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 Repair Across Greenwich
Air duct repair in Greenwich typically runs between $350 and $2,800 depending on whether you need a single failed run rebuilt or a multi-system backcountry estate addressed. Most repair calls we handle in Greenwich are completed in one visit, with a written price confirmed before we start. If you’re noticing weak airflow, dusty rooms, or a musty smell that won’t clear, call us at (980) 447-2498 for a straight answer and a free estimate.
Greenwich is a town of two very different housing realities. The coastal neighborhoods along Long Island Sound deal with salt air and humidity that eats at metal duct joints. The backcountry north of the Merritt Parkway deals with something else entirely: decades of renovations layered onto homes built in the 1920s through 1950s, leaving duct systems that combine original sheet metal with forced-air retrofits and multi-zone add-ons. Repairing either type correctly means knowing which one you’re walking into before the first panel comes off. We do. Our Air Duct Repair team has worked every corner of this town, from Round Hill Road estates to Old Greenwich capes.
Why Linden Air Duct Cleaning Is Greenwich’s Preferred Air Duct Repair Company
Greenwich homeowners don’t want a stranger wandering through the house guessing at the problem. That’s exactly why Marcus Veale built our process around verification. Every technician who arrives at your door is background-checked and identity-verified under the Threshold Standard. Before the visit, you get the tech’s name and photo. At the door, they show a photo ID badge. No unmarked vans, no anonymous helpers. This matters twice as much in Greenwich, where spending a full day inside a backcountry estate or a waterfront condo means being around someone you can trust.
We’ve been part of the Threshold Group family since 2004, and Greenwich homeowners consistently tell us the same thing: the written price before work starts is what convinced them to call. It’s not a teaser. It’s the actual number. And every repair carries the 365-Day Done Right Promise in writing. If the repair fails within a year, we return and make it right at no charge. That’s not a marketing line; it’s on every job sheet.
Our dispatchers coordinate Greenwich service from our Hartford office, but crews work locally and know the town’s roads, parking restrictions, and building access quirks. When a Riverside homeowner calls about a musty supply duct, we already know what the salt air does to plenums within a few blocks of the water.
Air Duct Replacement in Greenwich
Air Duct Replacement in Greenwich most often means removing a failed section of duct and installing new sheet metal or flex that’s correctly sized, sealed, and pressure-tested. It’s not a whole-house job in most cases. In Greenwich’s coastal capes, we replace rusted sections where salt-laden air has corroded joints to the point of leakage. In backcountry estates, we replace abandoned or improperly spliced runs left behind by decades of renovations. A single-run replacement in Greenwich typically costs $400 to $1,200, while a full trunk-line rebuild in a larger home can reach $2,800 or more.
Coastal Corrosion Replacement
Homes within a mile of Long Island Sound in Old Greenwich, Riverside, and Cos Cob absorb a lot of airborne salt. It settles inside unconditioned duct runs and eats at galvanized seams. We inspect joints with a camera, remove the compromised section, and rebuild it with properly sealed sheet metal that resists future corrosion.
Backcountry System Rebuilds
On estates along Lake Avenue and Round Hill Road, we often find a single HVAC system pushing through ductwork installed across three different decades. We’ll replace the failed run, match it to the existing static pressure, and seal the transition points that were never done correctly in the first place.
Ductwork Repair in Greenwich
Ductwork Repair in Greenwich covers everything from sealing open plenums and reconnecting separated joints to rebuilding collapsed sections and patching torn flex. The town’s split housing stock means the job varies sharply. A Cos Cob colonial might need a section of return duct resealed after years of coastal humidity loosened the connections. A backcountry estate might need a 6-inch supply run rebuilt through a sealed-off 1920s plaster cavity. Typical ductwork repair in Greenwich runs $300 to $1,800, with whole-system resealing and testing on multi-wing estates reaching $3,500.
Joint Sealing and Leak Repair
Greenwich homes built before forced-air retrofits often have duct joints that were never properly mastic-sealed. Air leaks into unconditioned attics and crawl spaces, pulling humidity and debris into the living space. We locate the leaks, seal them with mastic and aluminum tape, and verify with a pressure test.
Repair of Abandoned or Failed Runs
At a 1930s expanded colonial on Round Hill Road, our crew found a failed 6-inch supply run that had been cut and abandoned during a 1980s addition, leaving an open plenum pulling attic air into the second-floor bedrooms. We used camera inspection to trace the run, rebuilt it with properly sealed sheet metal, and pressure-tested it to confirm no leakage into the original plaster cavity. The homeowner had been running a portable HEPA filter for years without realizing the return was open. That’s the kind of repair you only find in Greenwich’s renovation-layered homes.
Trusted Brands We Service in Greenwich
We work with professional-grade equipment from Rotobrush and Nikro, and we stock seals, mastic, sheet metal, and flex that match what’s already in Greenwich homes. Whether your duct system runs through original 1950s galvanized trunk lines or modern high-velocity flex, our techs have the parts on the truck to complete most repairs same-day. We also specify air-quality components from Abatement Technologies and Guardsman where a Greenwich homeowner wants filtration added during a repair.
Common Air Duct Repair Problems We See in Greenwich Homes
- Salt-corroded joints near the Sound. Homes in Old Greenwich, Riverside, and Cos Cob sit close enough to Long Island Sound that airborne salt settles into duct seams and accelerates rust. We replace corroded sections and seal the transition points before they leak again.
- Abandoned runs in renovated backcountry homes. Greenwich’s backcountry estates often have four or five separate HVAC systems with duct runs passing through sealed-off original plaster cavities. Renovation waves leave open plenums and dead-end runs pulling attic or wall air into living spaces.
- Mismatched duct sizing from decades of additions. A 1950s trunk line spliced to a 1990s flex run creates pressure imbalances. You’ll feel weak airflow in one wing and noisy registers in another. We rebuild the transition and restore balance.
- Shared dryer vent stacks in multi-unit buildings. Greenwich condo buildings and apartment conversions often share a single dryer vent stack. Lint from one unit pushes into a neighbor’s duct, creating blockages no single-tenant cleaning resolves. We repair the termination and address the whole stack.
Pricing for Air Duct Repair in Greenwich, CT
A single duct run replacement in Greenwich typically costs $400 to $1,200. Sealing multiple leaking joints runs $300 to $800. A full trunk-line replacement or multi-system backcountry repair reaches $1,800 to $3,500. What moves the number: how many runs are involved, whether we’re opening walls versus working from an accessible chase, and how much of the duct passed through unconditioned space. We give you one flat price per repair in writing before any work begins. Call (980) 447-2498 for a free estimate and we’ll give you a real number, not a range that grows once we’re on-site.
We Also Serve Cities Near Greenwich
Our crews work throughout Air Duct Repair in Greenwich and the surrounding communities, including Cos Cob, Riverside, Old Greenwich, and Stamford. If you’re a few miles up the Post Road or just over the town line, call us and we’ll schedule a visit at the same written-price standard.
Serving Greenwich, CT - Our Local Coverage Area
We’re based in the Greenwich 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 Greenwich
We open walls where necessary. In backcountry estates built in the 1920s through 1950s, duct runs often pass through sealed-off original plaster cavities that were never designed for access. Our techs use camera inspection to trace the run, then open the minimum wall section needed to rebuild or reseal it. We always confirm the repair with a pressure test before closing. Call (980) 447-2498 and we’ll tell you honestly whether your estate job needs wall access or can be done from an existing chase.
Yes, and this is one of the most common calls we get from Old Greenwich condo buildings. Shared dryer vent stacks push lint between units, and a blockage in one unit’s section can back up into a neighbor’s duct. We repair the termination point, clear the entire shared stack, and document the work so you and your neighbor know what was done.
In Riverside and other shoreline neighborhoods, salt-laden coastal air accelerates mold colonization inside supply and return plenums, especially where runs pass through unconditioned crawl spaces. A cleaning removes surface debris, but if the plenum has standing moisture or the duct joints are leaking humid air into the run, the smell returns. We find the moisture source, reseal the joints, and treat the plenum. Then we give you a written guarantee that covers the repair for 365 days.
Yes. Single-run replacement is the most common repair we do in Greenwich. We remove the failed section, match the new material to the existing system’s static pressure, and seal both transition points. A single-run replacement typically runs $400 to $1,200 in Greenwich, depending on access and run length.
We coordinate building access before the visit and arrive in a standard service van that fits most Greenwich parking situations, including tight backcountry driveways and condo lots. We bring the equipment in efficiently, work while respecting building quiet hours, and leave the unit as we found it. The written price still applies, and the work still carries the 365-Day Done Right Promise.
Call for a Free Air Duct Repair Estimate in Greenwich
You’ll get one flat price in writing before any work starts. You’ll know exactly who’s coming to your door, with a name, photo, and photo ID badge. And if the repair doesn’t hold, we come back free for a full year. Call (980) 447-2498 to schedule a free estimate in Greenwich, CT.
Written by Marcus Veale, Owner at Linden Air Duct Cleaning, serving Greenwich since 2004.