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 Air Duct Cleaning Across Renton
Air duct cleaning in Renton typically runs $350 – $650 for a full residential system, and most jobs are scheduled within a few days of your call. If you’re catching a musty smell every time the furnace kicks on in late October, or you’ve never had the ductwork cleaned in a mid-century home near the Cedar River, that’s your sign to get it looked at. We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and our Air Duct Cleaning in Renton crews work out of our Seattle office to cover the valley on short notice. Call us at (361) 326-5060 – estimates are free, and we put the price in writing before any work starts.
Why Hollis Air Duct Cleaning Is Renton’s Preferred Air Duct Cleaning Company
We’ve been in business since 2004, and our Air Duct Cleaning teams know the Cedar River Valley’s specific problems. Roy Castellanos leads our operation, and The Garrison Standard he enforces means background-checked, uniformed technicians who arrive inside the quoted window, price the job in writing, and leave the site clean. Every repair and cleaning is backed by our 365-Day Done Right Promise – if the work fails 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. When you schedule in Renton, you know who’s showing up and when.
Ductwork Cleaning in Renton
Ductwork Cleaning in Renton means source removal from every reachable surface of your supply and return system, not a vacuum at the registers and a fogged scent. We use Rotobrush rotary brush systems to agitate debris off duct walls, paired with Nikro negative-air machines that hold the entire system under suction so nothing escapes into your living space. HEPA filtration at the collector captures what comes loose. For most Renton homes, a full residential Ductwork Cleaning runs $350 – $550; larger systems or homes with extensive rodent debris in the trunk lines can reach $650.
What We Clean on Every Job
Supply ducts, return ducts, the air handler cabinet, and the blower motor. In Renton’s 1950s ranches, the return plenum is often where moisture and debris concentrate, and skipping it is why the musty smell comes back. We don’t skip it.
When Renton Homeowners Call Us
Visible dust at registers, a smell that worsens when heat cycles on, or after any water intrusion in a crawlspace or basement. In Kennydale and the Renton Highlands, we also get calls when homeowners realize their galvanized steel has never been cleaned since the house was built.
Air Duct Inspection in Renton
Air Duct Inspection in Renton is how you know whether you need cleaning, sealing, or replacement before anyone quotes a price. We run a video camera through the trunk and branch lines to show you what’s inside: rust scale on original galvanized steel, sagging flex duct in newer attics, or rodent debris carried in from the greenbelts. An inspection runs $150 – $250 and is credited toward the cleaning if you move forward. In the Renton Highlands we pulled the trunk line off a 1958 split-level and found the original galvanized steel lined with rust scale and decades of rodent debris carried in from the greenbelt behind the property. We ran the Rotobrush agitation tools through every branch, held the system under negative pressure with HEPA filtration at the collector, then camera-inspected the supply and return ducts to confirm bare metal before reconnecting the air handler. The homeowner’s complaint – a musty smell that got worse every time the furnace kicked on in November – was gone at the registers.
What the Camera Reveals
Homeowners see the same feed we see. If the duct is sound but dirty, we quote cleaning. If the galvanized steel is perforated with rust or flex duct is torn and sagging, we’ll tell you that too. No upsell, just the condition of your system in plain view.
Inspection Before Purchase
Buyers in Renton’s older neighborhoods increasingly request duct video before closing. Sellers use it to document that the system is clean or to disclose what needs work. Either way, you have a dated recording of what’s in the walls.
Trusted Brands We Service in Renton
We clean and service duct systems connected to equipment from Aprilaire, Abatement Technologies, and Guardsman, and we stock common filtration components for Renton customers so there’s no waiting on parts. Our rotary brush systems are from Rotobrush, our negative-air collection from Nikro. When a Renton home needs a filtration upgrade after cleaning, we size and install Aprilaire media cleaners or Guardsman UV systems to spec, not by guess. Fast turnaround because the parts are on the truck.
Common Air Duct Cleaning Problems We See in Renton Homes
- Shoulder-season condensation in valley homes. Because Renton sits in the Cedar River Valley, its shoulder-season air is cool and damp while many homes still run heat, so duct interiors sit right at the dew point and condense. That’s why Renton crawlspace and attic runs grow biological growth sooner than ducts in drier, higher-elevation Eastside cities.
- Original galvanized steel in mid-century ranches. Much of Renton’s housing stock consists of post-WWII ranch-style and split-level homes with galvanized ductwork now 60 – 80 years old. The internal rust scale traps debris and moisture, and the rough surface holds odors that smooth modern ducting does not.
- Rodent debris in greenbelt-adjacent neighborhoods. In Renton’s Kennydale and Highlands neighborhoods, technicians frequently find that original 1950s ductwork has never been cleaned and contains decades of accumulated dust mixed with rodent debris. Proximity to wooded greenbelts and the Cedar River trail means access points are common.
- Sagging flex duct in newer construction. Homes in the Renton Highlands and along the Valley floor built in recent decades often use flex duct in attics. Poor support lets it sag, creating low spots where valley humidity condenses and microbial growth takes hold.
Pricing for Air Duct Cleaning in Renton, WA
A typical residential Ductwork Cleaning in Renton runs $350 – $550 for a standard system up to about 15 vents. Larger homes, separate zone systems, or properties with extensive debris in the trunk lines can reach $650. Air Duct Inspection is $150 – $250, credited toward cleaning if you proceed. Commercial systems are priced per system after inspection.
What moves the price: accessibility of the air handler, number of supply and return branches, whether we need to cut access panels in hard-plumbed galvanized trunks, and the degree of contamination. We do not price per vent. One flat price per system, agreed in writing before work starts. No add-ons at the door.
Call (361) 326-5060 for an exact quote. Estimates are free.
We Also Serve Cities Near Renton
Our crews cover Kent, Mercer Island, Maple Valley, and Issaquah from the same dispatch point. Each of these cities has different duct problems – drier eastside air in Issaquah, Mercer Island’s waterfront exposure, Kent’s mix of industrial and residential zones – and we adjust our approach accordingly. If you’re in one of these areas, the same pricing structure and 365-Day Done Right Promise apply.
Serving Renton, WA - Our Local Coverage Area
We’re based in the Renton 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 in Renton
The Cedar River Valley traps cool, damp air during shoulder seasons while furnaces still cycle, so duct interiors hit the dew point and condense. Higher humidity plus older galvanized steel with internal rust creates a surface that holds moisture and feeds microbial growth. Drier, higher-elevation Eastside cities don’t see this combination as severely. Call (361) 326-5060 if you’re smelling it at the registers.
No. Fogging masks odor while the wet dust, rodent debris, and rust scale stay bonded to the duct walls. Real fix: agitation with a rotary brush system under negative pressure to remove the source, then verify with camera inspection. We don’t sell fogging as a substitute for cleaning. Call (361) 326-5060 for source removal pricing.
Usually it can be cleaned if the metal is structurally sound. We camera-inspect first. If the galvanized steel is perforated with rust or separated at the seams, we’ll show you and quote replacement. If it’s intact but lined with scale and debris, rotary brush agitation with negative-air collection restores airflow and removes the odor source. Call (361) 326-5060 to schedule an inspection.
Ask what’s included. A proper job cleans supply ducts, return ducts, air handler cabinet, and blower motor, with the system under continuous negative pressure and HEPA filtration. We provide before-and-after photos from the camera inspection. If a quote seems low, ask whether they’re cutting access panels in the trunk or just reaching what they can from the registers. Call (361) 326-5060 and we’ll walk you through our process.
Every 5 – 7 years for most homes, or sooner after any water intrusion, rodent activity, or if you notice odors or reduced airflow. Renton’s valley humidity and older housing stock mean debris accumulates faster than in drier climates. Homes with crawlspaces that flood seasonally may need more frequent inspection. Call (361) 326-5060 for a free assessment.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Renton since 2004.