Whole-home duct cleaning
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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.
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Before
AfterHow Much Does Duct Repair & Sealing Cost in Brooklyn?
Duct repair and sealing in Brooklyn typically costs between $350 and $1,100, with most homes in Park Slope, Bay Ridge, and Williamsburg landing around $550 to $800 for targeted repairs. Full-system sealing with Aeroseal or mastic application in a larger brownstone or pre-war building can run $1,200 to $2,800 depending on access points and overall duct length. These are 2026 market ranges grounded in what Brooklyn homeowners actually pay, including the labor realities of working in older buildings with tight mechanical closets and finished basement ceilings.
Before any work starts, you should know the exact number. That is why Morton’s Air Duct Cleaning gives every homeowner a written price after an inspection and before a single tool comes out of the truck. No ranges after the fact, no surprise line items.
Key Takeaways: Duct Repair & Sealing Costs in Brooklyn at a Glance
- Typical repair job: $350 – $800 for patching holes, reconnecting separated sections, and sealing accessible seams
- Full-system sealing: $1,200 – $2,800 for Aeroseal or complete mastic-and-tape work across a whole Brooklyn home
- Most common driver of cost: access difficulty – finished basements, furred-in risers, and tight brownstone mechanical rooms all add labor hours
- Energy savings after sealing: most Brooklyn households see 10 – 20% lower heating and cooling bills with properly sealed ducts
- Free estimate: Mortons Air Duct Brooklyn provides a written quote at no cost – call (607) 536-9605
Duct Repair & Sealing Cost Breakdown (2026)
Here is how duct repair and sealing pricing actually shakes out in Brooklyn, line by line. The number you pay depends on how much of the system is leaking, how old the ductwork is, and how hard it is to reach.
| Service | Typical Brooklyn Price Range | What’s Included |
|---|---|---|
| Minor duct sealing (single room or trunk line) | $350 – $550 | Mastic or foil tape on 1 – 2 accessible seams, small hole patches, airflow test before and after |
| Targeted duct repair (one or two disconnected sections) | $400 – $800 | Reconnecting separated joints, replacing damaged flex connectors, sealing leaks at boots and collars |
| Full-system mastic sealing (entire home) | $1,100 – $2,200 | Every accessible seam and joint sealed, all supply and return runs inspected, pressure test at completion |
| Aeroseal duct sealing (whole system, aerosolized) | $1,500 – $2,800 | Aeroseal injection process, before/after leakage measurements, works on hidden ductwork too |
| Duct section replacement (rusted or crushed segment) | $250 – $500 per section | Cutting out damaged metal or flex duct, fitting new material, sealing both ends |
| Insulation wrap on exposed ductwork | $6 – $10 per linear foot | R-6 or R-8 fiberglass duct wrap, taped and sealed over repair areas |
Brooklyn prices run a bit higher than national averages because so many homes here are pre-war with ducts that run through masonry chases, behind plaster walls, or through basement ceilings that a previous owner finished around. In neighborhoods like Ditmas Park and Prospect Lefferts Gardens, where basements are commonly finished living spaces, the labor to open and restore access adds real cost. That is the honest reason some quotes in Brooklyn seem higher than the flat-rate numbers you see on national blogs.
The equipment also matters. Morton’s technicians use professional-grade tools from Rotobrush and Nikro for inspections and cleaning before sealing begins, which matters because sealing over dust and debris just glues the problem in place. A proper job starts with clean metal, then seals it.
What Affects Duct Repair & Sealing Pricing in Brooklyn
Nobody wants a vague “it depends” as an answer. These are the five factors that actually move your final number in Brooklyn, with the local context that matters.
- Age and style of the building. A 1920s limestone in Park Slope has ductwork installed decades before modern sealing standards existed. Rust, loosened joints, and old cloth-backed tape are common, and repair means working around lath-and-plaster walls. A newer condo in Downtown Brooklyn usually has more standardized metal duct and faster access, which keeps costs on the lower end of the ranges above.
- Access to the ductwork. If your ducts run through an unfinished basement in Marine Park, a technician can reach them easily and labor stays low. If they run behind a finished ceiling in a Williamsburg loft or through furred-in risers in a Cobble Hill townhouse, the job takes longer, and sometimes requires cutting and patching drywall. That labor is not optional – it is the difference between a $400 job and a $1,400 job.
- How much of the system is leaking. A single disconnected boot in a Bed-Stuy bedroom is a quick fix. Ducts that have separated in eight locations, including inside a wall cavity, are a much bigger job. A blower-door or pressure-pan test tells us exactly how much air is escaping before we touch anything, so you are not paying for guesswork.
- Material replacement versus sealing. Sometimes duct sections are too far gone to seal, especially in older Brooklyn homes where condensation has rusted the metal from the inside. Replacing a section costs more than sealing, but sealing over rusted-through metal buys you maybe a year before it fails again. We will tell you which is which, and show you photos of what we found.
- Whether drywall repair is needed. If we need to cut an access point to reach ductwork inside a wall or ceiling, you’ll pay for the drywall patch and repaint, either from us or from a separate contractor. In Brooklyn, that typically adds $150 to $500 to the total, depending on the size of the opening and the finish work involved.
Why Sealing Ducts Matters in Brooklyn Specifically
Brooklyn’s housing stock runs old, and old ducts leak. That is not an opinion – it is what our technicians see in buildings from Sheepshead Bay to Greenpoint every week. Leaky ducts mean the air you pay to heat in January escapes into wall cavities and behind finished basement ceilings before it ever reaches the living room. The same happens with cooled air in July and August.
For families with kids, the practical difference shows up in rooms that never quite reach the thermostat temperature. The nursery in the back of a Bay Ridge railroad apartment, or the third-floor bedroom in a Park Slope brownstone, often sits five to eight degrees off from the rest of the house. Sealing the ducts that feed those rooms fixes the imbalance at the source, not by cranking the boiler higher and paying more every month.
Pets add another layer. The amount of fur, dander, and dust that moves through leaking return ducts in a Brooklyn apartment with a dog or cat is real. Return-side leaks pull air from wall cavities and floor joist spaces, which means whatever is in those cavities ends up in your air stream. Sealing returns properly stops that before it starts. Our technicians use pro-grade equipment from Rotobrush and Nikro, and they run hoses carefully through homes where pets are napping and kids are doing homework. Shoe covers go on at the door, drop cloths go down under any work area, and the crew works around nap schedules when you tell us about them.
Duct Repair vs. Duct Replacement: Which One Do You Need?
Most Brooklyn homes do not need full duct replacement. Here is how to know, with real numbers.
Repair and sealing makes sense when the duct material itself is structurally sound, the home is under 30 years old or has had renovations, and the leaks are at joints, seams, and connections rather than through the body of the ducts. In that case, expect to spend $350 to $1,100 and be done in a single visit.
Replacement makes sense when ducts show heavy rust, collapsed sections, or water damage from condensation or leaks. That cost in Brooklyn typically runs $3,000 to $8,000 for a full system depending on the size of the home and the difficulty of access. Full replacement means opening walls and ceilings in most older buildings, which is why it is the last option, not the first.
We never push replacement when sealing does the job. A visual inspection with photos, plus a pressure test when the situation warrants it, gives you the evidence to decide. You keep the photos. You make the call.
The Morton’s Approach: Written Price, Then Work
We know exactly why you are reading a pricing guide: you have had a contractor show up, do the work, and hand you a number that did not match the estimate. It happens everywhere, and it happens in Brooklyn a lot, because servicing old buildings is unpredictable and some contractors price that unpredictability badly.
Morton’s Air Duct Cleaning has operated since 2005 as part of the Cedarwell family of independently owned companies. Every visit stars with the Cedarwell Care Promise: a written price before any work starts, every time, no exceptions. If additional work is needed mid-job, we stop and get your approval before proceeding. That is not a policy we announce when you ask – it is built into how every technician works.
And because the job is not done just because the ducts are sealed, every completed visit includes a photo of the clean-up before the crew leaves. You see the floors protected from the moment we walk in with shoe covers and drop cloths. You see the area left clean. You hold the proof, and the 365-Day Done Right Promise means if anything is not right, we come back and make it right. Full stop.
Our team is led by Paul Adeyemi, and every technician is background-checked and arrives in uniform. A live person answers our phone 24 hours a day – not a voicemail, not a chatbot.
How to Save on Duct Repair & Sealing in Brooklyn
Sealing ducts is not the place to cut corners, but there are legitimate ways to keep the total reasonable without sacrificing the quality of the job.
- Bundle sealing with duct cleaning. Ducts need to be clean before they are sealed, and doing both visits together costs less than scheduling them separately. Morton’s includes a cleaning pass with most sealing jobs using Rotobrush and Nikro equipment, so you are not paying for two mobilizations.
- Seal what is accessible now, plan for the rest. If ducts in a finished basement need drywall work to reach, we can often seal the accessible sections first and give you a separate, specific quote for the hidden sections when you are ready. You control the pace of spending.
- Take advantage of the free estimate. The inspection is free, and the written quote is yours to keep. Even if you do not book with us, you now have a specific number from a company that does this work in Brooklyn every day, and you can use it to compare against other quotes intelligently.
- Do not wait for the leak to become a failure. A small separation at a duct boot that costs $400 to fix becomes a collapsed section costing $1,800 if left for a few heating seasons. Catching it early costs less, and that is usually when a homeowner notices the problem anyway: right when the seasons change and one room stops keeping up.
- Call and ask about the current schedule. Our service areas across Brooklyn are planned for routing efficiency. If your neighborhood lines up with a day we are already working nearby, we pass the savings along in the quote. It never hurts to ask, and the call is free: (607) 536-9605.
How the Process Works: What to Expect When You Call
You call, a person answers, and we schedule a visit at a time that works for your household. When the crew arrives, here is what happens, in order:
- Walkthrough and inspection. We look at access points, check the visible ductwork, and identify where leaks are likely based on air pressure and visual evidence. In many cases we can show you exactly where the duct has separated or the old tape has failed.
- Written quote. Before anything is opened, removed, or sealed, you get a number on paper. What the work is, what it costs, what it includes. The price on the quote is the price you pay.
- Floor protection, then work. Shoe covers go on, drop cloths go down, and the crew sets up. If kids are home, we keep tools quiet and work areas contained. If pets are home, we use pet-safe products wherever we have a choice.
- Sealing and testing. We seal the leaks with the appropriate material – mastic, foil tape, or Aeroseal for full-system jobs – then run airflow tests to confirm the leakage is actually reduced. The number goes down, not just our opinion of it.
- Clean-up and photo. Before we leave, the work area is restored and we take a photo of the finished clean-up. You see the home the way we leave it, and you get a copy of that photo.
That is the whole process. No surprises at any point, and the 365-Day Done Right Promise means the job is not over until you say it is done right.
FAQs – Duct Repair & Sealing Cost
How much does duct sealing cost in Brooklyn?
Duct sealing in Brooklyn typically costs $350 to $800 for targeted work on accessible ducts, and $1,100 to $2,800 for a full-system seal with mastic or Aeroseal. The exact number depends on access difficulty and how much of the system leaks. Call (607) 536-9605 and we’ll inspect your ducts and give you a written quote at no cost.
Is it cheaper to repair ducts or replace them?
Repair is almost always cheaper – $350 to $1,100 for typical repairs versus $3,000 to $8,000 for full replacement in Brooklyn. Replacement only makes sense when ducts are rusted through, collapsed, or water damaged. Most homes we see in Brooklyn only need the repair and sealing work.
How much does Aeroseal cost in Brooklyn?
Aeroseal duct sealing in Brooklyn typically runs $1,500 to $2,800 for a whole system. It is the most complete sealing option and works on hidden ductwork inside walls and chases, which is common in pre-war buildings across the borough. The price includes before and after leakage measurements so you can see the actual improvement.
How long does duct repair and sealing take?
Most targeted duct repair and sealing jobs in Brooklyn take 2 to 4 hours. Full-system Aeroseal work usually runs 4 to 6 hours. If access requires drywall work, that adds time for the patch and finish, but the actual duct work itself is typically done in a single visit.
Will sealing my ducts lower my energy bills?
Most Brooklyn homeowners see 10 to 20% lower heating and cooling costs after sealing, especially in older homes where ducts run through unconditioned spaces like basements and external walls. The savings are highest in winter, when hot air escaping into a cold cavity is pure lost money. Call (607) 536-9605 for a free estimate and we can assess whether your ducts are the leaky point in your system.
Get a Written Estimate Before You Decide
You now know the real numbers for duct repair and sealing in Brooklyn – not national averages, but what homes in this borough actually pay. If your ducts are leaking, the next step is simple: call Mortons Air Duct Brooklyn at (607) 536-9605 and schedule a free inspection. A live person answers, the estimate is written, and you keep it whether or not we do the work.
If you want to understand more about how the process works before you call, read our guide to Duct Repair & Sealing in Brooklyn, or head back to the home page to see everything we do since 2005. Paul Adeyemi leads our Brooklyn team, and every job carries the 365-Day Done Right Promise. You will know the price before we start. You will see the clean-up before we leave. That is how it should work.
Pricing reflects the Brooklyn market as of 2026. Mortons Air Duct Brooklyn offers free estimates – call (607) 536-9605.
Written by Paul Adeyemi, Owner at Mortons Air Duct Brooklyn, serving Brooklyn since 2005.
What Our Customers Say
"Friendly, calm crew that clearly cared about the house. Covered their shoes, protected the floors, and double checked they'd closed up every vent cover properly. Would have them back."
- Omar Zaid"They cleaned our ducts and the dryer vent. What I appreciated was how careful they were moving furniture back exactly where it was. Took before and after photos of each vent too."
- Hiroshi Tan"Ducts and dryer vent both. They put runners down the whole hall and wore booties. Spotless after, and they showed me photos of what came out. Worth every penny."
- Bonnie Vo