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 HVAC Cleaning Across Renton
HVAC cleaning in Renton, WA typically costs $380 – $620 for a complete system, including furnace ducts, the air handler, blower, and coil. Most jobs take three to five hours and the whole point is simple: cleaner air moving through cleaner equipment. We serve Renton from our Seattle dispatch office, with local crews who know the Green River Valley, the Highlands, and every neighborhood in between. You can reach a live person anytime at (737) 727-2314.
Why Cardinal Air Duct Cleaning Is Renton’s Preferred HVAC Cleaning Company
Renton homeowners see a lot of quotes before they pick up the phone. Most of those quotes are per-vent, which means the number changes once the technician counts registers. We hand you one written price before a single duct is touched, and it does not move. That is the whole model. One flat price per system, agreed in writing, before we start.
Every booking through our HVAC Cleaning team carries the 365-Day Done Right Promise. If the work isn’t right within a full year, we return and correct it at no charge. That applies to every job, not select ones. Omar Haddad set the bar on this and he holds every tech to it.
Our technicians are background-checked, uniformed, and they arrive with professional-grade equipment. Rotobrush rotary brush systems for agitation. Nikro HEPA vacuums for negative-pressure extraction. Abatement Technologies containment units where the job calls for it. You know the tech’s name before they show up, track their arrival live through The Relay Standard, and get before-and-after photos of your own ducts when the job is done.
Furnace Duct Cleaning in Renton
Furnace duct cleaning in Renton means pulling fine particulates out of the supply and return ductwork that moves heated air through your house all winter. Valley-floor homes pull in a specific mix: seasonal pollen in spring, wood-smoke particulate in late fall, and the fine dust that settles out of the stable air that sits in the Green River Valley. We run our Rotobrush system through every supply and return run under negative pressure, so loosened debris goes straight into the Nikro HEPA vacuum rather than back into your living room.
What We Actually Do
We cut a small access point, send the rotary brush through each run, agitate the packed dust off the duct walls, and pull it out with negative-pressure extraction. The blower gets cleaned, the return plenum gets cleared, and we install a fresh filter before sealing everything back up. For a typical two-story Renton home, that whole furnace-side process runs $280 – $420 depending on the number of runs and the condition of the return trunk.
When Renton Homeowners Call Us
The most common trigger is dust piling up on surfaces within days of cleaning. That’s usually fine particulate bypassing a clogged filter and cycling through the return side. Another is a furnace running constantly but not heating evenly. When the blower wheel is caked, airflow drops and the system overworks. We see that a lot in older Renton homes with original 1990s duct layout.
AC Coil Cleaning in Renton
AC coil cleaning in Renton is about clearing the evaporator coil face of the fine valley dust and pet hair that builds up over a season of cooling. When the coil is coated, heat transfer drops, your AC runs longer, and the air coming out of the registers feels weak. We pull the access panel, inspect the coil, and clean it with professional coil cleaners and fin combs, not a quick spray-and-wipe. For Renton homes with a heat pump or central AC, this runs $180 – $280 as a standalone, or it’s bundled into a full-system cleaning.
Signs Your Coil Needs Attention
You’ll notice the system short-cycling, longer run times on hot days, or a freeze-up on the coil itself. That freeze-up is the coil starving for airflow because the fins are packed. We also see coil treatment as a follow-up: after cleaning, we apply an antimicrobial coil treatment that slows regrowth. That’s part of the job when conditions call for it.
Why the Highlands Matter Here
Up in the Renton Highlands, our tech pulled a camera inspection through the supply and return ducts of a 1990s two-story and found the return trunk acting as a lint pathway, with a matted layer of pet hair and fine valley dust packed against the AC coil face. We set the Rotobrush and Nikro agitation tools to work under negative pressure with HEPA filtration, cleaned the coil, and dropped in a fresh Aprilaire MERV filter. The homeowner said the upstairs registers stopped puffing dust within a day.
Trusted Brands We Service in Renton
We carry and install filtration from Honeywell and Aprilaire, and our cleaning equipment comes from Nikro and Abatement Technologies. That matters because rental-grade shop vacs simply cannot hold the negative pressure needed to extract packed fine dust from a 30-foot valley-floor return trunk. Renton homes with heat pumps, gas furnaces, or electric air handlers all fall within the same core system types we service daily. We keep common filter sizes on the truck, so a fresh MERV filter goes in the same day the cleaning is done.
Common HVAC Cleaning Problems We See in Renton Homes
- Return-side lint pathways. In two-story Renton builds from the 1980s and 1990s, the main return trunk often sits low and draws from carpeted hallways. Pet hair and fine valley dust pack against the coil face, starving the system for airflow.
- Valley-floor fine particulate. The Green River Valley traps stable air in late fall, especially along the low corridors near 405 and the lower Benson Hill area. That particulate is fine enough to pass through a standard fiberglass filter and settle in the ductwork.
- Inversion-season smoke residue. Wood-smoke inversions against the Cascade foothills push a sticky fine soot into return ducts. It bonds with existing dust and hardens, which is why a shop-vac pass does nothing. It needs mechanical agitation plus HEPA extraction.
- Per-vent pricing traps. Renton homes have long return trunk runs, sometimes 40-plus feet. A per-vent quote sounds cheap until the tech counts every register, return, and plenum access. We give one flat price per system before any work starts, and that is the price you pay.
Pricing for HVAC Cleaning in Renton, WA
A full HVAC Cleaning in Renton system job, meaning furnace ducts plus air handler plus blower plus coil, runs $380 – $620 for a typical single-family home. Furnace duct cleaning on its own is $280 – $420. AC coil cleaning alone is $180 – $280. Condenser cleaning is $120 – $180. What moves the number is the size of the home, the number of supply runs, whether there is a second return, and how long it has been since the last cleaning. The price we quote in writing is the price you pay. Call (737) 727-2314 for a free estimate.
We Also Serve Cities Near Renton
Our crews cover Renton and the surrounding area, including Kent, Mercer Island, Maple Valley, and Issaquah. If you are just across the line in one of those cities, the same flat-price system and 365-Day Done Right Promise apply. We coordinate dispatch from our Seattle office and route local crews to your neighborhood.
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 HVAC Cleaning in Renton
Most Renton homes need a full HVAC cleaning every three to five years. Homes on the valley floor with high pollen exposure, pets, or a wood-burning fireplace may be closer to two to three years. If you just moved into an older home in the Benson Hill area or the Highlands and do not know the last cleaning date, a camera inspection answers it fast. Call (737) 727-2314 and we will inspect before recommending anything.
One flat price per system, agreed in writing before we start. No per-vent counting. No add-on once the tech is inside. The only thing that changes the number is if you add a sub-service, like coil treatment or a second return cleaning, and that is always quoted and approved by you first.
The Green River Valley traps fine particulates, especially during late-fall inversions. That fine dust settles deep in the return-side ductwork and packs against the air handler. It is finer and stickier than the coarse dust you see in higher, windier King County cities, which is exactly why negative-pressure extraction with HEPA filtration matters here.
Yes. Every job includes camera-inspection photos before cleaning and the same angles after. You see your own supply runs, return trunk, coil, and blower, not stock images. It is part of The Relay Standard booking experience and it is how you know the work actually happened.
We do not offer same-day service. HVAC cleaning is a scheduled job that takes half a day to do properly with agitation tools, HEPA extraction, and a full inspection. We book in advance and give you a live trackable arrival window through The Relay Standard. Call (737) 727-2314 to schedule a free estimate.
Contact Cardinal Air Duct Cleaning in Renton
Call (737) 727-2314 today for a free estimate on furnace duct cleaning, AC coil cleaning, or a full HVAC system cleaning in Renton. You will get a written price before any work starts, before-and-after photos of your own ducts, and a full year of coverage under the 365-Day Done Right Promise. If the work is not right, we come back and make it right.
Written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, serving Renton residents through the Relay Home Co. family of brands.