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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After
Before
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Before
AfterAir Duct Cleaning Company in DuPont, WA
Air duct cleaning in DuPont, WA typically runs $450 – $850 for a whole-home system and most jobs are scheduled within a few days of your call. DuPont’s unusual housing stock makes this work different from neighboring towns: nearly every home sits in Northwest Landing, built as a master-planned community between the late 1980s and early 2000s around the former DuPont dynamite works. Those original flexible duct runs and heat pumps are now hitting the same 20- to 30-year service window, block by block. We’re Hollis Air Duct Cleaning, part of the Garrison Partners family since 2004, and we dispatch crews to DuPont from our Seattle office. Call us at (361) 326-5060 for a free estimate.
Why DuPont Homes Are Different
DuPont sits in the damp Puget Sound lowlands west of the Cascade rain shadow, where wet winters and cool, humid summers create conditions you won’t find inland. That persistent moisture matters because dust and debris in ductwork stays put rather than being regularly blown through during a cooling season that barely exists here. Humid crawl-space conditions encourage mold and mildew growth inside flex ducts, especially in the original builder-installed runs that still serve most of Northwest Landing.
The housing stock itself is almost unnaturally uniform. Northwest Landing was built in tight construction phases, so whole streets still have identical original HVAC layouts, same-year heat pumps, and matching flex-duct runs. A technician’s scheduling map here looks a lot like the subdivision’s original plat map. When one house on a block books a cleaning, the identical system next door is usually due at the same time. We see this pattern constantly in DuPont: a single job becomes a referral cluster, and crews return to the same street multiple times in a season. There is little pre-1980 stock to complicate the work, so we rarely encounter the mixed retrofit and legacy systems common in neighboring towns like Steilacoom or Spanaway.
Our Main DuPont Services
DuPont homeowners call us most often for these three jobs. Each has its own DuPont page with full details.
Air Duct Cleaning in DuPont
We clean the complete supply and return duct network using a Rotobrush rotary brush system paired with a Nikro negative-air machine. The rotary brush scrubs debris loose from the interior duct walls while the negative-air unit pulls it out of your home, rather than redistributing it. In DuPont, we regularly find compacted dust and mildew in the original flex-duct runs of Northwest Landing homes, where the damp climate and decades of settled debris have combined. We inspect with a camera before and after so you see the difference. Air Duct Cleaning in DuPont
Dryer Vent Cleaning in DuPont
Dryer vent cleaning removes lint buildup from the transition duct, wall run, and exterior termination. In DuPont’s humid environment, lint compacts with moisture into dense blockages that restrict airflow and create genuine fire risk. We use professional-grade brushes and high-velocity air tools to clear the full run, then verify flow with an anemometer. Most DuPont dryer vents we service are in homes built during the same Northwest Landing construction phases, so the vent routing and exterior terminations follow predictable patterns our crews know well. Dryer Vent Cleaning in DuPont
Duct Sealing in DuPont
Duct sealing closes leaks in the supply and return plenums, trunk lines, and branch connections using mastic sealant and specialized tapes rated for HVAC use. In DuPont’s original flex-duct systems, we commonly find separations at the collar connections and pinholes where the outer jacket has degraded in crawl-space humidity. Sealing these leaks before cleaning, or as a standalone job, restores designed airflow and reduces the load on aging heat pumps. We price duct sealing as a flat rate per system, agreed in writing before work starts. Duct Sealing in DuPont
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in DuPont
We maintain parts and filtration products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman, and we clean systems built with those brands plus Rotobrush and Nikro equipment. Most DuPont homes have original builder-grade components now due for replacement or deep cleaning. See our brands for the full roster. Turnaround on stocked parts is typically same-visit.
Pricing for Air Duct Cleaning Company in DuPont, WA
| Service | Typical range in DuPont |
|---|---|
| Whole-home air duct cleaning (single system) | $450 – $650 |
| Whole-home air duct cleaning (larger home, 2+ returns) | $650 – $850 |
| Dryer vent cleaning (standard wall-run) | $150 – $250 |
| Dryer vent cleaning (extended or roof termination) | $250 – $350 |
| Duct sealing (single system, accessible crawl) | $400 – $600 |
| Duct sealing (complex routing, multiple leaks) | $600 – $900 |
| Air duct + dryer vent bundled | $550 – $800 |
| Camera inspection (standalone) | $125 – $175 |
What pushes DuPont prices toward the higher end: extended flex-duct runs in crawl spaces with standing moisture, multiple return trunks, or systems that haven’t been cleaned in 15-plus years and require extra agitation passes. What keeps them lower: standard Northwest Landing layouts we know by sight, good attic or crawl access, and recent prior cleaning. The price we write down before any work starts is the price you pay. No per-vent add-ons, no equipment surcharges at the door.
Neighborhoods We Serve in DuPont
Our crews know Northwest Landing’s original plat sections, from the earlier 1980s phases near the historic dynamite works to the final 2000s builds closer to I-5. Scheduling runs efficiently because the street layouts and system types repeat. Most DuPont appointments are routed within a day or two of your call.
- Northwest Landing (original 1980s – 1990s phases)
- Northwest Landing (2000s completion areas)
- DuPont Village (historic core, limited HVAC stock)
- Hoffman Hill area
- Palisades neighborhood
Service Area – Cities Near DuPont
We schedule DuPont work alongside calls from surrounding Pierce and Thurston County towns. Our regular service radius includes Steilacoom, WA, Lakewood, OH, University Place, WA, and Spanaway, WA. Dispatch is coordinated from our Seattle office, with crews assigned by proximity and job type to keep arrival windows tight.
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 Company in DuPont
No permit is required for residential air duct or dryer vent cleaning in DuPont. Northwest Landing HOA covenants do not restrict this work, though we recommend notifying them if our van will be parked on a shared street for an extended period. We carry proof of insurance and can provide a certificate of coverage if your HOA requests it.
Most DuPont appointments are scheduled within two to five business days, depending on season and whether we’re already working your street. Because Northwest Landing’s concentrated layout lets us cluster jobs, we sometimes open same-week slots when neighbors book together. Call (361) 326-5060 to check current availability.
We cover the full city limits, though Northwest Landing represents nearly all of our DuPont volume. The few pre-1980 homes in DuPont Village or near the historic core have different duct configurations, and we’re equipped for those too. We do not charge extra for travel within DuPont city limits.
What happens when you call
- 1A real person answersNo phone trees - talk to a local air duct cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What DuPont Customers Say
"Sealed some leaking duct joints in the crawl space with mastic. Rooms that were always cold now get air."
- Ronald W."Dryer vent was packed with lint and took two hours to dry a load. Cleaned it out from the roof cap down. One cycle again."
- Paula Q."No sales pitch. Told me which parts of the system were fine and only cleaned what needed it."
- Ted L.