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 Redwood City, CA
We provide independent Lennox air duct cleaning across Redwood City, from the 1950s ranchers in 94061 to the Redwood Shores condos in 94065. The short version: we know Lennox systems, we know Redwood City crawlspaces, and we own the equipment to actually show you what’s inside your ducts before and after. Call (866) 593-7291 for a free estimate. We’re not Lennox-authorized, and we’re clear about that up front.
Why Redwood City Residents Choose Us for Lennox Service
Redwood City homeowners call us because we’ve spent years pulling apart Lennox duct systems in exactly the housing stock this city has: Eichler-era ranchers with galvanized trunk lines, 1980s flex-duct condos in Redwood Shores, and everything in between. Noel Brandt, our owner, learned his trade at Foothill College in Los Altos Hills and has spent nearly two decades working inside residential and light-commercial duct systems. We run Lennox sales & service knowledge into every job because a Lennox ECM blower behaves differently than a PSC motor, and you can’t clean properly without understanding that.
We’re a duct cleaning specialist, not a general contractor who squeezes your vents in between bathroom remodels. Our techs use Rotobrush rotary brush systems and Nikro HEPA vacuum units on every job. If we find a crack, a rusted seam, or a collapsed section, we repair ductwork on the spot rather than handing you a report and leaving. That clean-through-repair approach is the reason homeowners across the Redwood City service area keep our number.
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 Redwood City
Lennox equipment has specific failure patterns, and Redwood City’s fog-belt climate makes some of them show up far more often here than they would in, say, Fremont or Sunnyvale. These are the five we see most:
- Mold on cased-coil pans in fog-damp crawlspaces. The Lennox XC/CBX pairings installed in Redwood City homes sit in crawlspaces that stay wet weeks after the morning fog burns off. Untreated condensate pans grow mold that gets pulled directly into the supply trunk. We inspect the coil pan on every crawlspace job.
- ECM blowers ramping to high static from restricted returns. Lennox XC and SL-series air handlers respond to a clogged return by spinning the blower faster to maintain airflow. In Redwood City neighborhoods with mature redwood and oak canopy, return grilles clog with fine needle litter and pollen, the blower runs hot, and the system short-cycles. Return duct cleaning is often the actual fix.
- Rusted galvanized trunk and takeoff joints in 1950s-60s ranchers. The post-war tract homes across 94061 and 94063 still have their original sheet-metal ducts. Decades of winter rain and fog-morning condensation rust the seams open, and those leaks pull crawlspace dust and rodent debris into the airstream. We seal them with mastic after cleaning.
- Merit-series heat exchanger stress from years of restricted airflow. Older Lennox Merit furnaces in Redwood City retrofits show stress cracks when they’ve run for years against a restricted return. We scope heat exchanger cleaning alongside return duct cleaning, because one usually caused the other.
- Rodent nests packed into open return plenums. In the pre-1970 homes off the El Camino corridor, return plenums often pull air straight from the crawlspace. Rats and mice nest in there. We’ve pulled decades of nesting material out of return ducts in 94061 repeatedly, block after block.
Lennox Service in Redwood City: What Local Conditions Mean for Your Equipment
Here’s the thing about Redwood City that most duct cleaning companies miss: it sits in a fog belt. The marine layer rolls over the Santa Cruz Mountains and hangs over the Peninsula, and in the older neighborhoods near the El Camino, crawlspaces stay damp for weeks at a time, even in summer. A duct system in Palo Alto or Menlo Park might show dry dust loading. In a 1958 rancher in 94061, we’re more likely to find corrosion bloom at the galvanized seams, mold on the Lennox cased-coil pan, and rust flakes inside the supply trunk. Mild, dry summers with persistent onshore fog and wind push fine dust and pollen through leaky old duct joints rather than the heavy AC-condensation problems you’d see in hotter inland cities like Concord or Livermore. That’s why we scope crawlspace return cleaning and coil inspection on the same visit for older Redwood City homes. We’ve pulled return plenums packed with decades of redwood needle litter and rodent nesting, plus a corroded takeoff joint feeding a Lennox CBX-style cased coil that had mold growing on the wet pan. The short cycling stopped after we cleaned the returns, sealed the rusted joints, and treated the coil. That’s the local pattern, and it’s predictable once you’ve seen it a few dozen times.
Lennox Models & Products We Service in Redwood City
We service the Lennox lines most common in Redwood City housing. That includes Lennox Elite series gas furnaces (the EL280 and EL296 families), Signature Collection SL-series variable-speed furnaces and air handlers, XC-series air conditioners paired with CBX/CBXM cased coils, and the Dave Lennox Signature and Merit-series packaged and split systems installed in older retrofits. On parts, we use Lennox OEM filters, pans, and coil-compatible components where fitment matters, and quality aftermarket flex, mastic, and gasketing for duct repairs. We want the system to run like the factory intended, with seams that don’t leak. When a Lennox heat exchanger or blower motor has failed, we say so and quote replacement. We don’t patch a cracked exchanger.
See the difference
Before
After
Before
After
Before
AfterLennox Service Pricing in Redwood City
Duct cleaning prices in Redwood City depend on the size of the home, the number of returns, and what we find once we open the plenum. A typical single-family house with one furnace runs between $450 and $850 for full system cleaning. Adding a crawlspace return cleaning or cased-coil inspection runs more, and we quote that before we start. If we find a rusted joint or sagging flex section during the cleaning, we’ll quote the repair separately, same visit, with your approval before we touch it. Every estimate includes camera inspection before and after, because “if we can’t show you what we found, we haven’t done the job right.” Call (866) 593-7291 for an exact quote. The estimate is free, and we won’t bait you with a low number over the phone and then inflate it in your driveway.
Serving Redwood City, CA – Our Local Coverage Area
We’re based in the Redwood City 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 Redwood City
Usually both, and the duct problem causes the furnace problem. In the 1950s ranchers around 94061 and 94063, the original return ducts pull from crawlspaces that fill with redwood needle litter, dust, and sometimes rodent nests. That restricts airflow, and a Lennox ECM blower responds by ramping up to high static to compensate. The motor runs hot, the system short-cycles, and over time the heat exchanger takes the stress. We clean the return first, inspect the coil and blower, and only then can we tell you whether the furnace itself needs work. Call (866) 593-7291 and we’ll scope it.
Yes. Redwood Shores condos and townhomes in 94065 are mostly 1980s-2000s construction with flex duct in tight mechanical chases. The duct runs are shorter and easier to access, but the Lennox variable-speed air handlers are sensitive to static pressure and restricted returns. Cleaning a flex-duct system in a Redwood Shores condo means being careful not to pull or snag the inner liner, and we use different attachment speeds than we would on a galvanized trunk in an old rancher. The equipment stays the same. The technique doesn’t.
We treat the coil with an EPA-registered antimicrobial cleaner, replace the coil pan if it’s rusted through, and most importantly, figure out why the pan is wet in the first place. In Redwood City, that’s usually a fog-belt crawlspace with poor drainage or no vapor barrier. We’ll clean the supply trunk downstream of the coil so the mold spores don’t keep recirculating, then seal any duct leaks nearby. If we can’t show you what we found, we haven’t done the job right. Call (866) 593-7291 for a crawlspace inspection.
No. Duct cleaning doesn’t touch the furnace cabinet, the blower housing, or any sealed components, and it won’t affect your warranty. We’re an independent company, not affiliated with or authorized by Lennox, and we don’t modify or alter any Lennox-manufactured part. We clean the ductwork attached to the system, and if we find a furnace problem, we tell you and recommend a Lennox-qualified HVAC technician. Our job is clean ducts and honest diagnosis.
Expect a lot of material, honestly. These systems have been drawing air through the same returns for 50 or 60 years, and in the 94063 tract homes near the El Camino, that means decades of dust, construction debris, rodent nesting, and rust scale inside the return trunk. The first cleaning takes longer than a system that’s been maintained, usually half a day. Expect us to find leaks at the old galvanized seams, and expect a quote to seal them. For a price range, a full system cleaning on an older Redwood City rancher runs $450-$850, with repairs quoted separately after we show you the camera footage. Call (866) 593-7291 and we’ll walk you through it.
Service Areas Near Redwood City
We serve Redwood City and the surrounding Peninsula. You’ll find us in Campbell, plus North San Jose, and across Mountain View, Palo Alto, and Cupertino. If you’re on the Peninsula and your Lennox system needs a real duct cleaning, we’re a short drive away.
Book Your Lennox Service in Redwood City Today
If your Lennox system is short-cycling, blowing dust, or smelling musty in the mornings, call (866) 593-7291 for a free estimate. We’ll schedule a time that works, bring the Rotobrush and Nikro equipment, and show you what we find.
Written by Noel Brandt, Owner at Duct Cleaning Sunnyvale, serving Redwood City and the greater Bay Area since 2005.