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 Duct Sealing Across Artondale
Artondale homeowners dealing with musty air, uneven heating, or allergy flare-ups every spring usually have the same problem: gaps in their ductwork pulling damp crawlspace air straight into the living space. A typical duct sealing job in Artondale runs $450 – $1,200 depending on system size and accessibility, and we schedule most work within a week. We also offer Artondale Dryer Vent Cleaning for homeowners who want their full ventilation system checked. Our dispatch team coordinates from the Seattle office, but our crews live and work in the Gig Harbor peninsula area, so we know the crawlspace flex-duct layouts common in Artondale’s 1970s ramblers and post-WWII single-story homes. Call (361) 326-5060 for a free estimate with a written price before any work starts.
Why Hollis Air Duct Cleaning Is Artondale’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our Duct Sealing in Artondale crews have handled enough peninsula crawlspaces to know what fails here. The marine air off Puget Sound, the dense second-growth Douglas fir and cedar forest surrounding the community, and the persistent damp in unconditioned crawlspaces create a specific set of problems that inland techs rarely see.
Our technicians are background-checked, uniformed, and trained to The Garrison Standard: arrive inside the quoted window, price the job in writing before touching equipment, complete the work by the book, and leave the site clean. Every duct sealing job carries our 365-Day Done Right Promise – if the seal fails or the musty smell returns within a year, we come back and make it right at no charge, including a free second visit.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues.
Duct Sealing Services in Artondale
Duct Sealing Services in Artondale focus on closing the gaps, seams, and joint failures that let conditioned air escape and unconditioned crawlspace air enter your home. Most Artondale homes built from the late 1940s through the 1990s use flex-duct runs routed through damp crawlspaces or unconditioned attics. Those ducts sag, separate at joints, and develop gaps where the vapor barrier tears – especially after years of rodent activity or condensation cycling. Our Duct Sealing team uses professional-grade mastic sealant and mechanical fastening, not consumer foil tape that peels in high humidity. Typical sealing jobs in Artondale run $450 – $900 for partial-system repairs and $800 – $1,200 for whole-home sealing with full access.
Source Removal Before Sealing
We do not seal over mold. Our process starts with rotary brush agitation using Rotobrush equipment and negative-air containment with Nikro machines to remove debris and microbial growth from the duct interior. Sealing a dirty duct traps moisture and spores inside. That’s not discipline; it’s malpractice.

Flex-Duct Joint Repair
Flex-duct connections at metal boots and plenums are the first failure point in Artondale’s humid crawlspaces. We replace failed zip ties with permanent clamps, seal with water-resistant mastic rated for damp conditions, and support sagging runs to prevent future separation.

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.
Duct Insulation in Artondale
Duct Insulation in Artondale addresses the condensation that forms on cold duct surfaces during the long wet season. Even perfectly sealed ducts will sweat if the insulation vapor barrier is compromised, and in Artondale’s climate that means mold regrowth within one heating season. Most insulation jobs run $600 – $1,400 depending on linear footage and whether we’re re-insulating crawlspace trunks, attic runs, or both. We use insulation products from Abatement Technologies and Guardsman with intact vapor barriers, properly sealed at seams – not the compressed, rodent-damaged fiberglass you’ll find in many peninsula crawlspaces.
Crawlspace Trunk Re-Insulation
The main supply trunk in your crawlspace loses the most energy and collects the most condensation. We remove water-damaged insulation, treat the metal for mold, and install new wrapped insulation with sealed seams. This stops the “rain” inside your crawlspace that Artondale homeowners smell when the furnace kicks on.
Attic Run Protection
Attic ductwork in Artondale’s older ramblers faces summer heat and winter moisture. We inspect for collapsed insulation and vapor-barrier tears, then re-insulate with products rated for the temperature swings of unconditioned attic spaces.
Trusted Brands We Service in Artondale
We stock parts and materials from Abatement Technologies, Guardsman, and Aprilaire for Artondale jobs, which means faster turnaround and no waiting on freight from Seattle warehouses. Our equipment roster includes Rotobrush rotary brush systems for source removal and Nikro negative-air machines for containment during mold remediation. These are the same tools commercial crews use on medical and institutional jobs, not hardware-store vacuums with brushes duct-taped to the hose. When your technician arrives, they’ll explain what each piece of equipment does and why we’re using it on your system.
Common Duct Sealing Problems We See in Artondale Homes
- Consumer foil tape failing in wet-season humidity. The silver tape sold at hardware stores loses adhesion in Artondale’s persistently damp crawlspaces, leaving seams open to condensation and mold regrowth within a single heating season. We see this on DIY repairs and cut-rate competitor jobs.
- Mold spores sealed inside rather than removed. A fogging “sanitizer” sprayed into dirty ducts leaves microbial growth in place. When we seal those ducts, we’re trapping moisture and food source together. Source removal first. Always.
- Sagging flex-duct resting against joists or soil. Artondale’s crawlspace-mounted flex ducting pulls away from supports over time, creating low points where condensation pools. We re-support and seal, but we also flag chronic moisture sources that will re-saturate the new work.
- Ignoring the crawlspace envelope. Sealing ducts without addressing the damp crawlspace itself is temporary. We inspect for standing water, foundation vents that should be closed, and vapor-barrier gaps – because cold duct surfaces will re-condense moisture all winter long.
Pricing for Duct Sealing in Artondale, WA
A typical partial duct sealing job in Artondale runs $450 – $900. Whole-home sealing with full crawlspace access runs $800 – $1,200. Duct insulation added to sealing work runs $600 – $1,400 depending on linear footage. These are whole-system prices, not per-vent teaser rates that balloon once the technician is inside your home.
What moves the price: system size, crawlspace accessibility, whether we need to remove and replace damaged flex-duct sections, and whether mold remediation is required before sealing. We inspect with a camera, write the price down, and get your approval before any work begins. The price does not move at the door. Estimates are free. Call (361) 326-5060 for an exact quote on your Artondale home.
We Also Serve Cities Near Artondale
Our crews work throughout the Puget Sound region, including Artondale, 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.
Serving Artondale, WA - Our Local Coverage Area
We’re based in the Artondale 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 Artondale
The combination of humidity and cedar pollen in Artondale’s crawlspaces creates ideal conditions for mold growth inside flex-duct interiors. When the first warm spring day hits and your furnace cycles on, that damp, musty air pushes straight into your living space. Source removal of the mold and proper sealing of the duct joints eliminates the smell permanently, not just for one season. Call (361) 326-5060 for a camera inspection.
After. Sealing before cleaning traps mold spores and moisture inside the duct, which guarantees regrowth. Our process removes the source first with rotary brush agitation and negative-air containment, then seals the cleaned system with mastic and mechanical fasteners. The 365-Day Done Right Promise covers both steps. Call (361) 326-5060 to schedule.
Yes, especially in Artondale’s housing stock. The flex-duct runs in these homes have had 40 – 50 years of humidity cycling, rodent activity, and joint separation. Sealing restores system efficiency and stops the crawlspace air infiltration that drives allergy symptoms and musty odors. Most Artondale homeowners see improved comfort and reduced HVAC runtime within the first billing cycle. Call (361) 326-5060 for a free estimate.
With roughly 40 inches of annual rainfall and persistently high humidity, Artondale crawlspaces stay damp for months. Cold duct surfaces in unconditioned spaces drop below the dew point, and condensation forms at joints and gaps. That moisture, combined with organic debris in the duct, feeds mold colonies that release spores into your air stream. Sealing eliminates the condensation points; source removal eliminates the existing growth. Call (361) 326-5060 for an inspection before the next wet season.
A legitimate quote includes camera inspection of the duct interior, source removal of debris and microbial growth if present, mechanical fastening of flex-duct connections, mastic sealant rated for damp conditions, support of sagging runs, and written documentation of what was sealed. It should also specify whether insulation replacement is recommended and what the total price covers. Our quotes include all of this, written down before work starts. Call (361) 326-5060 for a quote you can compare line by line.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Artondale since 2004 as part of the Garrison Partners family.




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