Lennox Air Duct Cleaning in Greenwich, NY | Landmark Air Duct Cleaning Service New York
Lennox air duct cleaning in Greenwich, NY typically runs $350–$850 for residential systems, with backcountry estates running higher due to multiple air handlers and complex access. We provide independent Lennox service across all Greenwich ZIP codes — 06830, 06831, and 06836 — and we’re the crew that shows up with contractor-grade equipment and 20 years of duct-specific experience, not a generalist HVAC truck with a vacuum attachment. We also service Lennox in Rye Brook. Call (833) 754-6107 for a free estimate and same-day scheduling.
Why Greenwich Residents Choose Us for Lennox Service
Richard Anderson — owner and lead technician — handles your job personally. Two decades of duct work, not generalist HVAC services. That’s the difference between Lennox specialists who know blower curves and one that’s guessing.
We’ve cleaned Lennox systems in Greenwich’s coastal colonials along Shore Road and in backcountry estates north of the Merritt where a single home runs five separate air handlers — and we also offer our Air Duct Cleaning in Greenwich for homes of every size. We carry OEM Lennox parts for blowers, coils, and circuit boards, plus contractor-grade equipment from Rotobrush, Nikro, and Abatement Technologies — the same systems used on commercial jobs, brought to your basement or crawl space. 548 customers, 4.9 stars — results you can verify before you book.
Richard grew up in Woodside, Queens, a few blocks from the elevated 7 train, and learned the mechanical side of HVAC at New York City College of Technology in Brooklyn. He’s spent 20 years inside ducts in just about every building type New York throws at you. From cleaning to repair to sanitizing — one call closes the loop on your air quality.
Common Lennox Air Duct Cleaning Problems We Solve in Greenwich
- Signature Series blower motor stalling from limestone dust. The gravel driveways on backcountry estates kick up fine limestone particulate that packs onto variable-speed blower wheels. We’ve pulled wheels off Lennox Signature Series units in 06831 that were so caked the motor threw an “overcurrent” fault — the homeowner thought they needed a $900 motor replacement when they needed a deep cleaning and wheel balance.
- Merit Series coil pitting from tidal humidity. Greenwich’s southern edge along Long Island Sound pushes persistently elevated humidity through unsealed duct joints into crawl spaces. Lennox Merit Series evaporator coils in these conditions show accelerated pitting that standard cleaning won’t address — we inspect with borescope cameras and flag replacement before it becomes a refrigerant leak.
- SL280DFV pressure switch trips from secondary heat exchanger blockage. In estate homes with multiple Lennox air handlers, a debris-blocked secondary heat exchanger on one SL280DFV furnace can trip pressure switches while the other handlers mask the symptoms. We isolate each unit and clean exchanger tubes with compressed nitrogen and mechanical brushes, not shop vacs.
- iComfort filter alerts from bypass airflow in converted coal chases. Original coal-chase conversions in pre-war Greenwich homes create return-air pathways that bypass the filter entirely. The iComfort thermostat reads differential pressure and screams “check filter” — but the filter’s clean and the real problem is unfiltered air looping through a 1920s masonry chase. We map these pathways with smoke testing and seal them properly.
- Mold colonization in sagging flex duct from unmapped additions. On a Lennox Signature Series job at a 12,000 sq ft backcountry estate on John Street, our video inspection revealed an unmapped three-foot sag in flex duct under a 1960s addition, where decades of debris had formed a mold colony that starved the master bedroom zone of airflow. We extracted 40 lbs of compacted debris through a single 18-inch access we cut, then sealed the sag with bracing and new duct strap.
Lennox Service in Greenwich: What Local Conditions Mean for Your Equipment
Greenwich’s backcountry estates in 06831 often have three to five separate Harrison Lennox service-grade air handlers installed across different decades, with undocumented duct connections between additions — making video inspection mandatory before cleaning to map unmapped runs. We’ve walked into homes on Clapboard Ridge Road where the current owner inherited a system the previous owner’s property manager serviced piecemeal, with no documentation, no as-builts, and duct connections between a 1950s main house, a 1970s pool house conversion, and a 1990s guest wing that were never pressure-tested or cleaned. The Lennox SL280DFV in the basement might be fighting against a Signature Series handler in the attic, both pulling return air through the same cobbled chase, neither ever balanced as a system. That’s not a cleaning job you quote over the phone. That’s a job where Richard Anderson shows up with a camera snake, a notepad, and the patience to trace every run before we touch a vacuum.
Lennox Models & Products We Service in Greenwich
We work on the full Lennox residential and light commercial lineup: Signature Series variable-capacity systems, Merit Series single- and two-stage units, the EL18XCV heat pump line, and the SL280DFV condensing furnace. For critical components — blower motors, evaporator coils, circuit boards, pressure switches — we source OEM Lennox parts to maintain efficiency ratings and keep any remaining warranty intact. For non-critical items like flex duct, mastic, filter cabinets, and hardware, we’ll recommend quality aftermarket alternatives that perform the same function at lower cost. We stock common Lennox blower assemblies and coil treatments for fast Rye Lennox service and Greenwich turnaround; specialty parts typically arrive next-day from regional distributors.
Lennox Service Pricing in Greenwich
Most Lennox air duct cleaning jobs in Greenwich fall between these ranges:
- Standard single-system home (coastal colonial, cape): $350–$550
- Mid-size home with basement + attic handlers: $550–$750
- Backcountry estate, multi-handler (3–5 systems): $850–$1,400+
- Video inspection and mapping (estates with undocumented additions): $150–$250, credited toward cleaning if booked
- Duct sealing (mastic + tape, per linear foot): $4–$8
- Evaporator coil cleaning (independent service): $200–$350
What drives cost: number of air handlers, accessibility (crawl space vs. basement), condition of existing ductwork, and whether we need video mapping first. Every estimate includes a full system inspection, debris assessment, and written scope — no charge to look. Call (833) 754-6107 for an exact quote; estimates are free.
Serving Greenwich, NY — Our Local Coverage Area
We’re based in the Greenwich area and know this community well, including nearby Lennox in Cos Cob. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs — Lennox Air Duct Cleaning in Greenwich
No. We’re an independent service provider with over a decade of hands-on experience servicing Lennox systems across Greenwich’s diverse housing stock. We use OEM parts for critical components, but we’re not manufacturer-affiliated — which means we work on out-of-warranty systems, multi-brand retrofits, and jobs where authorized dealers won’t travel. Call (833) 754-6107 to discuss your system.
Probably. Coastal humidity in Old Greenwich wicks through unsealed seams and condenses on cooler metal; rust means moisture’s been present long enough to oxidize. Dryer Vent Cleaning in Greenwich addresses similar humidity-related issues. The seam itself may not be leaking air, but it’s leaking vapor — and that’s how you get mold inside the plenum. We pressure-test and seal with mastic, then inspect downstream for colonization. Call (833) 754-6107 and we’ll confirm whether it’s surface corrosion or active infiltration.
We don’t guess. Video inspection first — borescope cameras through existing registers and any access panels, plus smoke testing to find hidden returns. On a recent job near John Street, we found a complete zone that had been drywalled over in a 1980s renovation. We map before we cut, and we cut only where necessary. Every access gets sealed and insulated when we’re done.
Coil cleaning is a separate service — $200–$350 — because it requires different chemistry and access. We inspect coils during every duct cleaning and flag issues: Merit Series coils in crawl spaces are especially prone to pitting in Greenwich’s humidity. If the coil’s clean, we don’t sell you what you don’t need. I’ll tell you what you need. I won’t sell you what you don’t.
We’ve worked in worse. Crawl spaces in Greenwich’s older homes are tight, but our Nikro and Abatement Technologies gear is modular — we break down to components that fit through 18-inch hatches. We also carry portable HEPA containment for occupied homes. The real question is whether the crawl space itself is structurally safe; we’ll assess that during our free estimate and tell you straight if we need temporary access improvement.
Unlikely. In Greenwich’s converted pre-war homes, the iComfort reads differential pressure across the return path. If your coal chase or original masonry return has a bypass gap — air looping around the filter — the pressure sensor sees low resistance and assumes no filter. We smoke-test the return path, seal bypasses with sheet metal and mastic, and the alert clears without replacing a $400 thermostat. Call (833) 754-6107 for diagnostics — estimates are free.
Service Areas Near Greenwich
We run regular routes from Greenwich into Stamford and Darien along the I-95 corridor, plus White Plains and Port Chester for larger commercial jobs. For our New York City base, we also serve Gramercy Park, Hell’s Kitchen, and the East Village — though most Greenwich work keeps us in Fairfield County. Same-day scheduling is usually available for 06830, 06831, and 06836 when you call before noon.
Book Your Lennox Service in Greenwich Today
Richard Anderson — owner and lead technician — handles your job personally. Two decades of duct work, not generalist HVAC services. Contractor-grade equipment most residential crews never carry. From cleaning to repair to sanitizing — one call closes the loop on your air quality. Same-day appointments available in Greenwich when you call early. Call (833) 754-6107 for your free estimate.
Written by Richard Anderson, Owner & Lead Technician at Landmark Air Duct Cleaning Service New York, serving Greenwich and Fairfield County since 2004.