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 Bothell
HVAC cleaning in Bothell typically runs $350 – $650 for a full system clean, and the honest version is that the bulk of the work happens where you can’t see it: inside the return trunk, across the evaporator coil, and through the blower wheel. We serve homes from Canyon Park to Maywood Hills, and our crews come equipped with Nikro HEPA extraction units and Abatement Technologies containment so the debris pulled from your ductwork never re-enters your living space. If you’re calling from Bothell, you’ll get a live person on the phone, a written price before any work begins, and the same flat-rate system pricing whether you’re in a 1970s rambler off Bothell-Everett Highway or a newer build near Thrasher’s Corner. Call (737) 727-2314 for a free estimate.
Why Cardinal Air Duct Cleaning Is Bothell’s Preferred HVAC Cleaning Company
Bothell homeowners keep calling us back for a reason that isn’t flashy: we show the work. Every job includes before-and-after photos of your own ducts, not someone else’s stock images. Omar Haddad, who leads our HVAC cleaning operations, built the process around one standard: if you can’t see the work, you shouldn’t pay for it. That’s why we run a camera inspection before and after, and why the written price you receive covers the entire system, not a per-vent count that conveniently skips the hard-to-reach runs.
Our HVAC Cleaning team also works under the 365-Day Done Right Promise. If the work isn’t right within a full year, we return and correct it at no charge. No prorating, no fine print. Bothell customers get the same guarantee as every city we serve because the Relay Standard doesn’t bend by zip code.
AC Cleaning in Bothell
AC Cleaning in Bothell means pulling the blower housing, cleaning the evaporator coil, and clearing the condensate line before summer humidity pushes your system harder. In Bothell’s older slab-on-grade homes, the air handler often sits in a closet or interior utility room, which traps heat and accelerates coil fouling. A full AC cleaning here typically runs $300 – $500 depending on access and how much biofilm has built up on the coil fins.
Evaporator Coil Access and Treatment
We remove the access panel, photograph the coil before and after, and apply a coil treatment that breaks down the film without eating into the aluminum. If the coil is too far gone for cleaning to restore airflow, we tell you plainly rather than selling a service that won’t hold. The written price you approved before we started doesn’t change at the door.
Blower Wheel and Condensate Line
The blower wheel in many Bothell homes is caked with a gray paste of dust and moisture, cutting airflow enough that bedrooms at the end of a long trunk run stay warm in August. We pull the wheel, clean it, and flush the condensate drain so a clogged line doesn’t shut your system down during the first heat wave.
Evaporator Coil Cleaning in Bothell
Evaporator Coil Cleaning in Bothell is the most skipped-but-critical part of any HVAC cleaning, and it’s where cheap quotes quietly fall short. The coil sits in the air handler and does the actual heat exchange; when it’s coated with dust, pet hair, and biofilm, your system runs longer, freezes up, or trips the high-pressure switch. This service typically runs $150 – $250 when done as part of a full HVAC cleaning, or $250 – $350 as a standalone job in Bothell.
Biofilm and Humidity Reality
Bothell’s wet-spring and dry-summer pattern creates the worst conditions for coil fouling: months of damp air cycle through the coil, then summer heat bakes the residue onto the fins. We see coil faces in Bothell that look like felt. Cleaning that properly requires more than a spray-and-go. It takes coil cleaner dwell time followed by low-pressure flushing so you don’t bend the fins.
When the Coil Is Beyond Cleaning
Sometimes the coil is too corroded or impacted for cleaning to restore performance, and the right move is replacement, not a stronger chemical. Our team will show you the photos, point out the failed areas, and give you a written price for what it actually needs. No scare tactics. Just the facts as they show on the camera screen.
Trusted Brands We Service in Bothell
We stock and service Honeywell filtration products and Aprilaire media cabinets, and our techs clean around whatever brand your system carries: Carrier, Trane, Lennox, Goodman, Rheem, and the rest. If your Bothell home runs a heat pump from the early 2000s or a high-efficiency furnace installed last year, the cleaning process stays the same, but the access points and coil configurations change. Our technicians arrive knowing the equipment model ahead of time, carrying the right tools and filtration options before the first screw comes out.
Common HVAC Cleaning Problems We See in Bothell Homes
- Slab-on-grade trunk runs through unconditioned crawlspaces. Many 1970s – 1990s Bothell subdivisions were built on slabs, which means the main supply trunk often runs through a cold, damp crawlspace where dust and rodent activity concentrate. Per-vent cleaning misses these runs entirely because they’re hard to access.
- Oversized filters starving the blower. Bothell homeowners often install high-MERV filters (MERV 11, 13, or higher) to combat seasonal pollen, but older blower motors weren’t designed for that pressure drop. We find blower wheels caked in debris because airflow dropped so low the motor was working against itself.
- Evaporator coils ignored during “duct only” cleanings. The coil is where the actual heat transfer happens, but many cleaning companies in Bothell never open the air handler. The ducts look cleaner, and the system still underperforms.
- Rodent debris in return trunks. In older crawlspace homes near North Creek and the Bothell-Everett Highway corridor, return trunks pass through unconditioned space and can collect nesting material and droppings. A camera inspection catches it before a brush stirs it into your living space.
Pricing for HVAC Cleaning in Bothell, WA
A full HVAC cleaning in Bothell runs $350 – $650 for a typical single-family home. The range reflects access, system size, and whether you’re including the air handler and evaporator coil (you should). AC cleaning alone lands around $300 – $500. Evaporator coil cleaning as a standalone job is $250 – $350. We quote one flat price per system before any work starts, and that price doesn’t move because the crawlspace was tight or the trunk run was long. You’ll also receive a digital invoice payable by link, so there’s no fumbling for a checkbook when the job’s done. Call (737) 727-2314 for an exact quote, and we’ll walk through your system’s specifics over the phone.
We Also Serve Cities Near Bothell
Our teams cover Bothell plus the surrounding north King and south Snohomish county communities. That includes Kenmore to the south, Woodinville to the east, Lynnwood to the west, and Kirkland across the lake. If you’re anywhere in the Bothell area, HVAC Cleaning in Bothell covers you. Dispatch and scheduling coordinate from our Seattle metro office, but crews serving Bothell live and work in the area.
Serving Bothell, WA - Our Local Coverage Area
We’re based in the Bothell 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 Bothell
We charge one flat price per system. No per-vent math, no add-ons once we’re in your home. Per-vent pricing on Bothell’s slab-on-grade homes almost always means the long crawlspace trunk runs get skipped because they’re hard to reach and don’t have registers to count. A whole-system quote covers the supply trunk, return trunk, air handler, blower wheel, and evaporator coil. Call (737) 727-2314 for a written price before any work starts.
For most Bothell homes, every 3 to 5 years is realistic. If you have pets, multiple occupants, recent construction, or a crawlspace with rodent activity, you’ll be on the shorter end. Homes along heavily trafficked corridors like Bothell-Everett Highway or SR 527 tend to pull more road dust into the return. If you’re unsure whether yours needs it, call us for a camera inspection and we’ll show you the evidence either way.
HVAC cleaning includes the air handler, blower wheel, evaporator coil, and condensate drain, while air duct cleaning focuses only on the ductwork. In Bothell’s older slab-on-grade homes, skipping the air handler during a duct cleaning leaves the most fouled component untouched, which is why we always inspect and clean the coil and blower as part of a full system job.
Yes. You’ll receive before-and-after photos of your own ducts, coil, and blower wheel as part of every job. Not a generic set of pictures. Your system, your photos, delivered to your phone before you pay. That’s the Relay Standard, and it’s not optional.
We schedule by appointment because the right first step in Bothell is usually a camera inspection to see what’s actually in the ducts before cleaning begins. No same-day scrambling, no truck rolling without a plan. You’ll get a confirmed arrival window you can track live, and a written price agreed before any tools come out. Call (737) 727-2314 and we’ll book the soonest available slot that fits your schedule.
We Know Bothell’s HVAC Systems Because We Work in Them
Many Bothell homes sit in older 1970s – 1990s subdivisions on slab-on-grade construction with sprawling main trunks that run through unconditioned crawlspaces and attics. Those sheet-metal runs accumulate more dust and rodent debris than the short, conditioned runs typical of newer construction in adjacent Woodinville. That layout also means the blower motor and evaporator coil often need inspection before any duct cleaning begins, because the air handler sits downstream of whatever has collected in the crawlspace trunk.
On a job in the North Creek area off Bothell-Everett Highway, our tech ran a camera inspection and found the return trunk lined with rodent nesting material where it passed through an unheated crawlspace. We set negative pressure at the air handler, used agitation tools on the supply and return ducts, and pulled the debris through HEPA filtration before sealing the access. The homeowner got before-and-after photos of the run and a note that the MERV rating on their filter was too high for the older blower motor. That’s the kind of detail we capture on every Bothell job, because it changes how your system actually performs.
Omar Haddad and the team at Cardinal Air Duct Cleaning don’t do per-vent quotes, don’t skip the air handler, and don’t promise same-day service on a system that first needs a camera to tell us what we’re dealing with. If you want a straight answer about what your Bothell HVAC system needs and what it costs, call (737) 727-2314 for a free estimate. We’ll give you a written price before any work starts, and you’ll see the proof when it’s done.
Written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, serving Bothell and the surrounding north King County area.