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
After
Before
AfterFast, Reliable Air Duct Cleaning Across Mount Vista
Air duct cleaning in Mount Vista, WA typically runs $350 – $650 for a full residential system and most jobs are completed in a single visit. If your home was built in the late 1990s or 2000s, your flex-duct network is likely 15 – 25 years old and due for its first deep cleaning. Call (361) 326-5060 for a free written estimate before any work begins.
We serve Mount Vista from our Seattle office, and our crews know the area well. We’ve worked the tract homes off NE 99th Street, the subdivisions near the Salmon Creek greenway, and the newer construction pushing toward the Ridgefield junction. Mount Vista’s housing stock is specific: tightly sealed flexible-duct systems running through unconditioned attics and crawlspaces, installed during the building boom of 1998 – 2008. Those systems weren’t designed to handle the fine volcanic ash that still permeates local soil. That’s why our Air Duct Cleaning team carries Rotobrush rotary systems and Nikro negative-air machines on every truck, not hardware-store vacuums with a long hose.
The Garrison Standard governs how we operate here: arrive inside the quoted window, price in writing before touching equipment, complete the job by the book, and leave the site clean. Roy Castellanos built Hollis Air Duct Cleaning on that standard starting in 2004, and every Mount Vista job still carries the 365-Day Done Right Promise in writing.
Why Hollis Air Duct Cleaning Is Mount Vista’s Preferred Air Duct Cleaning Company
Mount Vista homeowners aren’t looking for the lowest coupon price. They’ve seen that movie: the van arrives, the technician finds “unexpected problems,” and the invoice doubles. We don’t play that game. The price is written down before we touch your system, and it does not move at the door.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. They follow The Garrison Code on every Mount Vista job: no shortcuts, no upsells invented at the kitchen table, no leaving until the work is documented and the site is clean. If something fails within a year, we come back and make it right at no charge. That’s the 365-Day Done Right Promise, and it’s on every invoice we write in Mount Vista.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday to schedule. Dispatch coordinates from our Seattle office, but the crew that arrives at your Mount Vista door is local, equipped, and accountable.
Air Duct Cleaning Services in Mount Vista
Air Duct Cleaning Services in Mount Vista focus on extracting abrasive volcanic grit from the entire duct network, not just wiping reachable registers. A typical residential full-system clean in Mount Vista runs $350 – $650 depending on system size, accessibility, and whether we find disconnected or crushed flex runs that need repair. Commercial systems start around $800 and scale with square footage and HVAC zoning.
Our process starts with a video inspection. We feed a camera through your supply and return lines to map the duct condition, locate disconnections, and identify where ash and condensation have formed those dark, airflow-killing clumps. Then we agitate the deposits with a Rotobrush rotary system and extract them under negative pressure using Nikro HEPA-filtered equipment. The result is measurable: we test airflow at your registers before and after, and we show you the footage.
Residential Duct Cleaning
Most Mount Vista homes we see were built between 1998 and 2008 with flexible ductwork in unconditioned spaces. After 15 – 25 years, the original duct tape has degraded, joints have loosened, and sections have been crushed by maintenance traffic in attics and crawlspaces. Our residential clean addresses the full supply and return network, including the air handler cabinet and blower assembly. We charge one flat price per system, agreed in writing before we start. No per-vent pricing, no add-ons at the door.
Commercial Duct Cleaning
Mount Vista’s commercial buildings, from medical offices near the 99th Street corridor to retail spaces along the main arterials, require scheduled cleaning that doesn’t disrupt business hours. We work evenings and weekends when needed, and we document compliance for property managers and facility directors. Our commercial crews use the same Rotobrush and Nikro equipment scaled to larger trunk lines and multiple zones.
What happens when you call
- 1
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 Mount Vista
HVAC Duct Cleaning in Mount Vista means addressing the interaction between your heating and cooling equipment and the duct network that distributes conditioned air. In this climate, wet winters create condensation on cold attic ducts, and that moisture binds with volcanic ash to form dense, sticky deposits that standard vacuuming won’t remove. A typical HVAC duct cleaning in Mount Vista runs $400 – $750 when it includes the air handler, coils, and blower assembly.
We don’t just clean the ducts and ignore the machine. Your blower motor works harder when return airflow is restricted by ash-clogged filters and duct deposits. Your evaporator coil transfers less efficiently when fine grit coats the fins. Our HVAC duct cleaning service treats the system as an integrated whole, because that’s how it actually operates in your Mount Vista home.
Supply and Return Line Cleaning
Supply ducts push conditioned air to your rooms. Return ducts pull air back through filters to be reconditioned. In Mount Vista, the return side is where we find the most volcanic ash accumulation, because that’s the suction path drawing air from crawlspaces and poorly sealed wall cavities. We clean both sides separately, seal any leaks we find, and verify that your filter is actually filtering, not bypassed around a disconnected joint.
Video Inspection and Documentation
Every full-system job includes before-and-after video. You see what we found: the crushed flex, the disconnected wye, the ash deposits clinging to duct walls. After cleaning, you see the difference. This isn’t for show. It’s how we prove the work was done, and it’s how you know whether your system needs sealing or repair beyond cleaning.
Trusted Brands We Service in Mount Vista
We clean and service duct systems connected to equipment from every major manufacturer, and we stock filtration products from Honeywell, Aprilaire, and Guardsman for Mount Vista customers who need replacement media after a deep clean. Many homeowners we meet in the NE 99th Street area and the Salmon Creek neighborhoods are running MERV 8 or MERV 11 filters that have been bypassing dirty air around crushed return ducts for years. A new filter only works when the duct network is intact. We carry the filtration brands that fit your existing housing, and we install them after sealing and cleaning so the MERV rating finally means something. Our Seattle office keeps common sizes in stock, so most Mount Vista customers get same-visit filter replacement without a second trip.
Common Air Duct Cleaning Problems We See in Mount Vista Homes
- Crushed or disconnected flex duct in attics and crawlspaces. The original 1990s – 2000s flexible ductwork in Mount Vista tract homes was never designed for foot traffic. Plumbers, cable installers, and even homeowners have flattened sections or pulled joints apart at wye connections. Ash-laden air bypasses the filter entirely and dumps straight into your crawlspace. We find this on camera, not by guesswork.
- Dark, sticky clumps from winter condensation binding volcanic ash. Mount Vista’s moist winters create cold-surface condensation inside attic ducts. That moisture turns fine ash and household dust into dense, tar-like deposits that wipe-down-only cleaners miss completely. Our Rotobrush agitation breaks these loose before negative-air extraction.
- Annual August ash influx from disturbed soil. The first dry, windy week of August brings predictable calls from Mount Vista homeowners near new construction. Exposed soil from grading and foundation work kicks up 1980 Mount St. Helens ash that gets drawn straight into return vents. Cleaning in spring doesn’t protect against this event.
- Blower motor strain from restricted return airflow. When ash and clumped deposits choke your return ducts, the blower works harder, draws more amperage, and fails prematurely. We measure static pressure before and after cleaning to document the improvement. The number doesn’t lie.
Pricing for Air Duct Cleaning in Mount Vista, WA
Here’s what air duct cleaning actually costs in Mount Vista:
| Service | Typical Range |
|---|---|
| Residential full-system cleaning (supply + return, no repairs) | $350 – $650 |
| Residential with air handler, coils, and blower | $400 – $750 |
| Commercial duct cleaning (per system, varies by square footage) | $800 – $2,500 |
| Duct sealing with mastic (when needed, per linear foot) | $8 – $15 |
| Flex duct section replacement (crushed or disconnected runs) | $150 – $400 per section |
| Video inspection only | $125 – $175 |
What moves the price: system size, number of zones, accessibility of attic and crawlspace runs, and whether we find damage requiring repair or sealing. We don’t quote per-vent. One flat price per system, written down before work starts, guaranteed not to change at the door. Call (361) 326-5060 for a free estimate. We’ll ask about your home’s age, square footage, and any symptoms you’ve noticed, then give you a range you can plan around.
We Also Serve Cities Near Mount Vista
Our crews travel throughout the region for scheduled commercial work and residential jobs in Mount Vista, Seattle, Spokane, Tacoma, and Vancouver. Each location operates independently under The Garrison Standard, with the same written pricing, background-checked technicians, and 365-Day Done Right Promise. If you’re outside Mount Vista city limits but within our service radius, the same rules apply: price in writing before work starts, no surprises, and documentation you can keep.
Serving Mount Vista, WA - Our Local Coverage Area
We’re based in the Mount Vista 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 Mount Vista
Calls spike because dry, windy conditions in the first week of August kick up fine 1980 Mount St. Helens ash from exposed soil around new construction sites and landscaping projects. That ash gets drawn into return vents and accumulates in blower motors and filters. Homeowners who cleaned in spring often need another service by late summer. Call (361) 326-5060 to schedule before the August rush, or after if you’re already hearing blower strain.
Yes, if it has never been done. A 2003 Mount Vista home has flexible ductwork that is now 20-plus years old. The original duct tape has degraded, joints have loosened, and the system has been drawing volcanic ash through return lines since the day it started. We regularly find 2003-era homes with disconnected returns dumping ash-laden air into crawlspaces, not through filters. A deep clean with video inspection reveals what two decades of accumulation looks like in your specific system.
Mount St. Helens tephra is fine, abrasive volcanic glass and mineral particles, not organic household dust. It’s grittier than typical lint or skin-cell debris, and it doesn’t break down or biodegrade. In Mount Vista’s moist climate, it binds with condensation into dense clumps that adhere to duct walls. Ordinary vacuuming or register wiping won’t remove it. Our Rotobrush agitation and Nikro negative-air extraction are specifically designed to dislodge and capture this type of persistent abrasive deposit.
We do both, and sealing is often the more important service. Cleaning removes existing deposits, but sealing with mastic prevents new ash-laden air from bypassing your filter through leaks in return ductwork. During every full-system job, we inspect joints and connections. If we find disconnections or gaps, we quote sealing work at $8 – $15 per linear foot, in writing, before starting. A clean duct with a 3-inch gap at a wye fitting is still a dirty system.
Cleaning restores airflow so your filter can actually function, but the MERV rating only matters if air is passing through the filter media, not around it. In Mount Vista homes, we often find return duct leaks that bypass the filter entirely. We clean the deposits, seal the leaks, then install a properly sized Honeywell, Aprilaire, or Guardsman filter that matches your system’s capacity. The MERV rating finally works when the ductwork is intact and the airflow is restored. Call (361) 326-5060 and we’ll test your static pressure to show you the difference.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Mount Vista since 2004.