In Sammamish, houses stay closed up through long, wet winters, and the same indoor air cycles through the ductwork for months at a time. Whatever the system collects - dust, pollen, damp-season debris - the house keeps breathing it. We clean the system from the main trunk out and inspect it on camera.
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From a musty system after a closed-up winter to a heat-pump home adding a new run, these are the six duct services Sammamish homeowners book with us. Below is air duct in Sammamish, WA in full — every service, the local conditions and the areas covered.
Cleaning & Care
Air Duct Cleaning
Our negative-air machine seals onto the main trunk duct and puts the whole system under suction first. Then each run is scrubbed individually, so years of dust and debris travel one way only — out of the ducts and into the machine. For air duct cleaning in Sammamish, WA, one call books the visit and a local tech takes it from there.
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Cleaning & Care
Air Duct Inspection
In King County, a fall inspection catches the separated joints that would waste heated air through the whole wet winter. A camera goes inside your ductwork so you can see exactly what's in there — buildup, damage or blockages — before we recommend anything. Inspections are free. For air duct inspection in Sammamish, WA, one call books the visit and a local tech takes it from there.
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Repair
Air Duct Repair
Crushed, torn or disconnected ducts leak the air you pay to heat and cool. Crushed or fallen crawlspace runs get rebuilt with proper support and insulation, not just lifted back into place. We repair and rebuild damaged sections so airflow is strong and even again. It is why air duct repair in Sammamish, WA keeps getting recommended to neighbors.
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Install & Replace
Air Duct Installation
New duct runs for additions, remodels and system upgrades — sized, sealed and balanced so every room gets its share of heating and cooling. Returns get planned properly on every install - the undersized return is the classic older-home flaw here too. That is air duct installation in Sammamish, WA, done the way it should be.
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Repair
Air Duct Sealing
Leaky joints quietly waste a big share of your airflow. We seal seams and connections with professional mastic for a tighter, more efficient system. Around Sammamish, we replace failed tape with professional mastic at seams, boots and plenum connections. Air Duct Sealing in Sammamish, WA runs on one standard: done properly, checked, and shown to you before we leave.
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Cleaning & Care
Commercial Air Duct Cleaning
Offices, restaurants, retail and multi-unit buildings across Sammamish — scheduled commercial duct cleaning with the same negative-air machine sealed onto the trunk, keeping your space comfortable, compliant and breathing clean. In Sammamish, we schedule around business and school hours, so the work never costs you an open day. The crews behind commercial air duct cleaning in Sammamish, WA are the same ones who cover the ZIP codes listed below.
Get a free estimateNeed something else — a damper, a blower, a smoke problem, a bird in the flue? We cover all 27 air duct specialties. Call (888) 258-5005 and describe it.
A duct system in Sammamish works through wet winters in a sealed house, often from a damp crawlspace, and increasingly alongside a heat pump. This is what we actually find here, and what we check on every visit.
Most Sammamish homes run ductwork through a crawlspace that stays cool and damp most of the year. Insulation sags, joints sweat, and dust inside the runs sits in moisture. The musty smell at startup in these homes is a crawlspace story until proven otherwise.
Tree pollen arrives in Sammamish in a rush each spring - alder, birch and cedar in turn - and coats everything for weeks. Return ducts store the season's load, and allergy households keep breathing spring pollen from the system well into summer.
Wildfire smoke reaches the Sammamish area most summers now, and fine smoke particles penetrate closed homes and settle into duct dust. After the skies clear, the system keeps recirculating that residue at startup - a post-smoke cleaning is the fastest way to close the season out.
Where ducts run through the attic, blown insulation drifts against and over runs, straps loosen, and joints separate under the blanket where nobody sees them. Weak airflow to one end of the house is often an attic duct story, found on camera without disturbing the insulation.
Sammamish sits in King County, and the ZIP list at the bottom of this page covers 3 serviceable ZIP codes — 98029 through 98075. The closest served neighbors are Issaquah, Redmond, Bellevue, and every one of them is covered by the same crews, the same day, under the same number: (888) 258-5005.
Same-day service, free estimates, licensed & insured — and a air duct that lights when you click the remote.
Every few years for most Sammamish homes - sooner with pets, allergy sufferers, a heat pump running long fan hours or a home that sat closed through a smoky summer. We camera-inspect free and show you the inside of your own trunk, so the decision comes from what is actually in there.
Our negative-air machine seals onto the main trunk duct and puts the whole system under suction first. Then each individual run is scrubbed on its own, so loosened dust travels toward the trunk and into the machine - never back into your rooms. We finish at the registers and show you the before-and-after on camera.
Rooms that lag the thermostat, long heating cycles, dust returning days after cleaning and weak flow at far registers. Under Sammamish homes, separated crawlspace joints and unsealed returns are the standing findings, and mastic sealing is the lasting fix.
It is one of the better first looks you can take. The camera shows what years of wet winters, pets or remodels left inside the system across Sammamish, and you decide from the screen whether a cleaning belongs on the move-in list.
Yes - same-day service is available in Sammamish, along with free inspections and estimates before any work starts. We are licensed and insured, with 10+ years of experience and 100+ 5-star reviews. Call early in the day for the best chance of a same-day visit.
No — and be wary of anyone who does. Every duct system is a different size and condition, so a phone price is a guess that changes at your door. Our inspections and estimates are free: a tech looks inside your actual ductwork first, then gives you one clear price before any work starts.
Air Duct Service Co is a national company with local technicians serving Sammamish street addresses across the ZIP codes below — same-day service and free estimates, every day 8 AM – 8 PM. More of Washington is covered from our Washington page. The Sammamish list below covers 3 ZIP codes, 98029 through 98075.
Don't see your ZIP? Sammamish also uses P.O. Box and single-organization ZIP codes that have no street addresses — call (888) 258-5005 and we will confirm coverage for your street address on the call.
Also serving nearby: Issaquah, WA · Redmond, WA · Bellevue, WA · Carnation, WA · Newcastle, WA · Beaux Arts Village, WA.
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