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 Seattle, CA | Kestrel Air Duct Cleaning
We provide independent Lennox Air Duct Cleaning - Seattle and the single factor that shapes this work more than anything else is the city’s marine humidity. A Lennox system in Seattle moves damp air through ductwork for most of the year, which means the job is rarely just about dust. It’s about moisture, mold, and biofilm. If you own a Lennox furnace or heat pump in Seattle, call Kestrel Air Duct Cleaning at (469) 972-3151 for a straight answer and a written price before we touch a single vent.
Our technicians have worked on Lennox equipment across this city for years. We are an independent shop. We are not a Lennox dealer, not manufacturer-affiliated, and not authorized by Lennox in any capacity. What we are is familiar with how Lennox cabinets, coils, and duct interfaces behave in Seattle’s specific housing stock, from retrofitted Craftsman bungalows in Ballard to split-levels in Rainier Valley. For Lennox sales & service guidance, we’ll point you straight, but for cleaning the ducts attached to your Lennox system, we’re the ones who show up, answer the phone, and stand behind the work in writing.
Why Seattle Residents Choose Us for Lennox Service
Most companies that clean ducts treat every system the same. We don’t, because a Lennox variable-speed air handler in a vented Seattle crawl space fails differently than a basic single-speed unit in a dry inland city. Dale Whitmore, our owner, spent his early twenties doing general HVAC maintenance before he realized the duct side was where the real neglect lived. He trained at Los Angeles Trade-Technical College and has been inside enough Seattle crawl spaces to know exactly what marine air does to a Lennox coil over five or six years.
We answer calls with a live person, we show up in the window we gave you, and we put the price in your hands in writing before work begins. Every job runs under the Kingswell Guarantee: a defined arrival window, a clean job site, a written guarantee on the work, and a free return visit if it fails within the guarantee period. That’s not a courtesy. It’s the standard we’ve operated under since 2004. Our techs are background-checked, uniformed, and they carry Rotobrush rotary brush systems, Nikro negative-pressure units, and Abatement Technologies HEPA filtration. Real tools, not a shop vac from a big-box store.
Common Lennox Air Duct Cleaning Problems We Solve in Seattle
- Rust and biofilm on Lennox cased coils. Seattle’s relative humidity sits above 70% for much of the year, and Lennox CX35 cased coils hold moisture because forced-air systems here run short, low-intensity cycles that never bake the cabinet dry. We find pink and gray biofilm on coils that are only three or four years old. We clean them, treat them with antimicrobial products, and explain how to keep them from coming back.
- Flex duct collapse at takeoffs on variable-speed air handlers. The Lennox CBX32MV air handler moves a lot of air, and when a contractor retrofits flex duct into a vented crawl space under a Ballard or Fremont Craftsman, condensation pools at the takeoffs. The flex sags, then collapses. We replace degraded runs, seal takeoffs with mastic, and restore the airflow your system was designed to move.
- Premature blower motor failure from damp return air. Lennox constant-torque motors, like those in the ML180 furnace line, pull return air from crawl spaces that never fully dry. Pollen and moisture coat the motor windings and bearings. We clean what can be cleaned and tell you honestly when a motor replacement makes more sense than another cleaning cycle.
- Cabinet seam rust and insulation degradation in Signature series equipment. We see SLP98V furnaces installed in unconditioned spaces where rust creeps along cabinet seams and insulation starts to shed. That rust and fiber material ends up in your ducts. We address the contamination and recommend sealing or cabinet repairs before it fouls the coil and blower again.
- CompleteHeat legacy systems with failing heat exchangers. The old Lennox CompleteHeat HM30 and HM60 units were common in 1990s Seattle retrofits, and many are still running. They combine water heating with air heating in one cabinet, and when they age, they shed rust and scale into the ductwork. We clean the ducts and tell you up front whether the system is worth saving.
Lennox Service in Seattle: What Local Conditions Mean for Your Equipment
Here’s the thing about Seattle that doesn’t show up on a generic Lennox service page. The city’s marine west-coast climate delivers near-constant overcast and elevated humidity rather than dramatic rainfall events. Crawl spaces stay damp all twelve months. That means a Lennox system retrofitted into a pre-1940 Craftsman home in Ballard or Fremont often has flex duct runs that grow mold even when the home is heated regularly. In drier inland cities, dust is the primary contaminant. In Seattle, it’s biological. Technicians working in retrofitted Craftsman homes in Ballard routinely find flex duct coated with a mix of Douglas fir and western red cedar pollen, mold spores, and condensation residue. That profile requires antimicrobial treatment, not just mechanical cleaning. A brush runs through the duct and removes loose debris, but if the biofilm on the coil and the condensation on the duct walls aren’t addressed, the problem returns within a season. This is the single most important difference between cleaning ducts in Seattle and cleaning them almost anywhere else, and it’s why we treat Lennox coils and duct interiors as a moisture problem first and a dust problem second.
Lennox Models & Products We Service in Seattle
We work on Lennox equipment across the board: Merit Series ML180 furnaces and ML14XC1 air conditioners, Elite Series EL296V furnaces and EL18XPV heat pumps, and Dave Lennox Signature Collection SLP98V furnaces and XP21 heat pumps. We also still see legacy CompleteHeat HM30 and HM60 systems in older Seattle homes, and we service those too. For critical components like control boards and blower motors, we use OEM Lennox parts whenever they’re available. For duct sealing and coil treatments, we use high-quality aftermarket materials that meet or exceed OEM specs, because those materials are often better suited to Seattle’s moisture-driven corrosion than factory equivalents. We generally recommend repairing and sealing existing Lennox ductwork rather than replacing entire systems unless the heat exchanger or coil is beyond saving.
Lennox Service Pricing in Seattle
Air duct cleaning for a Lennox system in Seattle typically runs between $450 and $900 for a full system, depending on the size of the home, the number of returns, and how much contamination has built up. A small condo with four or five runs sits at the low end. A three-story Ballard Craftsman with retrofitted flex duct and a fouled evaporator coil sits at the high end. Evaporator coil cleaning and antimicrobial treatment add $150 to $350, and duct sealing runs $25 to $40 per access point. We give you one flat price per system before work starts, in writing, and that price does not change at the door. Call (469) 972-3151 for a free estimate, and we’ll tell you exactly what your Lennox system needs and what it will cost.
Serving Seattle, WA - Our Local Coverage Area
We’re based in the Seattle 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 Seattle
Because the crawl spaces under those pre-1940 homes never fully dry. Seattle’s marine humidity keeps them damp year-round, and retrofit ductwork routed through those spaces stays cool and moist. Mold grows on the duct walls and on the evaporator coil even when the furnace runs regularly. In drier cities, dust is the main problem. Here, it’s biology. Call (469) 972-3151 and we’ll inspect your ducts and tell you what’s actually growing in there.
Yes, and it’s more significant than most people realize. Seattle’s mild winters mean Lennox furnaces in Capitol Hill and similar neighborhoods run short, low-intensity heating cycles instead of long, hot ones. The coil and duct interior never get hot enough to evaporate the moisture that accumulates between cycles. That sustained dampness is exactly what lets mold and biofilm establish themselves. It’s not a defect in your Lennox equipment. It’s the local climate interacting with how the system was installed. We can clean the ducts and treat the coil, but we’ll also tell you if our Dryer Vent Cleaning in Seattle or insulation in the crawl space would help break the cycle.
We see a lot of Merit Series ML180 furnaces in South Seattle and Rainier Valley postwar homes, many with return ducts that pull air from vented crawl spaces and cake the blower motor with pollen and damp dust. We see Elite Series EL296V furnaces in larger remodeled homes, where variable-speed blowers push condensation into flex duct takeoffs. And we still find legacy CompleteHeat HM30 and HM60 units in 1990s retrofits, shedding rust into the ductwork as they age. Each line has a typical failure profile in Seattle, and we tailor the cleaning to it.
For critical components like control boards and blower motors, we use OEM Lennox parts when they’re available. For duct sealing, coil treatments, and antimicrobial applications, we use high-quality aftermarket materials chosen specifically for Seattle’s moisture conditions. They meet or exceed OEM specs, and in some cases they outperform the factory materials in a damp crawl space. We’ll tell you exactly what we’re using and why before we start.
Coniferous pollen is fine and sticky, and Seattle has a lot of it. Ballard, Fremont, Queen Anne, and Capitol Hill are full of Douglas fir and western red cedar, and that pollen works its way into return ducts and onto evaporator coils. Mixed with condensation, it forms a paste that clings to coil fins and duct walls. It reduces airflow, feeds mold growth, and it’s one of the reasons a simple brush cleaning isn’t enough in Seattle. The coil needs treatment, and the ducts need negative-air extraction to pull the loosened material out rather than pushing it into your living space. If your allergies are worse at home than outside, call (469) 972-3151 and we’ll take a look.
Service Areas Near Seattle
Kestrel Air Duct Cleaning serves Seattle and the surrounding region, and we also operate in other major metros for Lennox owners who need the same standard of work. If you’re outside our immediate Seattle service area, see Seattle service area details or check our Lennox service in Nashville-Davidson and Lennox service in Las Vegas pages for coverage in those cities.
Book Your Lennox Service in Seattle Today
If your Lennox system’s ducts haven’t been cleaned in years, or if you’re smelling musty air every time the blower kicks on, call us. We answer with a live person, we give you a written price before work starts, and we stand behind the job for a full year. Clean ducts, straight answers, price upfront - that’s the whole deal. Call (469) 972-3151 today.
Written by Dale Whitmore, Owner at Kestrel Air Duct Cleaning, serving Seattle since 2004.