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 Kensington
Air duct repair in Kensington typically runs $350 – $950 for common failures like collapsed flex takeoffs, disconnected trunk joints, and leaking return plenums. Most jobs finish in a single visit, and the work carries our 365-Day Done Right Promise. If you’re noticing weak airflow from upstairs registers, musty air when the blower kicks on, or dust accumulating fast in a mid-century ranch off Kensington Road, call (980) 447-2498. We know these houses. We’ve been inside their basements.
Why Linden Air Duct Cleaning Is Kensington’s Preferred Air Duct Repair Company
Kensington homes are uncommonly consistent: capes, ranches, and split-levels built between roughly 1955 and 1985, sheet-metal duct systems routed through unconditioned basements that stay damp for months at a time. That sameness works in your favor. When a technician has crawled through a hundred of these basements, he knows before opening the access panel where the junctions are, which seams fail first, and where flex takeoffs from 1990s gas conversions were spliced over original galvanized trunk lines.
Marcus Veale, who leads our Air Duct Repair team, insists on camera inspection before any repair quote is written. That means the price you approve is for the actual problem, not a guess. Every Kensington job receives a written price before work begins, a written guarantee on the repair, and a free second visit if the repair doesn’t hold. Calls are answered by a live person 24/7. No voicemail loops.
Ductwork Installation in Kensington
Ductwork Installation in Kensington means replacing sections of galvanized trunk or branch runs that are too corroded, crushed, or undersized to repair. In these mid-century homes, original trunks were sized for oil-era forced-hot-air furnaces, which pushed lower static pressure than today’s high-efficiency blowers. A full trunk replacement in Kensington typically runs $1,800 – $4,200 depending on linear footage and basement accessibility. Partial branch replacement lands between $700 and $1,600.
When Replacement Beats Repair
Galvanized duct that’s rusted through, separated at longitudinal seams, or packed with decades of oil-combustion residue often costs more to patch than to replace. We’ll tell you which side of that line you’re on. The camera doesn’t lie, and neither do we.
Fixing What the Last Retrofit Left Behind
During 1990s furnace upgrades, contractors often spliced flex takeoffs directly over original trunk openings and sealed them with whatever tape was on the truck. That tape fails. The collar loosens. The flex sags, kinks, and collapses. If we’re installing new rigid branches off an original trunk, we band-clamp and seal every junction so it holds.
HVAC Duct Installation in Kensington
HVAC Duct Installation in Kensington often happens when a homeowner finally converts from a 40-year-old oil furnace to a heat pump and discovers the old duct system can’t move enough air. We see this constantly in ranches along Farmington Avenue and in split-levels near High Road. New HVAC duct installation in Kensington for a typical single-system home runs $2,800 – $6,500. The range reflects how much of the original layout we can reuse versus replace.
When Your Old Ducts Starve a New System
Modern air handlers and heat pumps are more sensitive to static pressure than the old belt-driven oil furnaces ever were. If your return side can’t pull enough air, the blower works harder, runs louder, and fails earlier. We calculate required airflow per room before cutting any metal.
Sealing for Kensington Basements
New duct in an unconditioned Kensington basement needs real sealing. Not foil tape. We use mastic at every joint and collar, because Central Connecticut’s humid continental summers will find every gap in a return-air run and feed moisture straight into it. That moisture is what turns a dusty duct into a smelly mess by September.
Trusted Brands We Service in Kensington
Our Kensington crews work with professional-grade equipment from Rotobrush and Nikro for camera inspection, negative-pressure extraction, and HEPA filtration. For air-quality components, we use products from Aprilaire and Abatement Technologies, including inline filter housings and UV systems where a basement’s persistent humidity warrants it. Parts for Kensington jobs are stocked in our Bay Area dispatch center and arrive with the technician. You won’t wait a week because a collar or a section of flex had to ship from somewhere else.
Common Air Duct Repair Problems We See in Kensington Homes
- Collapsed 1990s flex takeoffs over original galvanized trunks. Gas-conversion retrofits spliced flex directly onto trunk openings and sealed them with failing tape. The flex sags, kinks, and collapses. This is the single most common repair in Kensington.
- Leaking return-air seams in damp basements. Kensington’s position in the Connecticut River Valley means basement humidity is persistently elevated between May and October. Return ducts pull that moist air into the system through unsealed seams, feeding mold inside the duct lining.
- Undersized returns starving modern air handlers. Oil-era duct systems were sized for lower static pressure. After a conversion to gas or heat pump, the blower can’t pull enough return air. You’ll hear it working hard and feel weak airflow upstairs.
- Debris-packed junctions at retrofit connections. Where flex meets trunk, decades of oil-combustion residue, construction debris, and lint build up. The junction sits low in the basement and was never sealed properly after installation, so it keeps collecting.
Pricing for Air Duct Repair in Kensington, CA
We Also Serve Cities Near Kensington
Beyond Kensington, our crews regularly handle Air Duct Repair projects in nearby communities across the Bay Area and Southern California. We serve homeowners in Los Angeles, San Diego, San Jose, and San Francisco. Same written pricing, same verification standard, same 365-Day Done Right Promise on every job.
Serving Kensington, CA - Our Local Coverage Area
We’re based in the Kensington area and know this community well, offering Dryer Vent Cleaning - Kensington and more. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Repair in Kensington
How often should ducts in a Kensington ranch actually be cleaned?
Every 3 to 5 years if the home still runs original galvanized trunk lines through an unconditioned basement, given Kensington’s elevated basement humidity from spring through fall. If you converted to a heat pump recently, clean before the new system goes in, then every 4 years after. Homes with shedding pets or dusty unpaved-road exposure off High Road may want 3-year intervals. Our camera inspection confirms actual loading before we recommend a date. Call (980) 447-2498 to schedule.
Why does my basement return duct smell musty even after a cleaning?
Because the return run is pulling moist basement air through unsealed seams, re-contaminating the duct interior within weeks of a cleaning. In Kensington, the persistent Connecticut River Valley humidity feeds this constantly. Unless the seams and junctions are sealed after cleaning, the musty smell returns. Our repair service includes sealing all accessible return-side connections with mastic, not tape. Call (980) 447-2498 and we’ll camera the entire return side.
A 1990s flex takeoff was added to my original trunk – can it be repaired or does it need replacing?
If the flex is collapsed, kinked, or torn, replacing it is the honest call. Repairing a failed flex section with tape or a patch almost never holds beyond a season. We cut the old run out, band-clamp a properly sized replacement onto the original trunk, and seal it correctly. In Kensington, this repair usually runs $350 – $650. You’ll know the exact figure before we start. Call (980) 447-2498.
Do you use NADCA standards on older Kensington ductwork?
Yes. Every cleaning and repair follows NADCA protocols for source removal, negative-pressure extraction, and system inspection. Our Rotobrush and Nikro equipment meets or exceeds NADCA’s performance expectations for residential duct systems. On Kensington’s older galvanized trunks, we always camera-inspect before cleaning to identify collapsed sections, failed junctions, and areas where the metal itself is corroded beyond cleaning. You see the footage. You decide.
What MERV rating should I run after a duct repair in this climate?
For Kensington homes with basswood, oak, and maple pollen plus humid-basement spore counts, a MERV 11 filter balances filtration and airflow well. MERV 13 is sensible if anyone in the house has allergies or asthma. But check your system’s static pressure first: if the return ducts are undersized from the oil era, a MERV 13 can strangle the blower. We’ll tell you what your rebuilt system can actually push. Call (980) 447-2498 and we’ll inspect it.
One More Thing About Kensington Ductwork
Kensington’s mid-century ranches and splits were built with galvanized trunk lines sized for oil-fired forced-hot-air furnaces. Connecticut has long been one of the country’s heaviest users of home heating oil, and in many Kensington basements, the original furnace is long gone but its trunk line remains, now duct-taped to 1990s flex takeoffs installed during gas conversions. Those junction points sit low, in unconditioned basements where summer humidity sits at 65 to 75 percent for weeks. They collect decades of oil-era debris, then stay wet enough for microbial growth the original trunk never had. That’s not a generic problem. It’s a Kensington problem. We see it every week. We were called to a 1968 split-level off Kensington Road where a second-floor register was barely moving air. Camera inspection found a collapsed 1990s flex takeoff installed directly over the original galvanized trunk during a gas conversion, packed with oil-era debris and lint. We cut out the failed takeoff, band-clamped a properly sized run off the trunk, and pulled the whole supply and return system under negative pressure with HEPA filtration until the air handler side ran clean.
Licensed and insured. Written price before work starts. Written guarantee on every repair. Marcus Veale and the team at Linden Air Duct Cleaning have been doing this work since 2004, to the Threshold Verified standard. Every technician is background-checked, identity-verified, and shows a photo ID badge at your door. The tech’s name and photo arrive before the visit. No surprises at the door. No surprises on the invoice.
Call (980) 447-2498 for a free estimate. A live person answers, day or night.
Written by Marcus Veale, Owner at Linden Air Duct Cleaning, serving Kensington residents with verified air duct repair and installation.