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 SeaTac
Air Duct Cleaning in SeaTac costs between $450 and $900 for a full system on a typical single-family home. That includes the supply and return duct runs, the air handler, blower motor, evaporator coil, and all register covers. We’re Cardinal Air Duct Cleaning, part of the Relay Home Co. family founded in 2005, and we serve every SeaTac neighborhood from Angle Lake to McMicken Heights. Our technicians arrive in uniform, run professional-grade equipment, and hand you a written price before any work starts. Call (737) 727-2314 for a free estimate.
Why Cardinal Air Duct Cleaning Is SeaTac’s Preferred HVAC Cleaning Company
SeaTac is not a bedroom suburb. It’s a working city wrapped around SEA Airport, and that changes how HVAC systems behave. Our crews see the difference between a rambler off South 170th Street and a multi-family corridor building along International Blvd. Both need cleaning, but they need different access planning and different scopes of work. We know the building managers, the parking constraints, and the flight-path dust patterns that show up in return plenums across SeaTac. That local knowledge means we show up prepared, not figuring it out on your doorstep.
Every SeaTac job runs on the same foundation: a live trackable arrival window through the Relay Standard, before-and-after photos of your own ducts, and a digital invoice you can pay from your phone. Background-checked, uniformed technicians. A live person answers when you call, any hour. And if the work isn’t right within 365 days, we come back and make it right. That’s the 365-Day Done Right Promise, and it covers every SeaTac job without exception. Omar Haddad leads our team with one rule: the price you see before we start is the price you pay when we leave.
You can also learn more about our full process on our HVAC Cleaning hub page, which breaks down every step we take from inspection to final walkthrough.
AC Duct Cleaning in SeaTac
AC duct cleaning in SeaTac means more than vacuuming the branch runs. It means opening the air handler, pulling the blower motor, cleaning the evaporator coil, and then running mechanical agitation through the full SeaTac duct network under negative pressure. That’s the term for pulling air through the system with a HEPA vacuum while the agitation tools loosen debris, so loosened material goes into the vacuum, not into your living room.
A standard AC duct cleaning for a SeaTac home runs $450 to $700. If the system has years of airport-adjacent buildup, a second-pass treatment or coil application may push it toward the higher end. We quote one flat price per system before work starts. No per-vent multipliers, no add-ons once the tech is inside.
Evaporator Coil Cleaning
The evaporator coil sits in the air handler and gets coated in the same fine grey dust that settles on cars parked near the airport. A dirty coil reduces cooling capacity and runs your electric bill up. We clean the coil with professional-grade solutions and document it with photos.
Blower Cleaning
We pull the blower motor and housing from the air handler. The blower wheel gets caked in lint and dust that passes the filter. We use brush agitation and compressed air to clear each blade, then wipe down the housing. It’s the difference between a quick surface pass and a real cleaning.
Furnace Cleaning in SeaTac
Furnace cleaning in SeaTac focuses on the burner chamber, heat exchanger, blower motor, and the return and supply duct runs. During the fall, when the first cold snap hits and every furnace starts firing again, SeaTac homes burn off a season’s worth of dust, pet hair, and airport-adjacent particulate. If you smell that burnt-dust odor when the heat kicks on, that’s the furnace telling you it needs attention.
A furnace cleaning in SeaTac runs $400 to $800 depending on system size and condition. That includes the full duct network, air handler cleaning, and heat exchanger cleaning. We quote it flat, per system, before any work begins.
Heat Exchanger Cleaning
The heat exchanger is the metal path that transfers burner heat to your air. When it’s coated in dust, you lose heating efficiency and the system runs longer. We inspect the exchanger for cracks and clean the accessible surfaces. If we find a problem, you get a written recommendation with photos, not a scare tactic.
Access and Multi-Family Coordination
Many SeaTac apartments and townhomes along International Blvd have building access rules that require vendor insurance documentation and scheduling windows. We handle that coordination with your building manager before we arrive. Our team carries the paperwork, and we book around the access schedule.
Trusted Brands We Service in SeaTac
We service all major HVAC brands and install quality filtration components when your system needs them. We stock Guardsman and Aprilaire filters for SeaTac customers, and we use Rotobrush brush agitation systems paired with Nikro HEPA vacuum extraction on every job. Abatement Technologies containment units keep the work area sealed off so we’re not blowing dust back into your living space. If your furnace or air handler needs a replacement filter housing, we can install it same visit when parts are on the truck.
Common HVAC Cleaning Problems We See in SeaTac Homes
- Flight-path dust loading. Homes near SEA Airport, especially north of the runways around South 176th Street, pull in fine particulate that settles on coils and blower wheels faster than in other parts of the Sound. This shows up as a heavier buildup on the return plenum and air handler.
- Mid-century rambler duct design. Older SeaTac ramblers from the 1950s and 1960s often have undersized return ducts for the furnaces they now run. That means more pull on the system, more bypass dust, and quicker buildup around the blower.
- Multi-family access and skipped scopes. Apartment HVAC cleaning jobs on the International Blvd corridor sometimes get cut short because a tech wants to avoid coordination with the building manager. We handle the paperwork and still do the full air handler and duct scope.
- Register count shock. A SeaTac homeowner gets quoted a low per-vent price, then the tech counts registers and suddenly the total tripled. That’s the per-vent game. We don’t play it. One flat price per system, written before we start.
Pricing for HVAC Cleaning in SeaTac, WA
A standard single-family HVAC cleaning in SeaTac runs $450 to $900. That covers the full duct network, air handler, blower motor, evaporator coil, and heat exchanger cleaning. Larger homes with long duct runs and multiple returns fall toward the top of the range. If you have a smaller condo or townhome with a single air handler, you’re typically looking at $400 to $600. What moves the price up in SeaTac is not register count. It’s whether the blower motor and coil need deep work, whether the system has years of airport-adjacent buildup, and whether access coordination with a building manager adds time. You get one written price before work starts. If you want an exact number for your system, call (737) 727-2314 and we’ll give you a free estimate.
We Also Serve Cities Near SeaTac
Our crews are dispatched from the Seattle metro area, which lets us cover nearby markets without the franchise markup. We serve HVAC Cleaning in SeaTac and surrounding communities including Seattle, Tacoma, Spokane, and Vancouver. If you’re outside SeaTac proper, call and ask about coverage. We’ll tell you straight whether we can get a crew to you.
Serving SeaTac, WA - Our Local Coverage Area
We’re based in the SeaTac 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 SeaTac
Most SeaTac homes need a full HVAC cleaning every 3 to 5 years. Homes within a mile of SEA Airport or along International Blvd may need it every 2 to 3 years because of the higher particulate load. If you’ve just bought a home off South 170th Street and don’t know the duct history, start with a cleaning and document it with photos. Don’t schedule one if your system was cleaned within the last 2 years and you’ve been changing filters regularly. Call (737) 727-2314 if you’re not sure whether yours is due.
We charge one flat price per system. The quote is written before any work starts, and it does not change based on register count. SeaTac’s mix of small ramblers and larger multi-family units makes per-vent pricing particularly easy to abuse. A company quotes a low per-vent rate, then counts your registers and the total triples. We’ll tell you the full price up front, in writing, before a single duct is touched.
Our HVAC cleaning includes the full air handler: blower motor removal and cleaning, evaporator coil cleaning, and heat exchanger cleaning where applicable. We don’t just vacuum the branch runs and call it done. The air handler is where the worst buildup happens in SeaTac homes because of the fine particulate that gets pulled through. We photograph the air handler before and after so you can see exactly what was removed. Call (737) 727-2314 to schedule.
We don’t promise same-day service, but we do offer scheduled appointments through the Relay Standard with a live trackable arrival window, so you know exactly when your technician will show up. Same-day promises in this trade usually mean a rushed job or a contractor who isn’t busy for a reason. We’d rather schedule you properly and do the full scope. Call (737) 727-2314 and we’ll get you on the schedule.
Yes. We coordinate with building managers along the International Blvd corridor and throughout SeaTac and handle the insurance documentation, access window scheduling, and any building-specific rules before we arrive. Many of our SeaTac jobs are in multi-family buildings. We’ll work out the access details with your management office so the job gets done without a standoff at the front door.
Call Cardinal Air Duct Cleaning in SeaTac
If your HVAC system is blowing dust, running noisier than it used to, or just hasn’t been cleaned in years, call us at (737) 727-2314 for a free estimate. One written price per system before work starts. Before-and-after photos of your own ducts. A live trackable arrival window. And a 365-Day Done Right Promise on every job. That’s how HVAC cleaning in SeaTac should work.
Written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, serving SeaTac, WA.