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
AfterTrusted Duct Repair & Sealing for New York City Homeowners
Duct repair and sealing in New York City typically costs $450 to $1,850 depending on the extent of the leak and the type of ductwork in your home. Most repairs are completed in a single visit. The work stops conditioned air from leaking into wall cavities and crawl spaces, which means your heating and cooling dollars actually reach the rooms you live in. CleanRun Air Duct Cleaning has handled duct repair and sealing across all five boroughs since 2013, with a written price before any panel comes off and a documented photo record of every duct run when the crew leaves, and we also provide Duct Repair & Sealing in Huntington Park. If you suspect a leak, call (806) 606-6902.
What Our Duct Repair & Sealing Service Includes
Duct Sealing
Duct sealing is the process of closing the gaps, cracks, and separated joints in your existing ductwork so conditioned air stops escaping. In New York City homes, we find the worst leakage in older pre-war buildings where original ducts have shifted over decades and in newer renovations where a previous contractor rushed the connection between the plenum, the main distribution box, and the duct runs. CleanRun Air Duct Cleaning seals every accessible joint with mastic sealant or foil tape rated for HVAC use, then verifies the result with a pressure test so you see a measurable improvement, not just a claim.
Flex Duct Repair
Flex duct is the flexible, insulated tubing you’ll find in many NYC apartments and townhomes, and it fails in predictable ways: kinks, sagging runs, torn outer jackets, and disconnected fittings. A kinked flex duct can cut airflow to a room by 40% or more, which is why a room at the end of the run never quite reaches temperature. We replace damaged sections and re-support sagging runs properly, and we photograph the before and after so you can see exactly what was repaired inside your walls and ceilings.
Metal Duct Repair
Metal ductwork, common in older Manhattan buildings and larger homes in Queens and the Bronx, develops rust, separated seams, and loose connections over time. Repairing metal ducts requires more than tape: sections often need to be re-crimped, re-sealed, or in some cases replaced with matching gauge sheet metal. CleanRun Air Duct Cleaning fabricates replacement sections on-site when needed and seals every seam with the correct mastic, because a metal duct that leaks at the seam is still losing air even if it looks intact.
Duct Insulation
Uninsulated or poorly insulated ducts in unconditioned spaces like attics, basements, and exterior chase walls lose heat in winter and gain it in summer before the air ever reaches a register, the vent cover in your floor or wall. In New York City, the temperature swing between a hot attic in July and a cold basement in January makes insulation a real efficiency issue, not a comfort luxury. We wrap ducts with insulation rated to local energy code and seal the outer jacket so condensation doesn’t form on the duct surface during humid summers.
Mastic Sealant
Mastic is the thick, paste-like sealant that HVAC professionals use instead of duct tape, and it’s the only sealant we use on metal ducts because it hardens to a durable, airtight bond. Duct tape, despite the name, dries out and fails within a few years, which is why you’ll see peeling tape on ducts in nearly every older NYC home we inspect. CleanRun Air Duct Cleaning applies mastic to every accessible joint and seam, then documents the application in your photo record so you can verify the work was actually done, not just billed.
Air Leak Repair
Air leak repair targets the specific points where conditioned air escapes your system, which we locate using a combination of visual inspection, pressure testing, and in some cases smoke testing to see exactly where air moves. Common leak points in New York City homes include the connection where ducts meet the register, the seam where the plenum attaches to the air handler, and any joint that was taped rather than sealed during original construction. Once located, we seal each leak with the correct material for the duct type and re-test to confirm the leak is closed.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service for Duct Repair & Sealing
We work on duct systems connected to all major HVAC equipment brands, and we’re frank about what that means: the ductwork is independent of the furnace or air conditioner brand, so our repair approach depends on the duct material and the equipment configuration, not the name on the cabinet. That said, we have extensive hands-on experience with systems from Carrier, Trane, Lennox, Rheem, and Goodman, and our technicians know the specific duct connection points and airflow requirements of each.
On the equipment side, we run professional-grade inspection cameras and negative-pressure extraction equipment from Rotobrush and Nikro, which is what allows us to show you the inside of your ducts rather than just describing them. For commercial-adjacent and larger residential systems, we also work with Abatement Technologies equipment where negative-pressure containment is required. Whether your system is a Carrier in a pre-war co-op or a Goodman in a Staten Island split-level, the repair process is the same: inspect, document, price in writing, and seal to spec.
BeforeAfterSigns You Need Duct Repair & Sealing Right Now
- Rooms that never reach the thermostat setting. If one bedroom is always five degrees off from the rest of the house, the problem is often a disconnected or kinked duct run feeding that room. The leak means conditioned air is being dumped into a wall cavity or attic instead of the room you’re trying to heat or cool. This is the most common repair we find in New York City homes, and it’s usually fixable in a single visit.
- Dust accumulating unusually fast after cleaning. When ducts leak, they pull air from inside wall cavities, attics, and crawl spaces, and that air carries whatever is in those spaces, often insulation particles and decades of construction dust. If you’re dusting twice a week and still seeing a film on surfaces, the duct system is likely pulling from the wrong places. Sealing the leaks stops that pathway.
- Higher energy bills with no change in usage. Duct leakage of 20% to 30% is common in older NYC homes, and every percentage point is heating or cooling you paid for but never received. If your Con Edison or National Grid bill is climbing while your thermostat habits haven’t changed, leaking ducts are a prime suspect. A sealed duct system typically pays for itself in reduced energy costs over several years.
- Rooms above the garage or over a crawl space are always cold. Ducts running through unconditioned spaces lose heat through the duct walls before the air ever reaches the register. This is a classic issue in Queens and Staten Island homes with ducts in garage ceilings. Adding proper insulation to those duct runs and sealing the connections can dramatically change how those rooms feel in January.
- You can hear air moving inside walls or ceilings. A whistling or rushing sound behind drywall when the system runs usually means air is escaping through a separated joint or a punctured duct. It’s not a harmless quirk; it’s your conditioned air leaving the system before it reaches a room. We locate the source with a camera and repair it directly.
Our Duct Repair & Sealing Process - Step by Step
- 1
Inspection and camera documentation. We start by inspecting the accessible ductwork and sending a camera through the runs we can reach. You’ll see what we see: the disconnects, the gaps, the kinks, the dust accumulation. This camera record is the baseline of your Documented Photo Record, and it’s yours to keep whether or not you approve any repair work.
- 2
Written price before any work starts. Under Haven Standard Clause 1, every job gets a written price before a single panel comes off. The price covers the scope we identified during inspection, and if we find something additional during the repair, we stop and put the new scope in writing before proceeding. There is no version of this where you get a surprise invoice.
- 3
Sealing and repair at the source. We seal leaks at the joint, not by wrapping tape around the outside of an insulated duct and hoping. Depending on what the inspection showed, this step includes mastic application, flex duct replacement, metal section fabrication, or insulation wrap, done properly so the repair lasts years, not months.
- 4
Post-repair verification. After the repairs are complete, we re-test the system and photograph every repaired duct run again. You receive a before-and-after photo record of the inside of your ducts, delivered digitally, so you can see the difference between the before state and the after state without taking our word for it.
- 5
Written warranty and photo record delivered. Every CleanRun Air Duct Cleaning job concludes with your documented photo record and your 365-Day Done Right Promise in writing. If anything we repaired fails within a year, we make it right. This is a written guarantee, not a phone-tree policy that requires manager approval.
How Much Does Duct Repair & Sealing Cost in New York City?
A typical duct sealing job in New York City runs $450 to $900 for accessible ductwork with moderate leakage. Full flex duct replacement in a larger home or unit typically runs $900 to $1,850 depending on the number of runs and how difficult the chase access is. Metal duct repair with custom fabrication falls in the $650 to $1,400 range in most NYC homes. These are whole-system prices, not per-vent prices, and they include inspection, repair, sealing, documentation, and the written 365-Day Done Right Promise, with similar service available as Duct Repair & Sealing - South Gate.
What affects the price most is access. Ducts in an open basement ceiling are cheaper to reach than ducts in a finished ceiling or a narrow attic. The second factor is duct material: flex duct is faster to replace, while metal repair can require fabrication time. The third is severity: a single separated joint costs less than system-wide seam sealing. Every CleanRun Air Duct Cleaning estimate is written and itemized before work starts, so you’ll see exactly what you’re paying for and why. And if you have a written estimate from another company, we’ll put our number next to it as a Free Second Opinion.
Duct Repair & Sealing Near New York City - Our Service Area
We provide duct repair and sealing throughout New York City, including Manhattan, Brooklyn, Queens, The Bronx, and Staten Island. Our technicians work in every borough daily, and we understand the difference between a pre-war co-op in the West Village and a 1990s split-level in Sheepshead Bay. If you’re outside the five boroughs, we also serve parts of Westchester and Nassau County. For homeowners in other metro areas, we offer the same service and standard in Duct Repair & Sealing in Los Angeles and Duct Repair & Sealing in Chicago. Or visit our home page to see all locations.
Serving New York City, NY - Our Local Coverage Area
We’re based in the New York City area and know this community well, and we also offer our Duct Repair & Sealing in Los Angeles. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions - Duct Repair & Sealing in New York City
Duct repair and sealing is the process of closing leaks, gaps, and disconnections in your HVAC ductwork so conditioned air reaches the rooms it’s meant to serve. In practice, it means sealing separated joints with mastic, replacing damaged flex duct sections, and insulating ducts in unconditioned spaces. The result is better room comfort, less dust, and lower energy waste from air escaping into attics and wall cavities, and we offer the same quality as Duct Repair & Sealing in Bell.
Most residential duct repair and sealing jobs in New York City are completed in one visit lasting 3 to 6 hours, depending on the number of duct runs and access difficulty. A straightforward sealing job on accessible basement ducts is usually on the shorter end. Multiple flex duct replacements or metal fabrication in finished ceilings can extend to a second day, which we’ll state in your written estimate before work begins.
Expect to pay $450 to $1,850 for residential duct repair and sealing in New York City, with most jobs landing between $650 and $1,200 for a typical single-family home or larger apartment. The final price depends on how many leaks we find, the duct material, and how difficult the ducts are to access. Every CleanRun Air Duct Cleaning estimate is written and itemized before work starts, so you’ll never face an open-ended invoice. Call (806) 606-6902 for an exact written quote.
Yes, we service ductwork connected to all major HVAC equipment brands, including Carrier, Trane, Lennox, Rheem, and Goodman. The repair approach is determined by the duct material and configuration, not the equipment brand name, but our technicians are trained on the airflow specifications and duct connection points for each major manufacturer. If you have a specific system, tell us the model when you call and we’ll confirm the details.
We answer every call with a live person, 24/7, and we’ll schedule your duct repair as quickly as our calendar allows. A fully disconnected duct dumping all your conditioned air into an attic is a real urgency, and we treat it that way. For most repair needs, we’ll get you on the schedule promptly and send a uniformed technician with a written price and camera documentation.
Every duct repair and sealing job from CleanRun Air Duct Cleaning carries the 365-Day Done Right Promise in writing. If the work isn’t right within a year, we make it right. This is a written guarantee delivered with your photo record and invoice, not a policy that lives in a call center script or requires a manager to approve.
Clear access to the furnace or air handler, plus any attic hatch or basement area where ducts run, is the most useful preparation. We’ll need to reach the plenum and the main duct runs, so moving stored items away from those areas speeds things up. We handle floor protection and cleanup as part of the job, and you don’t need to be home for the entire visit, although you’re welcome to watch the camera inspection.
Schedule Your Duct Repair & Sealing Service in New York City Today
If your ductwork is leaking, every month of delay is money leaving through your walls and ceiling. Call (806) 606-6902 to schedule a duct inspection with a written price before any work starts, a camera-based photo record of what we find, and the 365-Day Done Right Promise in writing. The estimate is free, the price is fixed before we begin, and the documentation is yours to keep. Duct Repair & Sealing in New York City is what we do, and we’ve done it since 2013.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning, serving New York City since 2013.