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 Edmonds
Duct sealing in Edmonds typically runs $450 – $1,200 for a whole-home seal depending on system size and accessibility, and our crew can usually assess and price the job within 48 hours of your call. We’re the Duct Sealing team that serves Edmonds from our Seattle coordination office, with technicians who know the difference between a bluff home facing Puget Sound and a rambler up in Perrinville. Call (361) 326-5060 for a free written estimate.
Edmonds homeowners call us because they have been burned before: a low quote that doubled once the van was in the driveway, or a crew that sealed ducts without checking whether the crawlspace was still damp from the last storm. We don’t work that way. The price is written down before we touch anything. Our background-checked, uniformed technicians arrive inside the quoted window, and every job carries our 365-Day Done Right Promise in writing.
Why Hollis Air Duct Cleaning Is Edmonds’s Preferred Duct Sealing Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our Edmonds reputation is built on showing up and doing what we said we’d do. Homeowners in the Bowl and along the bluff know our trucks because we’ve handled the specific misery of salt-corroded, flood-swollen ductwork that Edmonds’s marine climate creates.
Our phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues. When you call (361) 326-5060, you talk to a human who can schedule an Edmonds appointment and give you a real arrival window.
Dispatch and scheduling are coordinated from our Seattle office, but the crew that pulls up to your Edmonds home is local, uniformed, and background-checked. They carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, and they know how to document moisture and corrosion so your insurer pays the first time.
Duct Repair in Edmonds
Duct Repair in Edmonds often starts with damage most inland cities never see: salt-laden marine air corroding flex-duct collars, storm water swelling insulation jackets, and pollen from the Douglas fir canopy clogging returns in homes built as floor-furnace ramblers then retrofitted with flex. A typical duct repair in Edmonds runs $280 – $650 for localized fixes, or $800 – $1,500 if multiple runs need replacement after flood damage.
When Repair Beats Replacement
We repair when the duct shell is intact, the corrosion is surface-level, and moisture readings drop below 16% after drying. Our techs use rotary brush agitation under negative-air HEPA filtration to clear debris, then seal with mastic and mesh. The 365-Day Done Right Promise covers the repair; if it fails, we return at no charge.
When Flood Damage Forces Replacement
Standing water in a crawlspace for more than 24 hours usually ruins flex-duct insulation. The jacket traps moisture against the collar, mold colonies establish within 72 hours, and no amount of sealing fixes that. We document everything with timestamped photos and moisture readings so your insurer sees why replacement is necessary.
Air Duct Sealing in Edmonds
Air Duct Sealing in Edmonds is as much about moisture control as it is about stopping air leaks. The marine air off Puget Sound keeps crawlspace humidity high year-round, and sealing damp ducts with mastic just traps that moisture against salt-weakened joints. A typical whole-home seal in Edmonds runs $450 – $1,200, with smaller partial-system seals starting around $280.
The Pre-Seal Assessment That Others Skip
Before any mastic goes on, we pressure-test the system, run camera inspection through the main trunk, and take moisture readings at every crawlspace junction. In bluff homes facing the Sound, we also inspect for salt corrosion on the collar rings. Skipping this step is why some Edmonds homeowners smell musty air six weeks after a “seal.”
Mastic, Mesh, and Mechanical Seals
We seal supply and return joints with duct-sealing mastic reinforced with fiberglass mesh, the standard that holds up in damp crawlspaces. Where flex meets metal, we use mechanical collars with draw bands, not tape. Tape fails in Edmonds humidity. Mastic doesn’t.
Trusted Brands We Service in Edmonds
Our Edmonds crews carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, plus filtration products from Honeywell, Aprilaire, and Guardsman. We stock replacement collars, flex duct, and sealant materials locally so most Edmonds jobs finish in one visit without waiting on parts. The rotary brush systems handle the fine cedar and fir pollen that loads up Edmonds ducts each spring. Negative-air machines with HEPA filtration keep your home clean while we work. When we recommend an Aprilaire media filter or Guardsman UV treatment after sealing, it’s because your specific duct layout and local pollen load warrant it, not because we’re upselling.
Common Duct Sealing Problems We See in Edmonds Homes
- Salt corrosion on Sound-facing vents. Edmonds ramblers along the bluff have crawlspace vents that pull marine air directly off Puget Sound. The salt corrodes flex-duct collars and dampens the insulation jacket, so the duct fails pressure tests even when no visible tear exists. We see this block after block near the ferry terminal.
- Sealing over still-damp runs after a crawlspace flood. Mastic and mesh trap moisture against the duct wall. Mold returns within three weeks. We dry first, document moisture readings, then seal only when the runs read below 16%.
- Ignoring the blower motor after water intrusion. A perfectly sealed duct system connected to a corroded air handler just moves damp, musty air through clean pipes. We inspect the cabinet and motor on every post-flood job.
- Retrofitted flex duct in 1950s-’70s ramblers. Homes in the Bowl and Perrinville were built for floor furnaces, then retrofitted with flex duct that was never properly supported or sealed. The sagging runs collect pollen debris and condensate in Edmonds’s humid crawlspaces.
Pricing for Duct Sealing in Edmonds, WA
Whole-home duct sealing in Edmonds typically runs $450 – $1,200. Partial sealing of a single zone or problem area starts around $280. Duct repair after minor corrosion or localized damage runs $280 – $650. If flood or storm damage forces replacement of multiple runs, you’re looking at $800 – $1,500.
What moves the price: system size (a 2,000-square-foot rambler with attic and crawlspace runs takes longer than a compact townhome), accessibility (tight Edmonds crawlspaces under original 1960s construction add labor), and whether we need to dry and document before sealing. We do not quote per-vent prices. We quote one flat price per system, agreed in writing before work starts. The price does not move at the door.
Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Edmonds
Our crews handle Duct Sealing in Edmonds and the surrounding communities: Mountlake Terrace, Lynnwood, Kenmore, and Kingston. Each job follows The Garrison Standard: written price, written guarantee, background-checked uniformed technicians, and the 365-Day Done Right Promise.
Serving Edmonds, WA - Our Local Coverage Area
We’re based in the Edmonds 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 Edmonds
They can be cleaned and sealed only if the flex-duct insulation jacket is dry and intact, with moisture readings below 16% and no salt corrosion on the collars. If standing water sat for more than 24 hours, the insulation is usually ruined and mold risk is too high for sealing. We document every run with timestamped photos and moisture readings so you and your insurer know which is which. Call (361) 326-5060 for a free post-flood assessment.
Salt-laden marine air enters through crawlspace vents facing Puget Sound, corrodes the metal collars on flex duct, and keeps the insulation jacket damp. That combination produces a musty, brackish odor that standard duct cleaning won’t fix. We dry the runs, replace corroded collars, and seal with mastic only after moisture readings confirm the system is dry. The Aprilaire-filtered systems we install after sealing prevent recurrence.
Most insurers cover duct sealing and repair after documented water intrusion, but they require proof that the work was necessary and properly scoped. We provide timestamped photo logs, moisture readings, and written corrosion assessments with every post-flood job. Our documentation has been accepted by Edmonds-area insurers on the first submission. We do not start work until you have a claim number and understand your deductible.
The Douglas fir and western red cedar canopy surrounding Edmonds produces fine pollen that loads up fresh-air intakes and return grilles each spring and summer. If ducts are poorly sealed, that pollen pulls into the system through leaks in the crawlspace or attic, bypassing the filter entirely. Proper sealing forces all intake air through the filtration path. We often pair sealing with a Honeywell or Aprilaire media upgrade for homes under heavy tree cover.
Yes, and it’s often the single most cost-effective improvement for these homes. The 1950s-’70s ramblers in the Bowl and Perrinville were never designed for forced-air distribution; the retrofit flex was hastily installed with minimal sealing and support. Sealing the sagging, leaky joints restores airflow to rooms that never got warm, reduces the pollen and rodent debris pulled through crawlspace gaps, and cuts the energy waste from conditioned air escaping into your damp Edmonds crawlspace. A typical retrofit seal runs $450 – $950 depending on linear footage.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Edmonds since 2004.