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.
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AfterLennox Air Duct Cleaning in San Francisco, CA | Kestrel Air Duct Cleaning
We clean Lennox ductwork across San Francisco, and the quick answer is this: most Air Duct Cleaning - San Francisco whole-system cleanings run between $450 and $900 depending on the number of returns and how much the marine layer has done to your flex duct. What makes our Lennox work different in this city is that we’re not just pulling dust, we’re dealing with a fog-belt moisture problem that leaves mold inside duct liners most homeowners never see. Call (469) 972-3151 and we’ll give you a written price before anyone touches a vent.
Kestrel Air Duct Cleaning is an independent Lennox service provider. No manufacturer affiliation, no warranty link, just technicians who know exactly how Lennox duct interfaces and coil cabinets behave in San Francisco’s Victorian flats and fog-belt row homes. We’re part of the Kingswell family of companies, founded in 2004, and every job operates under the Kingswell Guarantee: written price first, defined arrival window, clean job site, and a 365-Day Done Right Promise in writing.
Why San Francisco Residents Choose Us for Lennox Service
Dale Whitmore, our owner, spent years doing general HVAC maintenance before he figured out the duct side was where the neglect lived. He got his formal training at Los Angeles Trade-Tech, then spent well over a decade cleaning ductwork in homes where the systems had been ignored since the first Bush administration. He built Kestrel around a simple idea: say the price, show up when you said you would, leave the place cleaner, and stand behind the work in writing.
For San Francisco Lennox owners, that matters more than most cities. The ductwork here hides problems. A Lennox EL296V in the Outer Sunset can look fine from the register while the flex duct behind it is collapsing and the liner has gone black with mold. Our technicians are background-checked and uniformed, and they show up for our Dryer Vent Cleaning in San Francisco and duct jobs with Rotobrush rotary brush systems, Nikro negative-pressure units, and Abatement Technologies HEPA filtration. Real equipment, not a shop vac and a coupon.
Common Lennox Air Duct Cleaning Problems We Solve in San Francisco
- Mold inside flex duct liners. The marine layer keeps crawl spaces damp year-round west of Twin Peaks. Condensation forms on cold duct walls even in summer, and Lennox systems with older flex runs get interior liner growth that most owners never notice because the heat rarely runs long enough to reveal airflow loss.
- Collapsed and sagging flex duct. Lennox retrofits in Edwardian flats typically used lightweight flex pulled through tight floor cavities. Decades of fog-season humidity degrade the outer jacket, the inner coil sags, and airflow drops. The blower works harder, the rooms never quite warm, and the system burns more gas than it should.
- Evaporator coil contamination. Lennox cased coils in San Francisco’s tight closet installs trap dust and biological growth. When the system sits idle for months in the mild climate, that contamination hardens and then gets pushed through supply ducts the first cold morning you fire up the heat.
- Blower motor and wheel fouling. Moisture-laden air in western neighborhoods makes dust stick to Lennox blower wheels. The wheel goes off balance, airflow drops, and most owners don’t notice until heating season when the register airflow feels weak and the utility bill climbs.
- Cross-contaminated duct runs in multi-unit flats. Victorian and Edwardian conversions often share or cross-connect duct runs between floors. One unit’s dust and moisture problems become a neighbor’s problem, which complicates both cleaning scope and pricing if the technician doesn’t know what they’re looking at.
Lennox Service in San Francisco: What Local Conditions Mean for Your Equipment
Here’s the thing about San Francisco that generic Lennox pages miss entirely. In the Outer Sunset and Outer Richmond, the near-daily marine layer keeps relative humidity high year-round, and that moisture condenses inside crawl-space ducts during cool mornings even in July. We routinely pull flex duct sections from 1940s stucco row homes in the Avenues and find the interior liner visibly darkened with mold. The homeowner had no idea because Karl the Fog doesn’t announce itself at the register, and a system that runs thirty minutes a day in a mild climate never shows the airflow loss you’d notice in a colder city. Compare that to Oakland or San Jose, where duct cleaning is mostly about particulate buildup. Here it’s a mold-and-mildew remediation job as much as a dust removal one. Lennox owners in the western half of San Francisco should expect a microbial growth assessment on every inspection, not as an add-on but as the baseline.
Lennox Models & Products We Service in San Francisco
We work on the full Lennox residential lineup: the Dave Lennox Signature Collection including SL280V and SL297V modulating furnaces, the Elite Series EL296V and EL296E, the Merit Series ML180 and ML193, and the older CompleteHeat HM30 units still running in some San Francisco basements. For critical components like blower motors and control boards, we use OEM Lennox parts. For flex duct, mastic, and insulation, we use quality aftermarket materials that meet or exceed OEM spec. Most duct cleaning and targeted repairs cost far less than replacing a functioning Lennox system, and we’ll tell you straight when corrosion or widespread mold makes replacement the smarter long-term call.
Lennox Service Pricing in San Francisco
Most San Francisco Lennox duct cleanings run between $450 and $900 for a whole system. What drives the cost: the number of returns and supply runs, whether we’re accessing crawl-space ductwork in a Sunset row home or closet-installed duct in a Pacific Heights flat, and whether mold remediation or flex duct replacement is required. A single-system flat in a 1930s stucco building might land at the lower end. A two-floor Edwardian with cross-connected runs and active microbial growth will push higher. Every estimate is free and written before we start. No per-vent pricing, no door-step revisions, no bait-and-switch. Call (469) 972-3151 and we’ll tell you exactly what your Lennox system needs and what it costs.
Serving San Francisco, CA - Our Local Coverage Area
We’re based in the San Francisco 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 Francisco
Yes, and it matters more here than in most cities because the stagnation is the problem. A Lennox system that sits idle for months in San Francisco’s fog-belt humidity gives moisture time to condense inside the ducts and microbial growth time to establish. The dust isn’t the main threat, the mold is. Call (469) 972-3151 for an assessment.
It depends on how deep the growth has penetrated the liner. Surface contamination can often be addressed with negative-air extraction and anti-microbial treatment. But when the liner is saturated or the flex duct has degraded to the point of collapse, replacement is the only honest fix. We’ll show you what we found and give you a written price either way.
Victorian and Edwardian flats in San Francisco were built before central forced-air heating, so the ductwork was retrofitted through tight crawl spaces and floor cavities. That means older, often undersized flex duct with poor support, and in many multi-unit buildings, shared or cross-connected runs between floors. Cleaning scope and pricing have to account for that reality, or the job leaves problems behind.
The marine layer keeps crawl spaces in the western half of San Francisco damp year-round, and that moisture condenses on cold duct walls during cool mornings. Over time, the interior liner of flex duct grows mold, and the homeowner rarely knows because the mild climate means the system runs too infrequently to reveal the airflow loss. It’s a slow, silent problem. Call (469) 972-3151 and we’ll inspect it.
For critical components like blower motors and control boards, yes, we use OEM Lennox parts. For flex duct, mastic, and insulation, we use quality aftermarket materials that meet or exceed OEM specifications. We’ll tell you which is which on the written estimate, so you know exactly what you’re paying for.
Service Areas Near San Francisco
We serve San Francisco homeowners throughout the city, from the Outer Sunset to the Richmond, and our Lennox expertise extends to surrounding communities. If you’re looking for Lennox service in Seattle, we can point you to our sister location. Comparing options? See Lennox service in Nashville-Davidson for how the same standards apply in a very different climate. And for full context on our Lennox sales & service capabilities, or our broader San Francisco service area, those pages cover the details.
Book Your Lennox Service in San Francisco Today
Clean ducts, straight answers, price upfront, that’s the whole deal. If your San Francisco Lennox system hasn’t been cleaned in years, or if you’ve noticed a musty smell when the heat kicks on, call (469) 972-3151. We’ll give you a free estimate in writing before any work begins, and the 365-Day Done Right Promise covers every job.
Written by Dale Whitmore, Owner at Kestrel Air Duct Cleaning, serving San Francisco since 2004 under the Kingswell Guarantee.