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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Before
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Before
AfterAir Duct Cleaning Company in Cottage Lake, WA
Most Cottage Lake homes sit beneath a dense canopy of Douglas firs, big-leaf maples, and cottonwoods that blanket the area with pollen and organic debris each spring. That means air duct cleaning here isn’t a generic service, it’s forest-filter maintenance: clearing fir needles, moss, and pollen from intakes and duct runs that pull air at ground level through wet, wooded conditions. We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and our crews dispatch from our Seattle office to handle Cottage Lake’s specific climate and housing stock. Call (361) 326-5060 for a free written estimate before any work starts.
Why Cottage Lake Homes Are Different
Cottage Lake’s mild, wet marine climate drops 35 to 40 inches of rain annually, and the humidity rolling off the Sammamish Valley and local wetlands keeps crawlspace and attic duct runs cool and damp for months. That combination promotes mold and mildew growth inside ductwork that drier inland markets rarely see.
The housing stock here is mostly 1970s through 1990s ranch and two-story homes, many still running original flexible ductwork in attics or crawlspaces. That older flex duct sags, separates at joints, and invites rodent damage. Newer custom builds often have HRV or ERV systems that need separate filter and core cleaning on top of standard ductwork.
Here’s what our techs run into regularly: exterior fresh-air intakes mounted low on walls or near ground level, pulling in fir needles, pollen loads, and moss that clog dampers and immediately recontaminate cleaned ducts if the intake itself isn’t cleared. Longer allergy seasons from tree and grass pollen also mean Cottage Lake homeowners tend to schedule duct cleaning in spring and early summer, right when the canopy is dropping its heaviest debris.
Our Main Cottage Lake Services
Homeowners in Cottage Lake call us for three core jobs, each shaped by the local climate and housing stock.
Air Duct Cleaning in Cottage Lake
We clean the full supply and return network using a Rotobrush rotary brush system for agitation and a Nikro negative-air machine to pull loosened debris out of the home. In Cottage Lake, we always include the exterior fresh-air intake, because we’ve seen too many jobs where the ducts were spotless but the intake was packed with fir needles, dumping pollen back in within a week. Every job gets a written price before we start and is covered by our 365-Day Done Right Promise. Air Duct Cleaning in Cottage Lake
Dryer Vent Cleaning in Cottage Lake
Dryer vent cleaning in Cottage Lake runs into the same canopy problem: lint mixes with pollen and moisture to form dense, stubborn blockages, especially on vents with exterior flaps that stick in humid conditions. We run the full line from dryer to termination, check airflow with a meter, and verify the flap operates freely. If the vent fails again within a year, we come back free under our 365-Day Done Right Promise. Dryer Vent Cleaning in Cottage Lake
Duct Sealing in Cottage Lake
Sagging flex duct from the 1970s and 1980s leaks conditioned air into attics and crawlspaces, and rodent damage opens new gaps every season. We seal accessible joints and gaps with mastic and metal-backed tape, then pressure-test to confirm the improvement. For Cottage Lake homes with HRV or ERV systems, we also check and seal the dedicated ventilation duct runs that standard duct cleaning doesn’t touch. Duct Sealing in Cottage Lake
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Cottage Lake
We stock parts and filters for Honeywell, Aprilaire, and Guardsman filtration systems, plus Abatement Technologies HEPA equipment. Most filter replacements and component swaps happen on the first visit because our Seattle office keeps Cottage Lake’s common sizes in inventory.
Pricing for Air Duct Cleaning Company in Cottage Lake, WA
| Service | Typical range in Cottage Lake |
|---|---|
| Whole-home air duct cleaning (single system) | $350 – $550 |
| Whole-home air duct cleaning (two systems) | $550 – $850 |
| Dryer vent cleaning (ground-floor, single run) | $120 – $180 |
| Dryer vent cleaning (second-story or extended run) | $180 – $250 |
| Duct sealing (partial, accessible runs) | $400 – $700 |
| Duct sealing (whole-home, including test) | $800 – $1,400 |
| HRV/ERV core and filter cleaning | $150 – $250 |
| Exterior fresh-air intake cleaning | $75 – $125 |
| Sanitizer/mildew treatment (per system) | $100 – $175 |
| Main trunk line cleaning (add-on) | $150 – $250 |
What pushes Cottage Lake prices toward the higher end: multiple systems, extensive rodent damage requiring access repair, or HRV/ERV components that need separate handling. What keeps them lower: straightforward single-system ranch homes with accessible crawlspaces. Either way, we write the price down before any work starts, and that number does not move at the door.
Neighborhoods We Serve in Cottage Lake
Our crews cover the full Cottage Lake area, from the lakefront properties to the wooded lots backing onto the Sammamish Valley. Scheduling runs from our Seattle office, and we typically book Cottage Lake appointments within a few days of your call.
- Cottage Lake Estates
- West Ridge
- Woodinville Heights (Cottage Lake edge)
- Hollywood Hill area
- Sammamish Valley adjacent
Service Area – Cities Near Cottage Lake
We dispatch crews throughout the greater metro from our Seattle office. If you’re just outside Cottage Lake proper, we also serve Seattle, WA, Spokane, WA, Tacoma, WA, and Vancouver, WA. Each location operates independently under The Garrison Standard, with the same written pricing and 365-Day Done Right Promise.
Serving Cottage Lake, WA - Our Local Coverage Area
We’re based in the Cottage Lake 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 Company in Cottage Lake
No permit is required for standard duct cleaning or dryer vent cleaning in Cottage Lake. Duct sealing that involves modifying or replacing ductwork may need a permit if it alters the HVAC system’s capacity or routing; we flag that during the estimate and can advise on the process. Call (361) 326-5060 and we’ll tell you exactly what your job involves.
We typically book Cottage Lake appointments within two to five business days, depending on season. Spring pollen season fills fastest. Our phones are answered by a live person 24/7, so you can check real availability without leaving a voicemail. Call (361) 326-5060 to hold a slot.
Yes. Many newer Cottage Lake custom builds have heat-recovery or energy-recovery ventilators that need separate filter changes, core cleaning, and dedicated duct sealing. We service the full system, not just the main HVAC ducts, and we explain what each component does before we price the work. Call (361) 326-5060 for an exact quote.
What happens when you call
- 1A real person answersNo phone trees - talk to a local air duct cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Cottage Lake Customers Say
"No sales pitch. Told me which parts of the system were fine and only cleaned what needed it."
- Ted L."They checked each section with a camera and showed me the dust before and after. Thorough and honest."
- Nicole H."Duct sealing along with the cleaning cut our summer bill. Straight talk and fair price."
- Gwen O.