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 Duct Sealing Across Arlington
We’re the crew that shows up to Arlington homes when the bedroom register barely moves air and the utility bill keeps climbing. Our dispatch team coordinates from our Seattle office, but our technicians live and work in the Arlington area, so we know the difference between a 1965 ranch off Burke Avenue and a 1989 split-level near Bryant Elementary. That local knowledge matters because Arlington’s housing stock carries specific duct problems you won’t find in newer suburbs. If your system is leaking conditioned air into the attic or pulling fiberglass flakes through the vents, we’ll find it, price it in writing, and handle your Duct Sealing - Arlington by the book. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Arlington’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our Arlington customers know what that means: written prices, written guarantees, and technicians who arrive uniformed and background-checked. The 365-Day Done Right Promise covers every duct sealing job we do in Arlington, if the seal fails or the leak returns within a year, we come back at no charge, including a free second visit. Our phones are answered by a live person 24 hours a day, seven days a week, so you’re not waiting through a callback queue when your system is pumping attic air into the living room. We serve Arlington and the surrounding communities with the same equipment commercial crews use: Rotobrush rotary systems, Nikro negative-air machines, and sealing products from Abatement Technologies and Guardsman.
Air Duct Sealing in Arlington
Air Duct Sealing in Arlington is the repair work that happens after we find where your conditioned air is escaping into the attic, crawlspace, or wall cavities. Most Arlington homeowners call us after noticing hot rooms, dusty vents, or utility bills that spike every July when the AC runs constantly. A typical Air Duct Sealing job in Arlington runs $450 – $1,200 depending on how many runs need attention, whether we’re reconnecting crushed flex duct, or sealing original metal trunk lines behind drywall chases.
What We Seal and Why It Fails
We start with a camera inspection of the full duct system. In Arlington’s 1960s – 1980s ranches, we regularly find flex duct inner liners that have cooked to flakes from years above 140°F attic heat. Sealing material won’t bond to degraded liner, so we remove the damaged section, reconnect the run, and seal the joint with mastic rated for high-temperature applications.
The Pressure Test That Proves the Fix
After sealing, we run a blower-door-style pressure check to verify air is moving at the register, not leaking into the attic. We show you the before-and-after readings. No guesswork, no “trust us, it’s better now.”
Duct Sealing Services in Arlington
Duct Sealing Services in Arlington cover the full range of repairs needed when your HVAC system is losing efficiency through gaps, disconnected runs, or degraded materials. This isn’t a surface cleaning, it’s structural repair work inside the duct system itself. Most Arlington homes need our Duct Sealing Services after years of flex duct deterioration, rodent damage in crawlspaces, or original installation shortcuts that left seams unsealed behind walls. A typical Duct Sealing Services job in Arlington runs $450 – $1,200, with larger systems or extensive reconnection work reaching $1,500 – $2,200. Our Duct Sealing team prices every job in writing before any work begins.
Reconnecting Crushed and Disconnected Runs
Flex duct crushed against roof trusses or chewed through by rodents can’t be sealed with tape alone. We physically reconnect or replace the damaged section, then seal the joint with mastic and mechanical fasteners that hold under Arlington’s attic temperature swings.
Sealing Hidden Trunk Line Leaks
Original duct board and metal trunk lines in Arlington’s older homes often have unsealed seams hidden behind drywall chases. We access these with minimal intrusion, seal the seams with UL-181 rated mastic, and verify the fix with pressure testing.
What happens when you call
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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.
Trusted Brands We Service in Arlington
We stock sealing materials and filtration products from Abatement Technologies, Guardsman, and Carrier in Arlington, so customers aren’t waiting on parts shipments when their system is leaking air. Our Abatement Technologies mastic and sealing tapes are rated for the temperature extremes we see in Arlington attics, not the milder conditions these products face in other markets. Guardsman filtration products let us add HEPA protection during the sealing process, so disturbed debris doesn’t circulate through your home while we’re working. When we need rotary brush access for pre-seal cleaning, we run Rotobrush equipment with HEPA containment. Fast turnaround matters in Arlington’s summer heat, and keeping common parts on our vans means most jobs finish in a single visit.
Common Duct Sealing Problems We See in Arlington Homes
- Heat-cooked flex duct liners. Arlington’s uninsulated attic flex duct regularly sees summer temperatures above 140°F, which degrades the inner liner into fiber-shedding flakes. This failure mode is far less common in cooler, drier Metroplex neighborhoods, and it’s why many Arlington homes need sealing rather than another cleaning.
- Rodent-damaged connections. Older ranch crawlspaces and attics in Arlington attract rodent activity that chews through duct insulation and disconnects runs from the air handler. Sealant alone can’t bridge a physically separated duct, we reconnect first, then seal.
- Crushed runs against framing. Poor original installation in 1970s Arlington ranches often routed flex duct across roof trusses or through tight wall chases where it eventually crushes flat. We reroute or replace these sections and seal the new connections.
- Unsealed original trunk seams. Duct board and metal trunk lines from the 1960s – 70s frequently have factory seams that were never sealed, or seals that have dried and cracked over fifty years. These hidden leaks can exceed the total loss from all visible flex runs combined.
Pricing for Duct Sealing in Arlington, WA
A typical duct sealing job in Arlington runs $450 – $1,200 for most single-family homes, with whole-system work on larger or older properties reaching $1,500 – $2,200. What moves the price: how many duct runs need attention, whether we’re reconnecting physically damaged sections or just sealing intact joints, and whether hidden trunk line leaks require access behind drywall chases. We do not quote per-vent teaser prices that balloon once we’re inside your home. The price is written down before any work starts, and it does not move at the door. Every Arlington job includes the 365-Day Done Right Promise, if the seal fails within a year, we return and make it right at no charge. Call (361) 326-5060 for a free estimate with exact pricing for your system.
We Also Serve Cities Near Arlington
Our crews work throughout Snohomish County and beyond, including Duct Sealing in Arlington as well as Marysville, Granite Falls, Lake Stevens, and Stanwood. Each community has its own housing stock and duct challenges, from Marysville’s newer construction to Granite Falls’ mountain-valley temperature swings. We bring the same written pricing, background-checked technicians, and 365-Day Done Right Promise to every job.
Serving Arlington, WA - Our Local Coverage Area
We’re based in the Arlington 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 Duct Sealing in Arlington
Arlington’s 1960s – 1980s ranches outnumber newer construction, and their uninsulated attic flex duct regularly sees summer temperatures above 140°F, which cooks the inner liner into fiber-shedding flakes. This heat damage is far less common in newer suburbs with insulated attics and updated duct materials. Call (361) 326-5060 for a free Dryer Vent Cleaning in Arlington inspection if you’re seeing dust or fibers from your vents.
No, sealant alone cannot bridge a physically crushed or disconnected duct run. We first reconnect or replace the damaged section, then seal the joints with mastic and mechanical fasteners rated for Arlington’s attic temperatures. The full repair is priced in writing before we start. Call (361) 326-5060 to schedule an inspection.
High spring pollen from oak, grass, and ragweed invades compromised duct joints and loose registers, so we always clean and remove allergen buildup before sealing. Sealing over trapped pollen just locks allergens behind the seal where they continue circulating. We use HEPA filtration and negative pressure during the process to protect your indoor air quality. Call (361) 326-5060 to schedule before peak pollen season.
Persistent hot or cold rooms, visible dust or fiberglass flakes from vents, utility bills that spike in summer, and rooms that never reach thermostat temperature all point to leaks that cleaning cannot fix. If you’ve already had a duct cleaning and the problem returned, the ducts are likely leaking, not just dirty. Call (361) 326-5060 for a camera inspection that shows exactly where the air is escaping.
Yes, every duct sealing job in Arlington uses HEPA filtration and negative-air containment to prevent disturbed debris from circulating through your home while we work. Our Nikro negative-air machines maintain containment throughout the sealing process. This is standard on every Hollis job, not an upsell. Call (361) 326-5060 to schedule.
On a 1972 ranch off Burke Avenue in Arlington, our tech camera-inspected the supply and return ducts and found the flex run to the back bedroom had crushed against a roof truss, with the inner liner flaking from years of 140°F attic heat. We set up negative pressure with a Rotobrush and HEPA filtration to remove the debris, then sealed the torn liner and reconnected the run at the air handler. Post-job blower-door-style pressure check showed the bedroom register finally moving air like it should.
Arlington’s 1960s – 1980s ranches outnumber newer construction, and their uninsulated attic flex duct regularly sees summer temperatures above 140°F, which cooks the duct’s inner liner into fiber-shedding flakes, a failure mode far less common in the cooler, drier neighborhoods of the surrounding Metroplex. This heat-damaged liner, not surface dust, is the real reason so many Arlington homes need duct sealing rather than a second cleaning. When we find this condition, we explain exactly what we’re seeing, show you the camera footage, and price the repair in writing before any sealant gets opened.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Arlington and the surrounding communities.