Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
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After
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Before
AfterHow Much Does Duct Repair & Sealing Cost in Renton?
Duct repair and sealing in Renton typically costs $350 to $1,400 for most single-family homes, with small patch-and-seal jobs landing near the bottom of that range and attic-routed replacements pushing toward the top. The written estimate sets the final price, and we repair ducts rather than just clean them, so the number you get reflects what it actually takes to make the system hold air again. Call (866) 942-6902 for a free estimate.
If you’ve noticed a room that never heats or cools right, dust that settles back within a day of cleaning, or a faint hiss from a supply register, you’re already looking at the problem this page prices out. Ductwork in Renton leaks for reasons that have a lot to do with where the homes sit – between the Cascade foothills and the lowlands around the Cedar River – and how they were built. We walk through honest numbers below so you can plan.
Key Takeaways
- Most duct repair and sealing jobs in Renton fall between $350 and $1,400.
- Sealing alone is usually cheaper than repairing crushed or disconnected runs.
- Attic and crawlspace ductwork on Renton’s older housing stock often drives the price up.
- The estimate is free and the price is set per job, in writing, before work starts.
- Our technicians have up to 12 years of experience with duct repair and air quality systems.
Duct Repair & Sealing Cost Breakdown (2026)
Here are the typical ranges we see in the Renton market for the work that comes up most often. These are estimates for a single-family home, and your written quote is the number that counts.
| Service | Typical 2026 Range | What It Covers |
|---|---|---|
| Sealing visible joint and register leaks | $350 – $600 | Mastic or tape sealing at accessible supply and return joints; air-balancing check |
| Full accessible duct sealing (whole home) | $600 – $1,000 | Sealing at every reachable joint, seam, and register boot across the system |
| Reconnecting a disconnected run | $400 – $800 | Re-seating and securing a duct run that has separated at a joint or boot |
| Repairing crushed or dented flex duct | $450 – $900 | Replacing damaged flexible sections that restrict airflow |
| Replacing a short section of rigid ductwork | $700 – $1,400 | New rigid duct installed and sealed to the existing system |
| Insulating exposed attic ducts | $800 – $1,500 | Adding or replacing insulation on ducts running through unconditioned space |
| Register and boot replacement | $150 – $400 each | New register, boot, and seal at the wall or floor opening |
What pushes a job toward the top of a range comes down to access and how much of the system is failing. A home where the ducts run through a clean, open attic is straightforward. A home where runs are buried under blown-in insulation, boxed into walls, or wedged under a low crawlspace takes more time and care, and that shows up in the estimate. We use professional-grade Rotobrush and Nikro systems and Abatement Technologies air filtration, which lets us work cleanly in tight spaces and contain what we dislodge rather than blowing it back into the house.
What Affects Duct Repair & Sealing Pricing in Renton
Renton isn’t a single kind of housing market. You’ve got neighborhoods near the Cedar River, established blocks around Kennydale, newer builds in the Highlands, and a lot of homes along the Renton-to-Fairwood corridor that were put up in different decades with different duct strategies. Here’s what moves the price.
- Where the ducts run. Attic and crawlspace runs are the most common in this market, and both affect labor. Attic work in summer is hot and slow going; crawlspace work is tight. Accessible basement or garage-routed ducts are faster to reach and cheaper to seal.
- Age of the duct system. Older homes along the valley floor sometimes have duct board, unsealed seams, or flex duct that has sagged and crimped over time. Each of those adds repair steps before sealing can hold.
- How much is leaking. A couple of loose seams is a quick seal-and-check. A system with multiple disconnected runs needs to be traced run by run, and that takes longer.
- Insulation condition. Ducts running through unconditioned attic space lose heat fast through bare metal. If the wrap is failing, we’ll recommend fixing it while we’re already up there, since the labor is shared.
- Whole-home air quality equipment. Homes running Honeywell and Aprilaire whole-home systems need a technician who understands how the ductwork ties into filtration and humidification components. Our team is trained on both, so sealing and repair work is coordinated with the rest of your system rather than isolated from it.
- Containment. Repair work dislodges dust. We deploy Abatement Technologies air scrubbers during service so particulates stay contained instead of recirculating through the home – especially important for allergy-sensitive households.
One thing you won’t see us price in: there’s no trip charge or diagnostic fee added on top. The estimate is free, and the written quote is the price you pay. Our technicians have up to 12 years of experience and they’ll tell you plainly whether a leak is worth sealing, a run is worth repairing, or the system has aged past the point where sealing will hold.
How to Save on Duct Repair & Sealing
You can’t dodge a real duct problem, but you can keep the cost from climbing. A few practical steps:
- Fix leaks early. A single loose joint sealed now is a fraction of the cost of sealing a whole system later. Leaks worsen as conditioned air escapes and the HVAC runs longer to keep up.
- Bundle repair with cleaning. If your ducts are due for a cleaning, having repair and sealing done in the same visit means one setup, one containment rig, one trip through the attic. That’s a real labor savings. A duct cleaning Renton visit is the natural point to catch leaks before they get worse.
- Handle insulation while ducts are exposed. Adding or replacing duct wrap during repair work is cheaper than a separate trip.
- Don’t skip the small stuff. Register leaks and loose boots are cheap to fix and often cause more comfort complaints than a hidden attic disconnect.
- Ask for the written scope. A clear estimate showing what gets sealed, what gets repaired, and what stays as-is tells you where the money goes. That’s a good sign you’re getting a real answer.
Every estimate is free. Call (866) 942-6902 and we’ll take a look at the system and give you the number in writing. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday; a call outside dispatch hours is booked into the next opening, and we’re closed on Saturday.
Repair or Replace: Which Makes Sense for Your Ductwork?
For most homes in Renton, repair and sealing is the better value. A system with good layout, decent insulation, and a handful of failing joints is a sealing job, not a replacement. Replacement starts to make sense when runs are crushed in multiple places, the duct design is fundamentally undersized for the home, or the layout puts ductwork in unconditioned space in a way that can’t be corrected by sealing.
Here’s how we look at it: if the metal and flex are sound and the problem is joints and connections, we repair. If the ductwork has collapsed, been water-damaged, or something has chewed through it, those sections get replaced rather than patched. Our Air Duct Repair service line exists precisely because a lot of duct companies stop at cleaning and won’t take on structural repairs. We do both, so the recommendation is based on what the system needs rather than which service is easier to sell.
Whatever the outcome, you’ll get a written estimate and a clear reason. A Renton home’s ductwork deserves a straight answer.
Why Use Professional Equipment for Duct Repair & Sealing?
Duct repair work kicks up dust. Sealing and cutting into ducts releases fine particles that have settled over time, and standard shop vacuums don’t capture them – they just recirculate them through the house. That’s why we run professional-grade equipment on every job.
- Rotobrush rotary brush systems agitate duct walls mechanically, which lifts buildup before sealing so the repair holds to a clean surface.
- Nikro HEPA-rated vacuum equipment captures fine particulate at high efficiency throughout the work.
- Abatement Technologies air scrubbers run on-site during service to contain airborne contaminants.
- Compatibility with Honeywell and Aprilaire systems means sealing and repair are done with your whole-home air quality setup in mind, not in isolation.
Professional-grade equipment, not a shop vac with a logo on it. Our technicians have up to 12 years of experience, and they know what a system that’s been maintained properly looks like versus one that’s been neglected. Built for homes running Honeywell and Aprilaire systems.
When Duct Repair Stops Being Optional
Some duct problems are about comfort. Others are about safety and long-term cost, and those we don’t advise waiting on.
A fully disconnected return or supply run means the system is pulling air from a crawlspace or attic rather than from the rooms it’s meant to serve. That pulls unconditioned air, dust, and whatever else is up there into your living space. Crushed ducts cause the blower to work harder, which shortens the fan motor’s life. Leaky ducts running through a hot attic during a Renton summer send cooled air into the attic instead of your rooms, and the system runs longer and longer to compensate.
If any of that sounds familiar, it’s not worth putting off. We repair ducts – not just clean them. Same-day service is available when the schedule allows. Call (866) 942-6902 for a free estimate. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Duct Repair and Dryer Vent Safety
While we’re on ductwork, one related item worth naming: dryer vents. A clogged dryer vent is a documented fire-safety risk, and Renton households with tightly sealed, well-built homes are often surprised at how much lint accumulates. It’s the same kind of ducting, the same kind of airflow restriction, and the same professional equipment. Our Dryer Vent Cleaning service line exists because lint buildup in an exhaust duct is a hazard, not an inconvenience – not an upsell.
If your dryer takes two cycles to dry a load, or the exterior vent flap barely moves, it’s worth a look. We can assess the dryer vent on the same visit as duct repair work.
FAQs – Duct Repair & Sealing Cost
How much does duct sealing cost in Renton?
Duct sealing in Renton typically runs $350 to $1,000 for most single-family homes. Small joint-and-register sealing jobs land near the low end; full accessible system sealing runs toward the high end. The written estimate sets the final price. Call (866) 942-6902 for an exact quote – estimates are free.
Is it cheaper to repair ductwork or replace it?
Repair and sealing is almost always cheaper than replacing the system, usually by a wide margin. Replacement only makes sense when ductwork is crushed in multiple locations or the layout can’t be corrected through repair. Call (866) 942-6902 for a free estimate and a straight answer on which way your system leans.
Can you fix duct leaks the same day?
Same-day service is available when the schedule allows, and same-day work costs no more than any other time. We answer 24/7, dispatch runs from 7am to 7pm, Sunday through Friday, and a call outside that window is booked into the next opening. Call (866) 942-6902.
How much does it cost to repair a disconnected air duct in Renton?
Reconnecting a disconnected duct run in Renton typically costs $400 to $800. That covers re-seating and securing the run at the joint or boot, plus sealing the connection so it holds. Call (866) 942-6902 for an exact quote – estimates are free.
Why did another company quote me so much less for duct work?
A quote well below typical ranges usually means the scope is narrow: a quick vacuum with consumer equipment rather than a repair and sealing job done to a fixed standard. Duct repair and sealing done right requires professional-grade equipment, containment, and time. Compare the written scope, not just the number. Call (866) 942-6902 for a free estimate you can line up against it.
Get Your Duct Repair & Sealing Estimate
If your system isn’t moving air the way it should, the fastest way to know what it’ll cost is a written estimate. Call us at (866) 942-6902. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday; calls outside dispatch hours go into the next opening, and we’re closed on Saturday. The estimate is free, the price is upfront, and the scope is spelled out before anyone starts work.
We’re Duct Cleaning Renton, and we do duct cleaning, dryer vent cleaning, and duct repair for homeowners across the Renton area. Professional-grade equipment, containment-first cleaning, and technicians trained on the whole-home systems you’re protecting. Call (866) 942-6902 today for your free estimate.
Pricing reflects the Renton market as of 2026. Duct Cleaning Renton offers free estimates – call (866) 942-6902.
What Our Customers Say
"Did the dryer vent while they were here for a small add on price. The dryer now finishes a load in one cycle instead of two."
- Rachel Ziegler"They photographed every return and supply before starting and sent me the file afterward. No upsell to a sanitizing treatment I didn't need."
- Ryan Reed"Found a disconnected run in the crawlspace while they were in there and told me about it rather than cleaning around it."
- Xavier Whitfield