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.
Lennox Air Duct Cleaning in Los Altos, CA
We provide independent Lennox air duct cleaning across Los Altos, including the 94022, 94024, 94040, and 94023 ZIP codes. What sets our Lennox work apart here is simple: we know what’s hiding in the attic duct runs of remodeled mid-century ranches, because we’ve spent years pulling crushed flex, disconnected splices, and decades of dust out of them. If you own a Lennox system in Los Altos, call (833) 620-7085 and we’ll map the full duct layout before a single hose goes in.
Why Los Altos Residents Choose Us for Lennox Service
We are not authorized by Lennox, and we’re direct about that. What we are is independent specialists who have worked on hundreds of Lennox systems throughout Los Altos, from older G-series furnaces to modern variable-speed heat pumps. Neal Drummond, our owner, completed his technical training through Foothill College’s HVAC and building systems program after growing up with Lennox repair in Los Altos Hills, before logging well over a decade of hands-on duct cleaning work in residential and light-commercial buildings across the Peninsula. That local training matters because Los Altos homes present a specific set of duct problems that don’t show up in newer tract housing.
Our crews run Rotobrush brush-contact cleaning systems and Nikro HEPA negative-air machines, the same equipment class used in commercial restoration and abatement. When we work on a Lennox system in Los Altos, we’re not just vacuuming what’s reachable. We’re checking static pressure, mapping duct runs, and documenting what we find with before-and-after photos. Homeowners here expect that level of documentation, and we provide it on every job.
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 Los Altos
Here’s what we actually find when we open up Lennox systems in this city. None of this is theoretical.
- Crushed flex splices buried under blown-in insulation. In the original ranch tracts off the 94022 and 94024 side, Lennox systems often share attic space with blown-in insulation that buries original duct runs. We routinely find disconnected or crushed flex splices hiding under that insulation. A simple vacuuming never addresses this; we do.
- Evaporator coil fouling in Lennox cased coils. Los Altos has dry, dusty summers and a long September-through-October dry season. Fine dust and wildfire smoke ash get drawn through undersized returns in older homes and pack onto the coil. That fouling is model-specific; a Lennox XC13 coil clogs differently than an XC15, and cleaning approach changes accordingly.
- Blower motor overload in variable-speed Lennox air handlers. When return duct static pressure rises from crushed or buried runs, the blower wheel works harder. On an EL296V or other variable-speed unit, that imbalance can overload the motor over time. Duct cleaning in Los Altos isn’t just about the ducts; it’s about protecting the blower behind them.
- Cabinet air leaks at seams and access panels. Lennox furnaces installed in low-clearance Los Altos attics develop seam leaks from years of thermal expansion. Attic dust and insulation fibers enter the supply stream through those leaks, even after the ducts themselves are clean. We seal them with mastic.
- Disconnected rigid-to-flex transitions from piecemeal remodels. Los Altos is dominated by large, heavily renovated mid-century ranch homes where owners added square footage and new HVAC zones piecemeal. The result is mismatched, discontinuous duct runs. Video inspection is the only way to find these disconnects, and we include it on every Lennox job.
Lennox Service in Los Altos: What Local Conditions Mean for Your Equipment
Here’s something we see in Los Altos that wouldn’t be equally true in a neighboring city. In the older ranch tracts off the 94022 and 94024 side, original attic duct runs are often buried under blown-in insulation and spliced with later add-on flex from remodel projects. That’s not a generic Bay Area problem; it’s a direct result of how Los Altos was built and how it’s been renovated. The original rigid sheet-metal trunks from the 1950s and 1960s are still up there, but decades of additions mean new flex branches were spliced in, often by different contractors at different times, with no documentation of where anything runs.
For a Lennox owner, this means a cleaning call can quickly reveal a crushed flex run killing airflow to the back bedrooms, or a disconnected splice pulling attic air into the supply stream. The duct doesn’t lie. Whatever has been moving through your air system for the past decade is still in there until someone actually removes it. On a recent job near Stanford, our crew was called to clean ducts in a 1960s ranch with a Lennox G61MPV furnace in the Highlands neighborhood off Springer Road. Video inspection revealed a crushed flex run buried under blown-in insulation, causing high static pressure and uneven airflow to the back bedrooms. We replaced the damaged section, sealed the attic leaks with mastic, and restored balanced airflow, documented with before-and-after photos and static pressure readings.
Lennox Models & Products We Service in Los Altos
We service the full range of Lennox equipment you’re likely to find in Los Altos homes. That includes the G61MPV mid-efficiency gas furnace, a workhorse in 1990s and early 2000s retrofits across the city. We also work on XC13 and XC15 air conditioners, the EL296V high-efficiency variable-speed furnace, and the entry-level Merit Series furnaces and ACs common in smaller homes and rental properties. For critical components like control boards and blower motors, we use OEM Lennox parts to preserve system compatibility. For duct repairs, we use quality aftermarket flex and rigid ducting that meets or exceeds original specs. We keep common Lennox-compatible materials stocked locally for faster Los Altos turnaround. Our full-service scope also includes Lennox sales & service support across the broader Peninsula.
See the difference
Before
After
Before
After
Before
AfterLennox Service Pricing in Los Altos
Air duct cleaning for a Lennox system in Los Altos typically runs from $450 to $850 depending on the number of zones, accessibility of the attic, and how much repair work the inspection reveals. Homes with buried duct runs or disconnected splices will land higher, because we’re fixing the system, not just vacuuming it. Homes with straightforward accessible ducts land lower. A video inspection is included with every quote so you can see exactly what we found before any work is approved. When a Lennox unit is over 15 years old and facing major coil or heat exchanger issues, we’ll give you an honest assessment of repair versus replacement, weighing efficiency gains and local utility incentives, including options for Lennox service in Palo Alto. Call (833) 620-7085 for a free estimate and we’ll walk you through what your specific system needs.
Serving Los Altos, CA – Our Local Coverage Area
We’re based in the Los Altos 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 Los Altos
Short-cycling after a duct cleaning usually means the cleaning exposed a problem that was already there, most often a crushed or disconnected flex run that’s now restricting airflow more visibly because the rest of the system is clean. In Los Altos homes where duct runs are buried under blown-in insulation, this happens regularly. We find the restriction with video inspection, repair it, and re-test static pressure. Call (833) 620-7085 and we’ll diagnose it properly.
Yes, but Eichler-influenced homes in Los Altos require a different approach. The rigid sheet-metal or early flex duct in cramped, low-clearance attics often can’t be reached with standard equipment. We use smaller-access Rotobrush contact-cleaning heads and HEPA negative-air containment that fits tighter spaces. The documentation standard matters here too; Eichler owners typically want to see exactly what was in the ducts and what we removed.
The signs are consistent: uneven airflow between rooms, higher energy bills without a change in usage, a blower that runs louder than it used to, or rooms that never quite reach the thermostat setpoint. In Los Altos ranch homes with blown-in insulation, crushed ducts are common enough that we recommend a video inspection any time you notice these symptoms.
Yes, and we’ve done a lot of this work after smoke events in the nearby Santa Cruz Mountains and East Palo Alto. Wildfire smoke particles are fine enough to work their way into duct seams and cabinet leaks, and they’ll keep recirculating long after the outdoor air clears. We clean the interior surfaces with HEPA filtration running, then seal the seams with mastic to keep future smoke intrusion out. Call (833) 620-7085 to schedule an inspection.
Expect a longer, more thorough job than a typical suburban home. The original rigid duct runs in 1950s Los Altos ranches are often buried under blown-in insulation, patched with decades of add-on flex, and routed through attics with very low clearance. We’ll map the system, run video inspection, clean with Rotobrush contact-cleaning, contain with Nikro HEPA negative-air, seal what’s leaking, and give you before-and-after photos plus static pressure readings. The job usually takes four to six hours for a single-story ranch.
Service Areas Near Los Altos
We provide Lennox air duct cleaning throughout Los Altos service area and the surrounding Peninsula communities. Our crews also serve Palo Alto, Menlo Park, San Mateo, Woodside, and San Carlos. If you’re unsure whether we cover your street, call and ask.
Book Your Lennox Service in Los Altos Today
Call (833) 620-7085 to schedule a Lennox air duct cleaning in Los Altos. We’ll send a crew that maps the system, documents what’s actually inside the ducts, and fixes what’s broken before we leave. Free estimates, video inspection included.
Written by Neal Drummond, Owner at Air Duct Cleaning Palo Alto, serving Los Altos and the Peninsula.