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
AfterFast, Reliable Air Duct Cleaning Across SeaTac
Air duct cleaning in SeaTac typically runs $390 – $690 for a standard single-system home, and most jobs are completed in 4 – 6 hours. If you live near Angle Lake, off Des Moines Memorial Drive, or in the neighborhoods around SeaTac Community Center, you’re breathing whatever has settled in your ducts, and that’s where we come in. Cardinal Air Duct Cleaning serves every corner of SeaTac with background-checked, uniformed technicians running Rotobrush brush systems and Nikro HEPA vacuums. We hand you a written price before a single vent is touched, and that number does not change at the door. Call (737) 727-2314 and a live person answers, 24/7.
Why Cardinal Air Duct Cleaning Is SeaTac’s Preferred Air Duct Cleaning Company
We don’t do bait pricing. Most SeaTac homeowners who call us have already gotten a per-vent quote somewhere else and watched it balloon once the tech counted their returns. Our approach is different: one flat price per system, written down before work starts. That price covers everything, the full supply and return side, the trunk line, the air handler, and the branch runs. It doesn’t creep because your 1970s rambler off Military Road South has a long return pan. Omar Haddad leads our SeaTac crews, and he holds every job to the 365-Day Done Right Promise. If the work isn’t right within a year, we come back and correct it at no charge. No fine print, no prorating, no “that’s not covered.” The Relay Standard backs every booking: a live arrival window you can track from your phone, before-and-after photos of your own ducts, and a digital invoice you can pay with a link. You know the tech’s name before you open the door.
Vent Cleaning in SeaTac
Vent Cleaning in SeaTac means removing the packed material from every supply and return vent in the house, not just the ones easy to reach. Because SeaTac sits on a former peat bog and the marine layer keeps humidity high, the vents here collect a damp, dark lint mat rather than the crumbly dust common inland. That changes how we clean. We run a negative-pressure extraction setup, meaning the loosened debris goes straight into a Nikro HEPA vacuum instead of back into your living room. A standard vent cleaning for a SeaTac rambler or split-level runs $390 – $690 as part of the whole-system price, never charged per vent.
Supply Vent Deep Cleaning
The supply side pushes conditioned air into rooms, so any buildup there goes exactly where you sit, sleep, and cook. We remove each vent cover, agitate the register boot with a rotary brush, and capture everything under continuous vacuum. In SeaTac homes with original 1960s and 1970s ductwork, we often find a greasy film on supply vents near kitchens that has bonded with moisture, and that takes longer to clear than ordinary dust.
Return Vent and Grille Cleaning
The return side pulls air back toward the blower, and in SeaTac it tends to carry the heaviest load because the damp air makes lint cling. We clean the return grilles, the return boots, and the return pan at the air handler. If your blower has been running loud or your hall smells musty, the return side is usually the first place we look, and it’s where we pulled roughly a trash bag’s worth of lint from a home off South 176th Street recently.
Air Duct Repair in SeaTac
Air Duct Repair in SeaTac addresses the mechanical problems that keep a cleaned system from staying clean. Older ramblers and split-levels around the city have metal ducts that were joined with tape or mastic decades ago, and the constant moisture from the marine layer speeds up failure at those joints. A disconnected return under the house pulls crawlspace air into your home, and a crushed supply branch starves the rooms at the end of the run. Repair pricing follows the same logic as cleaning: we diagnose the issue, write a flat price for the repair, and back every fix with a written guarantee and a free second visit if it fails.
Leak Sealing and Joint Repair
We find leaking duct joints with a visual inspection and pressure testing, then seal them with mastic or metal tape rated for HVAC use. A leaky return in a SeaTac crawlspace doesn’t just waste energy; it pulls damp, musty air into every room the return serves. After sealing, we recheck static pressure at the air handler so you can hear and feel the difference.
Duct Replacement Sections
When a section of duct is crushed, rusted through, or separated beyond repair, we cut it out and install a matched replacement section. On a SeaTac split-level with the air handler in a tight closet, we often find the flex connectors have collapsed from years of moisture and poor original installation. Replacement is quoted upfront, includes all materials and labor, and carries the same 365-day guarantee.
Trusted Brands We Service in SeaTac
We work on whatever system is already in your SeaTac home, whether that’s original sheet metal from the 1960s or newer flex duct installed in the last decade. Our techs service and install Honeywell filtration, Aprilaire media cabinets, and Guardsman components, and we keep common parts stocked in our metro Seattle office so SeaTac customers aren’t waiting on a shipment. Our Air Duct Cleaning team runs professional-grade equipment from Rotobrush and Nikro, with Abatement Technologies containment units for homes where dust control matters most, like those with infants, allergies, or someone working from a home office near the vents.
Common Air Duct Cleaning Problems We See in SeaTac Homes
- Damp lint packing in return pans. The former peat bog under much of SeaTac keeps crawlspace humidity unusually high, so return air carries moisture into the duct system. Lint that would blow through a drier climate’s ducts instead gets heavy, sticky, and packed into the return pan, which is why a quick “register poke” cleaning does nothing meaningful here.
- Fogging windows and musty halls in 1960s ramblers. Older SeaTac homes off streets like Military Road and Des Moines Memorial Drive often have single-pane windows and original duct joints. When return ducts leak, crawlspace air gets pulled in, and the first signs are condensation on windows and a smell that won’t leave the hallway. We fixed exactly this at a home near Sunset Park, and the smell cleared within a day of sealing and cleaning.
- Long branch runs in split-levels starving back bedrooms. SeaTac’s mid-century split-levels often have one trunk line with long branch runs to the far bedrooms. The vents at the end get weak airflow, so homeowners close them partially, which raises static pressure and makes the problem worse. After cleaning, we rebalance airflow so every room gets what it should.
- Per-vent quotes that balloon at the door. We hear this constantly from SeaTac homeowners: a low per-vent price turns into a far larger invoice once the tech counts returns, sees a second return, or discovers the trunk line is longer than expected. That’s why we quote by system, one flat number for the whole house, before anything is touched.
Pricing for Air Duct Cleaning in SeaTac, WA
We Also Serve Cities Near SeaTac
Our Air Duct Cleaning in SeaTac crew regularly works in neighboring communities across the metro. We serve Seattle, Tacoma, Spokane, and Vancouver with the same flat per-system pricing, the same written guarantee, and the same Relay Standard booking experience. If you’re a few miles outside SeaTac, call us and we’ll be straight with you about timing and cost.
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 Air Duct Cleaning in SeaTac
How often does a SeaTac home actually need its ducts cleaned?
Most SeaTac homes need their ducts cleaned every 3 to 5 years, not annually. The marine layer and former peat bog under the city mean moisture is always in play, but a properly sealed and filtered system still doesn’t accumulate enough material to justify a yearly clean. If you have pets, recent remodeling, a crawlspace that’s never been sealed, or someone in the house with allergies, you may land on the shorter end of that range. Call (737) 727-2314 and describe your home; we’ll tell you honestly whether a cleaning is called for.
Do you price per vent in SeaTac?
No. We quote one flat price per system, and that’s the number on your written quote before any work begins. We don’t charge per vent, we don’t add a fee for a second return, and we don’t charge extra for a long branch run. The $390 – $690 range for a standard SeaTac home covers the entire system, every vent, every register, and the air handler.
Do you show before-and-after photos of my actual ducts?
Yes. Every Cardinal job in SeaTac includes before-and-after photos of your own ducts, taken with a video inspection camera we run through the system. You see the return pan before we start, and you see the same view after. That’s part of The Relay Standard, and it means you never have to trust that the work was done; you’ll see it.
Can you clean the dryer vent while you’re here in SeaTac?
Yes. Dryer vent cleaning is one of our three core services, and since our techs are already at your SeaTac home with HEPA vacuums and rotary brushes, adding a dryer vent clean is a small addition to the flat system price. SeaTac’s damp lint is heavier and clings more than inland lint, so a clogged dryer vent here is not only inefficient; it’s a fire risk that we take seriously. We’ll quote it separately and show you the before-and-after.
Why does my SeaTac home smell musty even after duct cleaning?
If you’ve had a cleaning and the musty smell returned, the likely culprit is a leaking return duct pulling crawlspace air into the system. Because much of SeaTac sits on a former peat bog, that crawlspace air is damp and musty even when the ducts themselves are clean. We find this regularly in 1960s and 1970s homes near Sunset Park and Angle Lake. The fix is sealing the return side, not another cleaning. Call (737) 727-2314 and we’ll inspect the return path with a camera and tell you what’s actually happening.
Call Cardinal Air Duct Cleaning in SeaTac
When you’re ready for honest pricing, real before-and-after photos of your own ducts, and a crew that shows up when they say they will, call Cardinal Air Duct Cleaning at (737) 727-2314. We’ll walk you through what a SeaTac duct cleaning actually involves, quote you one flat price per system, and schedule you under The Relay Standard with a live arrival window you can track. Omar Haddad and our SeaTac team handle every job under the 365-Day Done Right Promise, which covers every booking, no exceptions.
Written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, serving SeaTac and the surrounding metro.