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.
Fast, Reliable Air Duct Cleaning Across Washougal
Air duct cleaning in Washougal typically runs $350 – $650 for a full residential system, with most jobs scheduled within a few days and completed in a single visit. We’re Hollis Air Duct Cleaning, and our crews serve Washougal from our Seattle-area dispatch office, carrying Rotobrush rotary systems and Nikro negative-air machines up the SR-14 corridor to handle the specific grit load this Gorge town throws at HVAC systems. Call us at (361) 326-5060 for a written estimate before any work starts.
Washougal isn’t Vancouver. The east winds that tear through the Columbia River Gorge carry fine silt and volcanic ash from the eastern Columbia Basin straight into your cold-air returns, especially on west-facing walls of hilltop homes. Our technicians know the difference between normal household dust and that gray-brown Gorge grit. We’ve cleaned ducts in the older mill-era homes near downtown, in the dense apartment buildings along the river, and in the newer subdivisions climbing the hills above SR-14. Each building type presents its own access challenges and its own ductwork quirks, and we price accordingly, in writing, before we touch anything.
Why Hollis Air Duct Cleaning Is Washougal’s Preferred Air Duct Cleaning Company
We’ve been doing this since 2004 as part of the Garrison Partners family, and our standard hasn’t changed: arrive inside the window, price it in writing, do it by the book, leave the site clean. That discipline matters more in Washougal than in most markets because the housing stock here is genuinely mixed. Older homes near the river often have retrofitted duct systems that don’t match original blueprints. Newer hilltop builds use builder-grade flex duct that kinks at fittings and traps Gorge-blown particulate where rigid metal wouldn’t.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. Phones are answered by a live person 24 hours a day, seven days a week. No voicemail loops, no callback queues, no waiting until Monday to schedule.
The 365-Day Done Right Promise covers every job we do in Washougal. If the work fails within a year, we come back and make it right at no charge, including a free second visit. That’s written down, not implied.
We don’t compete on teaser prices. We compete on the price you can trust, the one that doesn’t move when the technician is standing in your hallway.
HVAC Duct Cleaning in Washougal
HVAC Duct Cleaning in Washougal means source removal of the Gorge-driven silt, pollen, and ash that accumulates in supply and return runs through hard seasonal cycling. Because Washougal sees some of the most extreme temperature swings in the Portland metro, hot dry east winds in summer and ice-storm cold in winter, your system runs harder and more often than equivalent systems in milder parts of Clark County. That cycling pulls particulate deep into the ductwork, past the filter, past the register, into the trunk lines where only professional agitation and negative pressure can reach it.
A typical residential HVAC duct cleaning in Washougal runs $350 – $550 for a standard single-system home. Larger homes, multiple zones, or systems with significant contamination push toward $650. Commercial systems start around $800 and scale with square footage and access complexity.
Supply and Return Cleaning
Supply ducts push conditioned air into your rooms. Return ducts pull air back to the handler. In Washougal, returns on west-facing walls collect the heaviest Gorge grit load. We clean both sides of the system because dirty returns recontaminate clean supplies the moment the blower cycles on.
Full System Cleaning with Video Inspection
We run a camera through the trunk lines after agitation and extraction so you see what came out and what condition the duct is in. This matters particularly in Washougal’s older mill homes where ductwork may have been modified multiple times without documentation.
Vent Cleaning in Washougal
Vent Cleaning in Washougal covers the registers, grilles, and individual branch lines that connect rooms to the main trunk. In dense multifamily buildings near downtown Washougal, this work takes on added complexity because a single dryer vent stack may serve multiple units, and one lint-clogged run affects every dryer in the building. Our crew worked a dense apartment building near downtown Washougal where the shared 4-inch dryer vent stack was clogged with lint from multiple units. We isolated the run, used negative pressure with HEPA filtration, and ran a Rotobrush agitation tool through the duct. After source removal, lint buildup was cleared and every unit’s dryer vented freely.
Residential vent cleaning in Washougal typically runs $150 – $300 as a standalone service, or $100 – $200 when bundled with full HVAC duct cleaning. Dryer vent cleaning for single-family homes runs $125 – $225. Multifamily shared-stack jobs require on-site assessment because access and isolation complexity vary significantly.
Dryer Vent Stack Service
Shared stacks in downtown Washougal multifamily buildings need isolation before cleaning. We seal individual unit connections, establish negative pressure at the main exhaust point, and extract lint without pushing debris into neighboring runs. This requires equipment most hardware-store rentals can’t match.
Register and Grille Detailing
Registers trap the visible dust. We remove, clean, and reinstall them, checking for proper airflow direction and sealing gaps that bypass the filter. In Washougal’s newer subdivisions, we often find builder-grade registers that don’t seat properly against flex duct, creating dust leakage points.
Trusted Brands We Service in Washougal
Our equipment roster includes Rotobrush rotary brush systems for mechanical agitation, Nikro negative-air machines for controlled extraction, and filtration products from Honeywell, Aprilaire, and Guardsman. We don’t use hardware-store shop vacs and call it duct cleaning. The Rotobrush system loosens adhered debris from duct walls while the Nikro unit maintains negative pressure, preventing recontamination of your living space during the job. For homes with Aprilaire or Honeywell whole-house filtration, we inspect those units during the cleaning cycle and can recommend filter upgrades if the Gorge grit load is overwhelming standard media. Parts and compatible filtration media are stocked for Washougal customers, so follow-up work doesn’t wait on shipping.
Common Air Duct Cleaning Problems We See in Washougal Homes
- Shared dryer vent stacks in downtown multifamily buildings. One lint-clogged run restricts airflow for every unit on the stack. Ignoring this creates fire risk and forces dryers to run longer cycles, spiking utility bills for all connected residents.
- Builder-grade flex duct kinking at fittings in hilltop subdivisions. The SR-14 corridor developments used cost-optimized flex runs that collapse at tight bends, trapping volcanic silt where rigid metal would maintain airflow. Cleaning without addressing the kink leaves grit lodged and restricts airflow permanently.
- Inadequate negative pressure on tight flex duct runs. Some operators use insufficient vacuum strength, especially on long flex runs in newer Washougal homes. Debris agitates but doesn’t extract, settling deeper into the system after the crew leaves.
- Restricted parking and equipment access in dense neighborhoods. Downtown Washougal streets and older apartment lots don’t always accommodate large service vehicles. Crews that don’t plan for this arrive unprepared, run hoses insufficient lengths, and complete partial jobs.
Pricing for Air Duct Cleaning in Washougal, WA
Here’s what air duct cleaning costs in Washougal’s market, based on the jobs we’ve priced and completed:
- Residential full-system HVAC duct cleaning: $350 – $550 (standard single-system home)
- Large home or multi-zone residential system: $500 – $650
- Commercial duct cleaning: $800 and up, scaled to square footage
- Vent cleaning (standalone): $150 – $300
- Vent cleaning (bundled with full system): $100 – $200
- Dryer vent cleaning (single-family): $125 – $225
- Dryer vent stack cleaning (multifamily, per assessment): $200 – $400
- Video inspection add-on: $75 – $125
What moves the price: system size, number of registers, contamination level, access difficulty, and whether we’re dealing with rigid metal duct or the builder-grade flex common in Washougal’s newer subdivisions. We don’t quote per-vent. We quote one flat price per system, agreed in writing before work starts. That price does not move at the door. Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Washougal
Our crews regularly work Air Duct Cleaning in Washougal and the surrounding Clark County area, including Camas, Battle Ground, Vancouver, and Ridgefield. Each market has its own housing stock and contamination profile. Camas shares some of Washougal’s Gorge exposure but with different wind patterns. Vancouver’s denser urban core presents its own access challenges. Wherever you are in the county, we apply the same standard: written price, written guarantee, work done by the book.
Serving Washougal, WA - Our Local Coverage Area
We’re based in the Washougal 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 Washougal
Washougal sits directly in the Columbia River Gorge, where near-constant east winds funnel fine silt and volcanic ash from the eastern Columbia Basin into homes. Vancouver, just two miles west, doesn’t see the same particulate load because the Gorge wind pattern dissipates across the urban plain. Your filters and ducts work harder here because the contamination source is geographic and persistent, not just seasonal pollen or normal household dust. Call (361) 326-5060 and we’ll assess your system’s filtration against the actual grit load it’s handling.
We isolate the shared run at connection points, establish negative pressure at the main exhaust, and use mechanical agitation with HEPA-contained extraction. This prevents pushing lint into neighboring units or releasing particulate into common hallways. The process requires professional-grade equipment and specific sequencing that hardware-store rentals can’t replicate. Multifamily stack cleaning runs $200 – $400 depending on access and unit count. Call (361) 326-5060 for a specific assessment of your building.
We confirm access and parking arrangements when we schedule, and our technicians arrive with hose lengths and equipment configurations matched to the job site. In downtown Washougal’s denser neighborhoods, this may mean smaller-footprint extraction units and longer flex hose runs. The work standard doesn’t change: full agitation, full extraction, video verification where requested, site left clean. Pricing reflects the job, not the parking difficulty. Call (361) 326-5060 to discuss access at your specific address.
Yes, with adjusted technique. Flex duct kinks at tight fittings and tears if over-agitated. We use lower-RPM rotary tools and controlled negative pressure to avoid damaging the material while still extracting the Gorge grit that collects at those kink points. We also document any duct damage we find so you can address it before it becomes an airflow restriction. Full-system cleaning for homes with extensive flex duct runs typically falls in the $350 – $550 range. Call (361) 326-5060 for an exact quote.
The Gorge wind deposits a distinctive gray-brown volcanic silt and fine ash that differs chemically and physically from normal household dust. It’s more abrasive, more uniform in particle size, and tends to pack densely in return ductwork, especially on west-facing walls. Our technicians working Washougal regularly pull this material out of cold-air returns in quantities and colors that Vancouver crews rarely see two miles west. The debris type affects our agitation approach and your filtration needs. Call (361) 326-5060 and we’ll show you what your system is holding.
Ready to get your Washougal home’s ductwork cleaned right? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free estimate. We’ll give you a written price before any work starts, and every job is backed by our 365-Day Done Right Promise. If it’s not done right, we make it right, including a free second visit. That’s The Garrison Standard. That’s how we work.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Washougal and the greater Clark County area.




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