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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AfterFast, Reliable Air Duct Cleaning Across DuPont
Air duct cleaning in DuPont typically runs $350 – $650 for a full residential system, and most Northwest Landing homes need both cleaning and sealing once the original flex duct hits 20 – 30 years. We’re the Air Duct Cleaning crew that serves DuPont from our Seattle office, dispatching background-checked, uniformed technicians who arrive inside the quoted window with a written price before any work starts. DuPont sits just off I-5 between Tacoma and Olympia, so we’re on your street regularly – not passing through from some distant hub. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is DuPont’s Preferred Air Duct Cleaning Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our DuPont work runs block-by-block through Northwest Landing for a reason. Almost every home here was built in tight construction phases between the late 1980s and early 2000s, so whole streets share identical original HVAC layouts – when we clean one system, the neighbor’s is usually due too.
Our technicians follow The Garrison Code on every DuPont job: arrive inside the window, price in writing, complete the work by the book, and leave the site clean. Every job carries our 365-Day Done Right Promise – if the work fails within a year, we return and make it right at no charge, including a free second visit. Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues.
Air Duct Cleaning Services in DuPont
Air Duct Cleaning Services in DuPont mean source removal from your entire forced-air system – supply ducts, return ducts, registers, and the air handler cabinet – using professional-grade rotary brush systems and negative-air machines. For a typical Northwest Landing home, you’re looking at $350 – $550 for a full system clean. Most DuPont homeowners book this when they notice dust reloading quickly after filter changes, uneven heating from room to room, or a musty crawl-space smell that follows the ductwork.
Residential Duct Cleaning
We clean the complete duct network in your home with agitation tools under controlled negative pressure – debris is loosened, then immediately extracted so nothing recirculates. A standard Northwest Landing single-family home with original flex duct usually takes 3 – 4 hours. We photograph before and after so you see what came out.
Video Inspection
Our techs run a camera through your ductwork before quoting any sealing work. In DuPont, this often reveals crushed flex at the plenum or disconnected runs dumping conditioned air into the crawl space – problems no amount of cleaning alone will fix. The inspection itself runs $150 – $250 and is credited toward your cleaning if you proceed.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
HVAC Duct Cleaning in DuPont
HVAC Duct Cleaning in DuPont addresses the full mechanical system – not just the visible vents, but the heat pump cabinet, blower assembly, evaporator coil, and the plenum connections where original builder flex duct often fails after two decades of Puget Sound humidity. A complete HVAC duct cleaning with coil and cabinet service runs $450 – $650 in this market. DuPont’s minimal air-conditioning season means dust and mildew sit undisturbed inside flex runs year-round – the debris never gets blown through, so homeowners don’t notice until the system starts struggling or the crawl space smells.
Supply and Return Duct Cleaning
Supply ducts push conditioned air to your rooms; returns pull it back. In Northwest Landing homes, we regularly find return ducts crushed flat behind the air handler while supplies remain intact – the imbalance loads your filter in weeks instead of months. We clean both sides and measure airflow before and after.
Full System Cleaning with Duct Sealing
Cleaning disconnected or leaking ductwork just re-contaminates the system. When our camera finds detached runs or crushed flex – common in 1990s DuPont builds – we quote sealing and reconnection with mastic and mechanical fasteners. A clean-plus-seal package typically runs $550 – $850 depending on access and linear footage.
Trusted Brands We Service in DuPont
We run professional-grade equipment, not hardware-store gear. Our rotary brush systems come from Rotobrush, our negative-air machines from Nikro, and we stock filtration products from Honeywell, Aprilaire, and Guardsman – the same brands commercial crews specify. For DuPont homeowners, this means parts and filters that fit your system are already on the van, not ordered from a warehouse across the state. We don’t guess at sizing or compatibility. We match what’s in your Northwest Landing home and keep common configurations in stock because we’ve seen them dozens of times on the same street.
Common Air Duct Cleaning Problems We See in DuPont Homes
- Crushed flex duct at the plenum. Original builder-installed flex in Northwest Landing homes often collapses where it meets the air handler after 20 – 30 years. We find this behind the unit where homeowners never look, and it starves the return until the blower strains and the filter loads fast.
- Disconnected runs dumping into crawl spaces. The same humid conditions that encourage mildew also degrade duct tape and zip-tie connections. We regularly pull detached supply or return ends that have been conditioning the dirt under your home instead of your rooms.
- Mildew and biofilm inside flex liners. DuPont sits in the damp Puget Sound lowlands west of the Cascade rain shadow. Persistent moisture with almost no forced drying from AC means organic growth accumulates inside ductwork that drier climates would naturally desiccate.
- Identical system failures across whole blocks. Because Northwest Landing was built in synchronized phases, when one 1997 home needs cleaning and sealing, the identical system next door is usually due within the same season. We schedule accordingly and offer neighbor booking discounts.
Pricing for Air Duct Cleaning in DuPont, WA
Here’s what air duct cleaning costs in DuPont’s market, with ranges that reflect actual job scope:
| Service | Typical Range in DuPont |
|---|---|
| Full residential duct cleaning (single system) | $350 – $550 |
| HVAC duct cleaning with coil and cabinet | $450 – $650 |
| Video inspection (credited if work proceeds) | $150 – $250 |
| Clean plus duct sealing / reconnection | $550 – $850 |
| Commercial duct cleaning (per system) | $800 – $1,500 |
What moves you within these ranges: system size, access difficulty (crawl space height, attic hatch location), and whether we find disconnected or crushed duct that needs sealing beyond standard cleaning. We quote one flat price per system, agreed in writing before any work starts. No per-vent pricing. No add-ons at the door. Call (361) 326-5060 for a free estimate – we’ll inspect, photograph, and price it on the spot.
We Also Serve Cities Near DuPont
Our crews work Air Duct Cleaning in DuPont and the surrounding communities regularly – Steilacoom along the shoreline, Lakewood to the north, University Place, and Spanaway to the east. Same equipment, same written pricing, same 365-Day Done Right Promise at every stop.
Serving DuPont, WA - Our Local Coverage Area
We’re based in the DuPont 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 About Air Duct Cleaning in DuPont
You likely need both. At 25 – 30 years, original flex duct in Northwest Landing homes is typically showing crushed returns, disconnected plenum connections, or mildew inside the liner – problems cleaning alone won’t solve. We run a video inspection first, then quote source removal plus any sealing or reconnection needed. Call (361) 326-5060 and we’ll show you exactly what your system looks like inside.
Northwest Landing was built in tight construction phases, so whole streets share identical original heat pumps and flex-duct runs installed the same year. When one hits the 20 – 30 year failure window, the neighbors’ identical systems are usually close behind. We see this constantly on blocks off Barksdale Avenue and throughout the original plat – it’s why we offer neighbor booking discounts when multiple homes on the same street schedule together.
DuPont’s persistent lowland humidity and minimal AC season mean dust and biofilm accumulate inside ductwork without the regular drying and blow-through that hotter climates provide. Mold and mildew grow inside flex liners that would stay dry elsewhere, and duct tape adhesives fail faster in damp crawl spaces. Our cleaning protocol includes moisture assessment and, when needed, antimicrobial treatment of the affected runs.
Yes. Our source-removal method meets NADCA guidelines – agitation under negative pressure, contained extraction, and protection of the HVAC components during service. We document with before-and-after photos for every DuPont job. The 365-Day Done Right Promise backs the work in writing: if it fails within a year, we return at no charge.
Cleaning fixes the dust problem if your ducts are intact but dirty. If our camera finds crushed, disconnected, or degraded flex duct – common in 1990s Northwest Landing builds – sealing and reconnection is the real fix, and cleaning without it just re-contaminates the system. We quote both options honestly after inspection. Call (361) 326-5060 for a free estimate and we’ll show you what you’re dealing with.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving DuPont and the South Sound since 2004.