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.
Air Duct Cleaning Company in Brier, WA
Air duct cleaning in Brier, WA typically runs $350 – $650 for a whole-home system and should include before-and-after photos of your own ducts. Brier’s damp marine climate and 1970s – 1990s housing stock create conditions you won’t find in drier or newer markets: original galvanized duct that rusts, flex duct that sags on sloped wooded lots, and mold-friendly humidity that stays high eight months of the year. We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and our crews serve Brier from our Seattle office. Call (361) 326-5060 for a free estimate with a written price that won’t change at your door.
Why Brier Homes Are Different
Brier sits in an unincorporated wedge of Snohomish County, squeezed between Mountlake Terrace and Bothell, and that status changes everything about how ductwork gets maintained here. There’s no city building department to inspect HVAC modifications, no permit fee to catch a botched DIY repair, and no third-party verification that a duct cleaning was done thoroughly. Homeowners are on their own to vet who’s crawling through their crawlspace.
The housing stock reinforces the problem. Most Brier homes were built between the 1970s and 1990s on generous wooded lots, many with original galvanized steel duct or early flex duct that’s now sagging and debris-packed after forty-plus years. The big tract build-outs off Brier Road and along 228th Street SW often have undersized return ducts that starve airflow once filters load up, forcing the system to work harder and pull more contaminants through gaps.
The climate finishes the job. Brier’s damp, cool Pacific Northwest marine climate keeps relative humidity elevated from October through May, encouraging mold and mildew inside ductwork. Even the short dry summers don’t fully dry things out. After heavy autumn rains, our techs regularly find standing water in crawlspace duct runs on sloped lots off 228th Street SW, water that wicks into flex duct and becomes a mold bloom the homeowner never sees.
Our Main Brier Services
These are the three services Brier homeowners call us about most. Each has its own page with full pricing, process details, and local specifics.
Air Duct Cleaning in Brier
We clean supply and return ducts, registers, and the main trunk lines using a Rotobrush rotary brush system combined with negative-air extraction. In Brier, this means addressing the mold-prone conditions in crawlspace flex duct and the rust particulate that shakes loose from aging galvanized runs. We photograph the interior of your ducts before and after, so you see what came out. Every job gets a written price before we start and is covered by our 365-Day Done Right Promise. Air Duct Cleaning in Brier has the full breakdown.

Dryer Vent Cleaning in Brier
Dryer vent cleaning in Brier means dealing with longer vent runs common in 1970s – 1990s construction and the lint accumulation that accelerates when vents have to push through wet Pacific Northwest air. We clean the full run from the back of your dryer to the exterior termination, check airflow with a meter, and verify the exterior damper operates freely. This is not a per-foot job; it’s one flat price per system, agreed in writing before we touch anything. Full details are on our Dryer Vent Cleaning in Brier page.

Duct Sealing in Brier
Duct sealing closes the gaps and seams that leak conditioned air into your crawlspace or attic. In Brier’s older homes, we often find disconnected flex duct, failed tape at joints, and rust holes in galvanized trunk lines that the homeowner never knew existed. We use mastic sealant and mechanical fasteners, not tape alone, and we pressure-test afterward to verify the seal. Because Brier has no municipal inspection requirement, this is often the first time these systems get properly sealed. Learn more on our Duct Sealing in Brier page.

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 Brier
We stock parts and filters from Aprilaire, Abatement Technologies, and Guardsman, and we carry Rotobrush rotary brush systems on every truck. Most filter replacements and standard repairs are same-visit. For full equipment coverage, see our brands.
Pricing for Air Duct Cleaning Company in Brier, WA
| Service | Typical range in Brier |
|---|---|
| Whole-home air duct cleaning (single system) | $350 – $650 |
| Additional HVAC system (dual-zone homes) | $200 – $350 |
| Dryer vent cleaning | $120 – $220 |
| Duct sealing (typical single-family home) | $800 – $1,500 |
| Register and grille deep cleaning | $15 – $25 each |
| UV light installation (mold prevention) | $300 – $500 |
| Main trunk line cleaning (separate from whole-home) | $150 – $300 |
| Crawlspace duct inspection with photo report | $75 – $125 |
What pushes Brier jobs toward the higher end: multiple systems, crawlspace access limited by standing water or tight clearances, heavy mold remediation requiring antimicrobial treatment, and homes with original galvanized duct that needs careful handling. What doesn’t change the price: we quote one flat price per system, agreed in writing before work starts. No per-vent add-ons, no surprise charges once the truck is in your driveway.
Neighborhoods We Serve in Brier
We work across all of Brier’s residential areas, from the older build-outs near the city boundary to the subdivisions that filled in during the 1980s and 1990s. Most appointments are scheduled within a few days, with dispatch coordinated from our Seattle office.
- Brier Road corridor
- 228th Street SW area
- Mountlake Terrace border zone
- Bothell border zone
- Wooded lots off 44th Avenue W
Service Area – Cities Near Brier
Brier sits at a crossroads in south Snohomish County, and our crews regularly work in surrounding communities. We also serve Seattle, WA, Spokane, WA, Tacoma, WA, and Vancouver, WA from our regional offices. Scheduling and dispatch for the Brier area are coordinated through our Seattle location.
Serving Brier, WA - Our Local Coverage Area
We’re based in the Brier 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 Brier
No. Because Brier is unincorporated Snohomish County, there is no city building department to require permits for duct cleaning or sealing. That makes it even more important to hire a crew that documents its work with before-and-after photos and written guarantees, since no inspector will verify the job for you.
We typically schedule Brier appointments within two to five business days, with dispatch from our Seattle office. We don’t promise same-day service because duct cleaning is a scheduled, in-home job that requires proper equipment loading and time allocation. Call (361) 326-5060 to check current availability.
We coordinate directly with homeowners, not through HOA management, since Brier’s subdivisions vary widely in their oversight. If your HOA requires proof of work or insurance documentation, we provide that in writing at the time of service. We’ve worked in subdivisions off Brier Road and along 228th Street SW where access and parking requirements differ, and we confirm those details when you call.
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 Brier Customers Say
"No sales pitch. Told me which parts of the system were fine and only cleaned what needed it."
- Ted L."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.




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