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 Air Duct Repair Across Kenmore
Air duct repair in Kenmore typically runs $275 – $680 for a standard section rebuild, and most jobs are completed in a single visit. If you’re noticing musty air from the vents, a drop in airflow, or rooms that never reach the temperature on your thermostat, the problem is usually physical damage in the duct runs themselves, not the furnace. We know exactly what that looks like in Kenmore, because these crawl-space systems fail in predictable ways here. Call (980) 447-2498 and we’ll give you a written price before any work begins.
Why Linden Air Duct Cleaning Is Kenmore’s Preferred Air Duct Repair Company
Kenmore is a unique place to service because of what the lake and the river do to the air under these houses. You can’t see it from the street, but the crawl space on a 1960s ranch off 68th Ave NE is a different environment than the same floor plan in Bothell. We’ve run camera inspections in hundreds of these homes, and the pattern is consistent: damp flex jackets, separating collars, and mold where a branch duct sags. That’s why our Air Duct Repair team carries sheet metal, mastic, and HEPA filtration gear on every Kenmore call, not just a vacuum.
We’re part of the Threshold Group family, operating to the Threshold Verified standard since 2004. Every technician who comes to your door is background-checked, identity-verified, and arrives in a marked uniform with a photo ID badge. You’ll receive the tech’s name and photo before the visit, so you know who’s coming. Marcus Veale runs our air duct repair work with a simple rule: the price goes in writing before the job starts, and the repair carries a 365-Day Done Right Promise. If a covered repair fails within that year, we return and make it right at no charge.
Our crews serve Kenmore directly, coordinated from our Seattle office. We are not a phone center dispatching subcontractors from three counties away. The person who shows up works for us, answers to our standards, and has worked on Kenmore’s crawl-space duct systems before.
Ductwork Installation in Kenmore
Ductwork Installation in Kenmore generally becomes necessary when the existing runs are beyond repair: crushed return trunks, crumbling original sheet metal, or flex sections so contaminated they cannot be economically cleaned. In a 1960s or 1970s crawl-space ranch, that point arrives sooner than it does in newer construction, especially near the Sammamish River corridor. A full ductwork installation for a single-story Kenmore home typically runs $2,800 – $5,600 depending on the number of runs, access difficulty, and whether the air handler requires modification. We provide the exact figure in writing before any material is ordered.
Full System Replacement
When we replace ductwork, we pull the old runs first, then rebuild using sheet metal and properly sealed flex where appropriate. Every joint gets mastic and mesh tape, and we verify airflow at each register with a calibrated anemometer before we leave. This is not a job you want done twice.
Crawl-Space Rebuild Considerations
In Kenmore’s vented crawl spaces, we pay close attention to duct support and low-point drainage. A sagging run that touches damp ground will fail again, so we re-hang with proper strapping and slope any horizontal sections to prevent standing condensation from pooling in the low spots.
HVAC Duct Installation in Kenmore
HVAC Duct Installation in Kenmore means connecting a new or existing air handler to supply and return runs that actually fit the house. When a homeowner replaces a furnace but keeps original 1968 ductwork, the result is often poor static pressure and uneven heating, especially in split-levels near the lake where return air paths were undersized from the start. A targeted HVAC duct installation, where we add properly sized return ducting or replace a rusted supply trunk, typically runs $1,200 – $3,400 in Kenmore. The price depends on how much of the existing system is sound and how much has to be rebuilt.
Return Air Corrections
Older Kenmore homes frequently have a single small return in a hallway, which was adequate for original furnaces but undersized for modern systems. We can add a return run to improve system balance and reduce the negative pressure that pulls crawl-space air through duct leaks and into your living space.
Supply-Side Replacement
If your supply trunk has separated at the collar or shows corrosion from years of condensation, replacing that section restores airflow and eliminates a major entry point for damp crawl air. We match the new work to your existing system, but we do not patch a failing run when rebuilding it is what will actually last.
Trusted Brands We Service in Kenmore
We work with professional-grade equipment from Rotobrush and Nikro for cleaning, and we install air-quality components from Honeywell and Aprilaire when a repair calls for them. We’re also a Guardsman distributor for surface treatments on future mold resistance. Because Kenmore’s older systems frequently pair original sheet metal with retrofitted flex, we keep common fittings, collars, and mastic on the truck rather than ordering everything from a supply house. That means fewer repeat visits and less time with your crawl space open.
Common Air Duct Repair Problems We See in Kenmore Homes
- Separated flex at the crimped collar: In 1960s and 1970s crawl-space systems, the flex connects to a sheet-metal collar with a zip tie or clamp. After decades of humidity cycles, these connections pull loose, and the system starts drawing damp, moldy crawl air directly into the supply and return ducts instead of conditioned air.
- Standing condensation in low-point sections: Near the Sammamish River and Lake Washington shoreline, metal ducts spend about half the year in air above 60 percent relative humidity. Condensation collects in the low spots, soaks the insulation jacket, and creates exterior mold that a standard surface cleaning will not fix. The duct often needs to be cut out and rebuilt.
- Deteriorated mastic at original joints: The original sheet-metal seams were sealed with mastic that hardens and cracks over 50 years. Once that happens, rodent and insect debris can enter the air handler, and the branch looks fine from the register side until a camera inspection shows the breach.
- Crushed return trunks from crawl-space work: Plumbing and electrical contractors working in cramped Kenmore crawl spaces sometimes accidentally crush a return trunk. The system still moves some air, so the damage goes unnoticed even as the blower motor strains and rooms become uneven.
Pricing for Air Duct Repair in Kenmore, WA
Most Kenmore air duct repair jobs fall between $275 and $680 for a single section rebuild, with full ductwork installation running $2,800 – $5,600 on a typical single-story home. Partial HVAC duct installation usually lands between $1,200 and $3,400. What moves the number is access: a crawl space with 30 inches of clearance costs less to work in than one with 18. The condition of the existing duct also matters, because rebuilding around old, failed material takes more labor than connecting to a sound trunk. We give you one flat price per job in writing before work begins, and we honor it. Call (980) 447-2498 for a free estimate, and we’ll walk you through what your specific system actually needs.
We Also Serve Cities Near Kenmore
Linden Air Duct Cleaning handles air duct repair throughout the north end of Lake Washington, including Bothell, Mountlake Terrace, Lynnwood, and Woodinville. These neighboring communities share some of the same housing stock, but each has its own moisture patterns. If you’re just outside Kenmore, call (980) 447-2498 and we’ll confirm service in your area.
Serving Kenmore, WA - Our Local Coverage Area
We’re based in the Kenmore 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 Repair in Kenmore
For a crawl-space ranch in Kenmore, plan on a professional duct cleaning every three to five years, and expect a repair inspection on roughly that same interval. The lake-and-river-corridor moisture accelerates mold and mildew colonization inside ductwork compared to higher-elevation neighborhoods in Bothell, so the national “every 5 to 7 years” guidance does not match what we see here. After a cleaning or repair, we always provide a written report of what we found, including photos of areas we repaired or rebuilt. Call (980) 447-2498 to schedule an inspection.
Kenmore’s elevation near Lake Washington and the Sammamish River mouth holds crawl-space air above 60 percent relative humidity for about half the year, while Bothell’s higher elevation and better drainage keep crawl spaces drier. It is a real difference, not a sales talking point. Metal ducts in Kenmore condense on their surfaces during the wet season, and condensation feeds biological growth that does not appear in drier conditions a few miles east. When we see this, the repair is a rebuild: cut out the contaminated section, replace it with new sheet metal or properly sealed flex, and verify airflow before we leave.
We start with a camera inspection of the accessible duct runs, focusing on the return side where crawl-space air gets pulled in. You’ll see the images. If we find separations, mold-damaged flex, or failed joints, we quote a flat repair price in writing before any work begins. The repair itself usually takes two to five hours, depending on crawl-space access and the extent of the rebuild. During a recent job at a 1968 ranch off 68th Ave NE near the Sammamish River mouth, our tech camera-inspected a return that had pulled loose from its crimped collar, and the flex jacket behind it was damp with visible mold. We cut out the contaminated run, rebuilt it in sheet metal with sealed mastic joints, verified airflow at the air handler and blower motor, then ran negative pressure with HEPA filtration to remove the loose debris. The homeowners said the musty smell in the hallway closet disappeared within a week.
Yes, we can. Larger parcels in the northern and eastern parts of Kenmore often include detached garages, workshops, and outbuildings with their own ducted heating systems or dust-collection runs. These structures sit even closer to ground moisture than the main house, and their ductwork is frequently undersized or poorly sealed. We treat them with the same camera inspection and written-price process we use for the main residence. The only difference is that access is usually easier, which keeps labor costs on the lower end of our repair range.
Yes. Homes that burn wood in Kenmore load their ducts with far more particulate matter than homes on gas or electric heat, and MERV-rated filters are not a substitute for removing that material from the duct runs themselves. In rural parts of Kenmore with unpaved lanes and open land, we also see heavier dust loading from road traffic and soil. If you heat with wood or live on a gravel road, expect to move toward the three-year end of the cleaning-and-repair interval instead of the five-year end. A camera inspection will tell you exactly where you stand. Call (980) 447-2498 and we’ll send a technician with the equipment to do it right.
Written by Marcus Veale, Owner at Linden Air Duct Cleaning, serving Kenmore and the north Lake Washington area.