than most homeowners expect.
- Closed-off rooms and unbalanced airflow. Single-story ranchers with slab or raised foundations often have long, straight supply runs. When homeowners close off rooms or add a return, the static pressure on a Lennox system changes. We map airflow with the system running and correct what the original installer or a later remodel got wrong.
Lennox Service in San Leandro: What Local Conditions Mean for Your Equipment
San Leandro’s single-story postwar ranchers and early tract homes from the 1940s through the 70s were built with original sheet-metal ductwork that now often has loose joints and crushed runs. Because so many of them are owner-occupied for decades, duct cleaning here is less about routine maintenance and more about correcting original installation flaws and decades of DIY patch-ups. In the older tracts near downtown and the BART corridor, attics are often only 18 to 24 inches high. That means the original installer cut corners, and later “cleaning” crews couldn’t physically reach long stretches of duct. We recently serviced a 1950s rancher near downtown San Leandro with a Lennox Merit Series system where the homeowner complained of uneven cooling. Our video inspection revealed a crushed flex-duct branch in the 20-inch attic, likely from a DIY remodel, so we rerouted and sealed the duct with mastic, restoring proper airflow to the back bedrooms. Your ducts work invisibly, until they don’t. Cleaner air starts inside the walls.
Lennox Models & Products We Service in San Leandro
We service Lennox air handlers, evaporator coils, blower wheels, and the full duct system attached to them, across the Merit Series, Elite Series, Signature Series, and Dave Lennox Signature Collection. We don’t need to know the model number to know how the duct transition should be built. Our techs are trained to handle Lennox-specific ductboard and flex-duct transitions without disrupting the system’s efficiency. When a part needs replacing, we use quality parts that fit the system, sized to the ductwork we’re actually working on, not a one-size-fits-all guess. We’re an independent Lennox service provider, not manufacturer-affiliated or authorized. That means our only loyalty is to the house in front of us.
See the difference
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After
Before
After
Before
AfterLennox Service Pricing in San Leandro
Every San Leandro home is different, so pricing is set per job by a written estimate. A basic whole-house air duct cleaning for a typical single-story rancher generally runs from $350 to $600, depending on the number of systems and the condition of the ductwork. If we find crushed flex, leaking joints, or return-side damage during inspection, repair work is quoted separately before we touch it. The estimate is free. If I can’t show you what I found, I won’t charge you for fixing it. We don’t do per-vent teaser pricing. You get one flat price per system agreed to before work starts, and before-and-after photos of your own ducts. Call (833) 589-9902 for an exact quote.
Serving San Leandro, CA – Our Local Coverage Area
We serve San Leandro 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 San Leandro
Yes, if the runs are accessible. In many San Leandro homes, especially older tracts near downtown and the BART corridor, attics are only 18 to 24 inches high. We use low-profile tools and video inspection to see what’s actually reachable. If a run is crushed or disconnected, we tell you before we start, because cleaning a duct that isn’t connected does nothing. Call (833) 589-9902 and we’ll assess what’s actually serviceable.
Cool, damp winters mean attic ducts that aren’t properly insulated can sweat, and that moisture supports mold growth on the inside of the duct and around joints. Dry summers add dust and pollen from the hills into return systems. Together, they load up evaporator coils and blower wheels faster than in drier inland climates. Regular inspection catches both problems before they compound.
Depends on the condition of the metal and the joints. Galvanized duct from the 1940s to 60s in San Leandro homes is often still solid, but the taped joints fail. If the runs are straight, accessible, and not rusted through, we reseal the joints with mastic and repair what’s loose. If a run is crushed or the metal is compromised, replacement of that section is more honest. We’ll show you the video before we recommend anything.
Yes. Crushed or kinked flex branches are one of the most common things we find in remodeled San Leandro ranchers. We reroute the flex where possible, cut out the damaged section, and seal the connections with mastic. If the original installer ran it too tight through a low attic, we re-route it with proper support so it doesn’t happen again.
We don’t repair or replace air handlers or coils as a separate service. But as part of the duct cleaning, we inspect the blower wheel, coil, and filter housing. If we see dust loading or mold on the coil, we’ll tell you and recommend a qualified HVAC technician. Our focus is the duct system, and we don’t pretend to be something we’re not. Call (833) 589-9902 for a free estimate.
Service Areas Near San Leandro
We work throughout the East Bay, including Castro Valley, Hayward, Oakland, Fremont, Pleasanton, and San Ramon.
Book Your Lennox Service in San Leandro Today
Call (833) 589-9902 for a free estimate. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. We’ll inspect your ducts, show you what we found, and quote one flat price before any work starts.
Written by Darren Radcliffe, Owner at Duct Cleaning Hayward, serving San Leandro since 2011.