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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Before
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Before
AfterAir Duct Cleaning Company in Sammamish, WA
Air duct cleaning in Sammamish typically runs $400 – $800 for a whole-home system, with most jobs scheduled within a week and completed in a single day. The dominant job here isn’t urban dust removal; it’s pulling 20 – 40 years of fir pollen, rodent debris, and damp attic mold from original builder-grade flex duct in master-planned plateau homes that have never been professionally cleaned. Call (361) 326-5060 for a free written estimate.
We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and we’ve built our operation around the realities of Sammamish’s housing stock: large two-story homes from the 1980s – 2000s with forced-air gas furnaces, unconditioned attics, and ductwork that sat untouched through decades of wet winters and heavy pollen springs. Our crews dispatch from the Seattle office and carry Rotobrush rotary systems and Nikro negative-air machines designed for exactly this kind of job.
Why Sammamish Homes Are Different
Sammamish’s master-planned plateau developments, Klahanie, Trossachs, Beaver Lake, and Sahalee, were built almost entirely between 1985 and 2005. That means most homes here have original flex-duct systems in unconditioned attics, not the rigid sheet-metal trunks common in older Seattle neighborhoods or the newer sealed systems going into Bellevue rebuilds. The work is different because the materials are different: flex duct crushes, sags, and collects debris at low points in ways rigid metal doesn’t.
The plateau’s elevation, roughly 400 – 500 feet above Lake Sammamish, puts homes in a wet marine climate with some of the highest annual rainfall in the metro. Attic ducts stay damp through winter, which feeds mold spores. Come spring, the surrounding Douglas fir and alder forest drops pollen and needle loads that pull straight into return intakes. And because nearly every lot backs to wooded greenbelt, our crews regularly find Douglas squirrel nests and field mouse runs in attic trunks, complete with shredded flex-duct insulation and cached pine cones. You won’t see that pattern in the flatter, cleared suburbs west of the lake.
Our Main Sammamish Services
Most Sammamish homeowners call us for one of three jobs. Each has its own page with full pricing and process details.
Air Duct Cleaning in Sammamish
We clean the full supply and return network with a Rotobrush rotary brush system and Nikro negative-air machine, pulling debris from every register back to the trunk. In Sammamish, this usually means dislodging compacted fir pollen and rodent nesting material from 20-plus-year-old flex duct, then sealing access points to prevent re-entry. Before-and-after photos are included so you see what came out. Air Duct Cleaning in Sammamish
Dryer Vent Cleaning in Sammamish
Dryer vent blockages in Sammamish often involve lint packed with fir needles that blew into exterior hoods during spring storms. We run a rotary brush through the full vent line to the termination, check back-pressure with a manometer, and verify airflow at the hood. Long two-story runs common in plateau homes are a particular fire risk if airflow drops below 1,500 FPM. Dryer Vent Cleaning in Sammamish
Duct Sealing in Sammamish
Sammamish’s original flex-duct systems lose 20 – 30 percent of conditioned air at joints and sag points, especially where builders used tape instead of mastic. We seal accessible trunk lines and plenum connections with duct sealing mastic, then pressure-test to confirm the reduction in leakage. The payoff is lower gas bills and more even temperatures across those large two-story floor plans. Duct Sealing in Sammamish
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 Sammamish
We stock parts and filtration products from Honeywell, Aprilaire, and Abatement Technologies for common Sammamish furnace and air-handler configurations. Most replacement filters and media are available same-day; specialty HEPA upgrades typically arrive within 48 hours. See our brands for the full equipment roster.
Pricing for Air Duct Cleaning Company in Sammamish, WA
| Service | Typical range in Sammamish |
|---|---|
| Whole-home air duct cleaning (2,500 – 3,500 sq ft) | $400 – $600 |
| Whole-home air duct cleaning (3,500 – 4,500 sq ft) | $550 – $800 |
| Dryer vent cleaning (single-family, one story) | $120 – $180 |
| Dryer vent cleaning (two-story or extended run) | $180 – $250 |
| Duct sealing (partial, accessible trunk lines) | $350 – $550 |
| Duct sealing (whole-home, including returns) | $600 – $950 |
| Rodent debris remediation and sanitizing | $200 – $400 add-on |
| Mold treatment in ductwork (EPA-registered) | $250 – $450 add-on |
Prices push toward the high end in Sammamish when crews encounter collapsed flex-duct sections requiring access-panel cuts, or when rodent contamination calls for HEPA containment and sanitizing. The price we write down before any work starts is the price you pay. It does not move at the door.
Neighborhoods We Serve in Sammamish
We schedule Sammamish jobs with routing that groups plateau neighborhoods by day, keeping drive time down and arrival windows tight. Most appointments are available within five to seven business days.
- Klahanie
- Trossachs
- Beaver Lake
- Sahalee
- Plateau Meadows
Service Area – Cities Near Sammamish
Crews dispatch from the Seattle office and cover the full eastside corridor. We regularly schedule work in Redmond, WA, Bellevue, WA, Kirkland, WA, and Duvall, WA, often routing Sammamish appointments alongside jobs in those cities to keep response times reasonable.
Serving Sammamish, WA - Our Local Coverage Area
We’re based in the Sammamish 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 Sammamish
Most plateau developments, including Klahanie and Trossachs, require homeowners to notify the HOA of any contractor vehicle on-site, but duct cleaning does not typically need board approval since it’s internal work with no exterior modification. We carry proof of insurance and background-check documentation if your HOA office requests it. Call (361) 326-5060 and we’ll coordinate the paperwork.
We usually book Sammamish appointments within five to seven business days, sometimes sooner if we’re already routing on the plateau. We do not promise same-day dispatch; this is scheduled work that requires a written price agreement and a confirmed arrival window under The Garrison Standard.
We remove nesting debris, sanitize affected duct runs, and seal accessible entry points with rodent-proof materials. If flex duct is chewed through and needs replacement, we’ll show you the damage and quote the repair before proceeding. We do not perform pest extermination; we coordinate with your wildlife control company if active trapping is needed first.
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 Sammamish Customers Say
"They checked each section with a camera and showed me the dust before and after. Thorough and honest."
- Nicole H."Duct sealing along with the cleaning cut our summer bill. Straight talk and fair price."
- Gwen O."Sealed some leaking duct joints in the crawl space with mastic. Rooms that were always cold now get air."
- Ronald W.