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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AfterFast, Reliable Air Duct Cleaning Across Seattle
Air duct cleaning in Seattle typically runs $450 – $900 for a full single-family home system, and the real issue here isn’t just dust, it’s what the damp crawl-space air leaves behind inside your ducts. Most Seattle homes sit over vented, unencapsulated crawl spaces, which means the ductwork running through them pulls moisture and biological growth into the air you breathe every time the furnace cycles on. Linden Air Duct Cleaning has worked Seattle’s older housing stock long enough to know exactly where those problems hide. If you’re in Wallingford, Capitol Hill, West Seattle, or Ballard and you’ve noticed a musty smell when the heat kicks on, call us at (980) 447-2498 for a straight answer and a written price before any work begins.
Key Takeaways:
- Full-system Air Duct Cleaning in Seattle runs roughly $450 – $900 depending on home size, number of systems, and crawl-space access.
- Seattle’s damp marine climate means biological growth, not dust, is the primary reason ducts need cleaning here.
- Every job gets a written price before work starts, and a 365-Day Done Right Promise in writing.
- Your technician’s name and photo arrive before the visit, and a photo ID badge is shown at your door.
Why Linden Air Duct Cleaning Is Seattle’s Preferred Air Duct Cleaning Company
Homeowners in Seattle call us because we treat duct cleaning as what it actually is here: biological source removal, not a dust-and-done job. The Threshold Standard is the reason for that. Every tech who comes to your door is background-checked, identity-verified, and arrives in a clean, marked uniform. We send you their name and photo before they show up, and they hand you a photo ID badge at the door. No guessing who’s walking into your home.
We’ve been part of the Threshold Group family since 2004, led by Marcus Veale. Our Seattle customers stay with us because the price we quote is the price you pay, in writing, every time. Our 365-Day Done Right Promise means if the work isn’t right, we make it right. Not a vague assurance. A written commitment on every job.
Seattle’s older homes, the retrofitted Craftsman bungalows in Columbia City and Beacon Hill, the mid-century ranches across Rainier Valley, all have ductwork that behaves differently from newer construction. We know those systems. We know what a 1970s retrofit trunk line looks like when it’s been pulling crawl-space air for forty years. When damage goes beyond what cleaning can fix, we also provide our Air Duct Repair in Seattle. Experience with exactly these houses is the difference between a cleaning that lasts and one that just moves debris around.
Vent Cleaning in Seattle
Vent cleaning in Seattle means pulling the accumulated material out of your supply and return registers, branch runs, and the plenum connections, then sealing what was never sealed. A typical single-family vent cleaning here runs $300 – $550 depending on the number of registers and the condition of the runs. In Seattle’s older housing, that condition is usually worse than the homeowner expects.
Supply and Return Vent Cleaning
Your supply vents push conditioned air into the rooms. Your return vents pull room air back to the furnace. In a retrofitted Seattle home, both sets of runs often pass through the same damp crawl space, and both pick up whatever is growing down there. We clean both sides of the system, not just the vents you can see on the floor.
Register and Boot Cleaning
Floor registers in older Seattle homes collect a gluey mix of dust, pet hair, and condensation that cakes onto the boot, the metal box beneath the register. We manual-agitate those boots and extract the sludge with negative-pressure equipment rather than just wiping the surface. That’s the difference between clean-looking vents and clean vents.
Ductwork Cleaning in Seattle
Ductwork cleaning in Seattle is the part of the job that separates real source removal from a blow-and-go. It means cleaning the trunk lines, branch runs, and plenum the full length of the system, not just the first few feet you can reach from a register. For a typical Seattle single-family home, full ductwork cleaning runs $450 – $900, with larger multi-system houses running higher.
Full System Negative-Pressure Cleaning
Our crews set up a negative-pressure extraction system at the air handler, then use Rotobrush or Nikro agitation tools to break material loose from the duct walls while the vacuum pulls it out of the house. HEPA filtration runs at the point of extraction. Nothing gets blown back into your living room, and nothing gets deposited in the crawl space.
Post-Cleaning Sealing at Critical Connections
A duct cleaning in Seattle isn’t finished until the obvious leaks are sealed. We seal the connections at the plenum, at each register boot, and wherever a run passes through the crawl space floor. That’s what stops the damp, mold-laden crawl-space air from being pulled right back into the system the week after we leave.
Trusted Brands We Service in Seattle
We run professional-grade equipment from Rotobrush and Nikro, and we install air-quality components from Honeywell and Guardsman when a Seattle home needs filtration or source-control help beyond the cleaning itself. For homeowners with Carrier systems, we also offer Carrier service in Seattle. We maintain a full stock of commonly needed replacement parts for the systems we service in Seattle, which means if your Aprilaire media cabinet or a section of damaged flex duct needs replacement during the job, we usually have what’s needed on the truck. No waiting on a parts shipment from a distributor two states away.
Common Air Duct Cleaning Problems We See in Seattle Homes
- Biological growth from vented crawl spaces. This is the dominant issue in Seattle, and it’s why duct cleaning here is closer to mold remediation than routine maintenance. Most of the city’s homes sit over unencapsulated, vented crawl spaces, and any unsealed duct connection down there pulls that damp air directly into the living space.
- Shared dryer vent stacks in condos and apartments. In Seattle’s multi-unit buildings, the dryer vent often runs up through a shared chase, which means lint accumulates along the entire run, not just at the trap. Cleaning only your unit’s section leaves the shared pathway untouched, and we schedule stack runs with building management to address the full pathway.
- Smoke-season particulate loading. During August and September wildfire smoke events, Seattle residents seal their homes and run HVAC systems constantly. That loads duct interiors with fine particulate that then sits through the damp winter. A system cleaned before smoke season is dirty again by January.
- Retrofit systems with unsealed connections. Technicians working homes in Fremont, Wallingford, and Beacon Hill regularly find forced-air systems that were bolted onto houses originally built for radiant or gravity heat in the 1970s. Those improvised connections were never sealed properly and have spent decades pulling crawl-space air into bedrooms.
Pricing for Air Duct Cleaning in Seattle, WA
Full-system air duct cleaning for a typical Seattle single-family home runs $450 – $900. Vent-only cleaning runs $300 – $550. What moves the number: the square footage of the home, the number of supply and return runs, whether there are multiple systems or zones, and how accessible the crawl space is. A tight crawl space in an old Wallingford craftsman takes longer than a tall one in a newer North Seattle build. We give you the written price before any work begins, every time, and we do not add per-vent charges or surprise line items at the end. Call (980) 447-2498 for a free estimate on your Seattle home.
Note on pricing: these ranges reflect what we’re seeing across Seattle in 2026. If a quote comes in dramatically lower, ask what’s included. A $199 “whole house” special usually isn’t cleaning the trunk line, the plenum, or anything below the registers.
We Also Serve Cities Near Seattle
Linden Air Duct Cleaning serves homeowners throughout the Seattle metro. In addition to our Seattle work, our crews regularly handle Air Duct Cleaning jobs in Medina, Bellevue, Mercer Island, and Kirkland. Each of those cities has its own housing stock and its own set of common duct problems, and we know them well enough to quote accurately over the phone before we ever pull up to the house.
Serving Seattle, WA - Our Local Coverage Area
We’re based in the Seattle 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 Seattle
Seattle ducts get moldy because the air inside them comes from vented, unencapsulated crawl spaces that stay damp year-round. Phoenix ducts sit in dry, hot air and collect dust. Seattle ducts pull moisture through unsealed connections, and that moisture supports biological growth that a dry-climate technician never sees. This is why our Seattle jobs are built around source removal and sealing, not just vacuuming. Call (980) 447-2498 and we’ll tell you what we’re likely to find in your specific crawl space.
We can clean the portion of the stack that serves your unit, but the honest answer is that a partial cleaning leaves the shared pathway still loaded with lint from the other units. The right approach is to coordinate with your building management to clean the full stack. In Seattle condo buildings, we schedule these runs through the building manager and provide a written report for the HOA. Call (980) 447-2498 and we’ll walk you through how to set that up in your building.
On an older Seattle house, duct cleaning means negative-pressure extraction at the air handler, mechanical agitation of the trunk line and branch runs, cleaning the plenum, then sealing the connections that were never sealed in the first place. The first step is usually a camera inspection to see what we’re working with, because retrofitted systems in neighborhoods like Wallingford and Capitol Hill rarely match the original plans. Call (980) 447-2498 to schedule an inspection, and we’ll tell you exactly what your system needs.
They do, and here’s the pattern we see in Seattle every year. During smoke events, homeowners seal the house and run the HVAC continuously. That loads the ducts with fine particulate. Then the damp season starts, and that particulate gets glued to the duct walls by condensation. If you’re thinking about scheduling, the ideal window is after the worst of the smoke but before the winter heating season truly ramps up. October and November are the busiest months for us in Seattle for exactly this reason. Call (980) 447-2498 and we’ll get you on the schedule.
You don’t know for certain until someone looks. But here’s the common tell in Seattle: the smell gets worse when the furnace kicks on, and it’s strongest right at the registers. That points to the ductwork, not the carpet or the bathroom fan. A homeowner in Wallingford called us about a musty smell that got worse every time the heat cycled. Our tech ran a camera inspection and found a 1970s retrofit trunk line unsealed and sitting open in a wet, vented crawl space, colonized with biological growth. We set up negative pressure at the air handler with HEPA filtration, used agitation tools to do source removal on the supply and return ducts, and sealed the connections at the plenum, registers, and crawl-space penetrations. The smell cleared at the next heating cycle, and they finally stopped replacing filters every three weeks. That’s what we do in Seattle every week. Call (980) 447-2498 and we’ll come look.
Contact Linden Air Duct Cleaning in Seattle
If your ducts haven’t been cleaned in years, or you’re noticing a musty smell when the heat runs, or the last two smoke seasons have left you wondering what’s coating the inside of your system, call us. A live person answers the phone 24 hours a day, 7 days a week. We’ll talk through what you’re experiencing, give you honest pricing, and send a technician whose name and photo you already have, who shows a photo ID badge at the door, and who leaves you with a written price and a written guarantee.
Call Linden Air Duct Cleaning at (980) 447-2498 for a free estimate on air duct cleaning in Seattle, WA.
Written by Marcus Veale, Owner at Linden Air Duct Cleaning, serving Seattle and the surrounding metro area since 2004.