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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After
Before
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Before
AfterAir Duct Cleaning Company in East Renton Highlands, WA
Hollis Air Duct Cleaning handles air duct cleaning, dryer vent cleaning, and duct sealing for homeowners in East Renton Highlands. The work here differs from flatland jobs because this plateau community sits where cool, wet air from the Cascade foothills meets suburban HVAC systems running longer heating cycles than homes in Renton proper. We’re familiar with the brittle galvanized ductwork and degrading flex-duct found in the 1970s through 1990s homes that make up most of the local housing stock. Call (361) 326-5060 for a free estimate, or read on for what East Renton Highlands homeowners should know before booking any ductwork.
Why East Renton Highlands Homes Are Different
East Renton Highlands sits at the transition between the lowland suburbs and the Cascade foothills, giving it a climate profile that is cooler and wetter than nearby Renton proper. That means HVAC systems here run longer heating cycles, and ductwork accumulates the damp temperate-rainforest dust and pollen that defines air quality on the Sammamish Plateau’s western edge.
With roughly 150 rainy days per year and cool, damp winters, homes here stay closed up for much of the year, trapping dust, mold spores, and pet dander in the ductwork. The summer pollen from surrounding Douglas fir and cedar forests also gets drawn into return-air systems. Many homes use heat pumps and electric forced-air systems rather than gas furnaces, which changes how we approach the cleaning. A local technician knows that older two-story homes on the plateau’s east side, built in the 1980s, often still have original foil-tape-wrapped flex duct in the attic. That material degrades from Renton’s damp attic humidity and can collapse or tear, causing pressure imbalances that make upstairs rooms stuffy. We check for this on every job.
Our Main East Renton Highlands Services
East Renton Highlands homeowners call us most often for these three services. Each has its own page with full details on what the job involves, how we price it, and what to expect.
Air Duct Cleaning in East Renton Highlands
Our air duct cleaning crews use Rotobrush rotary brush systems and Nikro negative-air machines to pull debris from the full duct run, including the main trunk lines and branch ducts that serve individual rooms. In East Renton Highlands, we pay special attention to return plenums where damp Pacific Northwest dust cakes onto galvanized steel, and we inspect flex-duct connections in attics for sagging or separation caused by humidity cycles. Every job gets a written price before we start and is covered by our 365-Day Done Right Promise. Air Duct Cleaning in East Renton Highlands covers full-home systems, partial cleanings, and post-renovation duct clearing.
Dryer Vent Cleaning in East Renton Highlands
Dryer vent cleaning in East Renton Highlands addresses a fire hazard that builds faster in homes where laundry runs more frequently during rainy-season months. We remove lint accumulation from the dryer connection through the exterior termination, using rotary brushes and high-velocity air tools that clear rigid metal ducting and the foil flex transitions common in older homes here. If the vent run is long or has multiple bends, we note that in the written price before starting. Dryer Vent Cleaning in East Renton Highlands includes flow testing after the cleaning to confirm proper exhaust.
Duct Sealing in East Renton Highlands
Duct sealing stops the conditioned-air leaks that make East Renton Highlands homes expensive to heat through damp winters. We apply mastic sealant and metal-backed tape at joints and connections, then pressure-test the system to verify results. This is especially valuable for homes with original 1980s flex duct or galvanized branch lines that have loosened at the collars over decades of thermal expansion. Sealed ducts also reduce the pressure imbalances that pull garage fumes or attic dust into living spaces. Duct Sealing in East Renton Highlands pairs well with cleaning for a complete system refresh.
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 East Renton Highlands
We stock parts and filters from Honeywell, Aprilaire, and Guardsman for East Renton Highlands service calls, and our equipment roster includes Rotobrush rotary systems and Nikro negative-air machines. Most filter replacements and component swaps ship within two business days if not already on the van. See our brands for the full list.
Pricing for Air Duct Cleaning Company in East Renton Highlands, WA
These are the typical price ranges we quote for East Renton Highlands homes. Every figure is written down and agreed before any work begins.
| Service | Typical range in East Renton Highlands |
|---|---|
| Whole-home air duct cleaning (single system) | $450 – $750 |
| Whole-home air duct cleaning (two systems) | $750 – $1,100 |
| Dryer vent cleaning (standard vent run) | $150 – $250 |
| Dryer vent cleaning (long run or rooftop termination) | $250 – $400 |
| Duct sealing (mastic, single system) | $600 – $1,200 |
| Duct sealing (two systems) | $1,000 – $1,800 |
| Return plenum deep cleaning | $150 – $300 |
| Sanitizer/deodorizer application | $100 – $200 |
| Filter upgrade (Honeywell or Aprilaire media) | $80 – $250 installed |
| Flex-duct repair or replacement (per section) | $200 – $450 |
Prices in East Renton Highlands run toward the higher end when homes have two stories with attic ductwork requiring ladder work, or when original 1980s flex duct needs repair before cleaning can proceed. The price we write down is the price you pay. It does not move at the door.
Neighborhoods We Serve in East Renton Highlands
Our crews cover the full East Renton Highlands area from the Seattle dispatch office, with most appointments scheduled within a week of your call. These are the neighborhoods we work in most often:
- Sunset Highlands
- Highlands East
- Talbot Hill vicinity (east of Renton city limits)
- Benson Hill area
- Plateau foothill properties along 156th Avenue SE corridor
Drive time from our scheduling office means most East Renton Highlands appointments fall between 8 AM and 4 PM, with arrival windows kept to two hours.
Service Area – Cities Near East Renton Highlands
East Renton Highlands sits in southern King County with easy access to the broader metro. We also schedule ductwork appointments in Seattle, WA, Spokane, WA, Tacoma, WA, and Vancouver, WA. Each location runs on The Garrison Standard: written prices, background-checked uniformed technicians, and the 365-Day Done Right Promise.
Serving East Renton Highlands, WA - Our Local Coverage Area
We’re based in the East Renton Highlands 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 East Renton Highlands
No permit is required for standard air duct cleaning or dryer vent cleaning in unincorporated King County, which includes East Renton Highlands. Duct sealing that involves modifying the HVAC plenum or adding new duct runs may trigger permit requirements; we flag this during the estimate if it applies to your job. Call (361) 326-5060 and we’ll walk through your specific setup.
Most East Renton Highlands appointments are scheduled within five to seven days, with two-hour arrival windows. We do not quote same-day or emergency dispatch for duct cleaning; this is scheduled work that requires proper equipment loading and crew assignment. Call (361) 326-5060 to check current availability.
Yes. East Renton Highlands has several neighborhoods with HOA-managed streets or gated entries. We arrive in marked vehicles with uniformed technicians and carry proof of insurance. If your HOA requires advance notice or specific parking, tell us when you book and we’ll coordinate the details before the crew heads out.
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 East Renton Highlands Customers Say
"Sealed some leaking duct joints in the crawl space with mastic. Rooms that were always cold now get air."
- Ronald W."Dryer vent was packed with lint and took two hours to dry a load. Cleaned it out from the roof cap down. One cycle again."
- Paula Q."No sales pitch. Told me which parts of the system were fine and only cleaned what needed it."
- Ted L.