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.
Before
After
Before
After
Before
AfterAir Duct Cleaning Company in Covington, WA
Most Covington homes were built during the 1990s and 2000s suburban boom with forced-air systems that have now gone 20-plus years without their first duct cleaning. We’re Hollis Air Duct Cleaning, and we specialize in cleaning, sealing, and restoring those aging flex-duct systems in Cedar River valley homes where cottonwood seed drift and high humidity create problems you won’t find in newer King County developments. Every Covington job starts with a written price that doesn’t change, and every repair is backed by our 365-Day Done Right Promise. Call us at (361) 326-5060 for a free estimate.
Why Covington Homes Are Different
Covington’s housing stock sets it apart from Seattle or Tacoma. The city filled in fast during the 1990s and 2000s, and most neighborhoods are tract homes with flex duct buried in attic insulation, connected to gas furnaces that have cycled through wet Puget Sound winters and dry summers for two decades or more. That flex duct doesn’t age the same way rigid metal does. It sags, it collects construction debris from the original build, and the porous insulation jacket can harbor mold when fall humidity spikes and the system sits idle.
The location in the Cedar River valley adds another layer. Wet, mild winters and dry summers are the baseline, but the real issue is what blows in with the breeze. Cottonwood fluff and maple seeds drift from the river corridor and nearby greenbelts, clogging return grilles and coating blower wheels faster than in more urban parts of King County. Many Covington homes back directly onto greenbelts or the Cedar River trail, so fresh-air intakes and dryer vents pull in organic debris that suburban lots in Kent or Renton simply don’t see. We’ve found rodent droppings in attic duct runs near the Jenkins Creek wetlands, and pollen loads in spring that blanket interior filters in weeks, not months.
Our Main Covington Services
Covington homeowners call us most often for three jobs: full air duct cleaning, dryer vent cleaning, and duct sealing. Each has its own local challenges, and each gets its own dedicated page with pricing and specifics.
Air Duct Cleaning in Covington
Our Covington air duct cleaning jobs start with a camera inspection of the trunk line, then a rotary brush pass through each supply and return run. In 1990s-era Covington homes, we often find flex duct that has detached at the collar, construction debris from the original build, and mold spots where attic humidity has penetrated the insulation jacket. We use Rotobrush systems and negative-air containment to keep debris out of your living space. Air Duct Cleaning in Covington covers full pricing, what the visit includes, and how we handle the older flex-duct systems common here.
Dryer Vent Cleaning in Covington
Covington’s greenbelt-backed lots mean dryer vents often terminate near cottonwood stands or maple canopy, and the fluff accumulates fast. A clogged dryer vent in a Covington home isn’t just an efficiency problem; it’s a fire hazard that builds up faster than the manufacturer cleaning interval suggests. We pull the full lint column with a rotary auger and inspect the termination cap for seed and debris blockage. Dryer Vent Cleaning in Covington has exact pricing and explains why this job needs doing more often here than in denser cities.
Duct Sealing in Covington
Twenty-year-old flex duct in Covington attics has had time to loosen at every connection. We seal with mastic and mechanical fasteners, then pressure-test the system to verify the fix. Duct sealing is often the right follow-up to cleaning, because once the debris is out, you don’t want conditioned air leaking into the attic through gaps the original builder missed. Duct Sealing in Covington covers when sealing makes sense, how we test our work, and what Covington homeowners typically save on heating bills.
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 Covington
We stock parts and filtration products from Aprilaire, Abatement Technologies, and Guardsman, and we carry Rotobrush rotary systems for the deep cleans older Covington ductwork needs. Most replacement filters and access panels are available same-day; specialized Abatement negative-air components ship to our Seattle office within 24 hours. See our brands for the full equipment roster.
Pricing for Air Duct Cleaning Company in Covington, WA
| Service | Typical range in Covington |
|---|---|
| Whole-home air duct cleaning (single system, up to 12 vents) | $380 – $520 |
| Whole-home air duct cleaning (larger home, 13 – 20 vents) | $520 – $680 |
| Dryer vent cleaning (ground-floor termination) | $140 – $190 |
| Dryer vent cleaning (second-story or roof termination) | $190 – $260 |
| Duct sealing (single system, manual mastic method) | $420 – $580 |
| Duct sealing with aerosol sealant (single system) | $1,200 – $1,800 |
| HVAC blower wheel cleaning | $85 – $140 |
| Return grille and trunk line deep clean (add-on) | $120 – $180 |
| Camera inspection of ductwork | $75 – $125 |
| Sanitizing/mildew treatment (per system) | $95 – $150 |
What pushes Covington jobs toward the higher end: second-story dryer vents, detached flex-duct sections in the attic that need rehanging, and mold remediation from humidity damage in greenbelt-adjacent homes. What doesn’t change the price: showing up and finding “more vents than expected.” We count them during the estimate, write the price down, and that’s the price at the door.
Neighborhoods We Serve in Covington
We work across Covington’s full residential footprint, from the original 1990s plats to the 2000s infill near Lake Sawyer and the newer builds along Kent-Kangley Road. Most Covington appointments are scheduled within a 48-hour window, with dispatch coordinated from our Seattle office and crews routing from King County.
- Covington Woods
- Woodfield
- Jenkins Creek
- Lake Sawyer area
- Kent-Kangley corridor
Service Area – Cities Near Covington
Our crews cover the full King County and south Snohomish service region from the Seattle office. We regularly schedule jobs in Seattle, WA, Tacoma, WA, and Vancouver, WA, plus eastern Washington runs to Spokane, WA for larger commercial duct projects. Covington sits in the core King County rotation, so travel time is built into standard scheduling, not added as a surcharge.
Serving Covington, WA - Our Local Coverage Area
We’re based in the Covington 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 Covington
No permit is required for routine air duct cleaning or dryer vent cleaning in Covington. Duct sealing that involves modifying the furnace plenum or adding new return air pathways may trigger a King County mechanical permit; we flag this during the estimate and handle the paperwork if it applies. Call (361) 326-5060 and we’ll walk through your specific setup.
We schedule most Covington homeowners within two business days, sometimes next-day depending on route density. Dispatch runs from our Seattle office, and Covington is a standard daily route, not a special trip. We don’t promise same-day, but we do promise to show up inside the window we gave you, or we call ahead.
Most Covington HOAs don’t restrict indoor HVAC work, but a few newer developments near Lake Sawyer have rules about service vehicle parking or exterior vent modifications. We check HOA guidelines when you mention them, and our technicians carry proof of insurance and background-check documentation if your board requires it. If exterior dryer vent relocation is part of the job, we’ll confirm HOA architectural rules before we cut anything.
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 Covington Customers Say
"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."They checked each section with a camera and showed me the dust before and after. Thorough and honest."
- Nicole H.