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 Duct Sealing Across Jersey City
Duct sealing in Jersey City typically runs $450 – $1,200 for a whole-home system, with most rowhouse jobs falling in the $550 – $850 range and high-rise PTAC or stacked-shaft work starting around $400 per unit. We seal ducts across Jersey City from Bergen-Lafayette to the waterfront, and scheduling is coordinated from our New York City office with local crews who know the building stock here. Call (361) 326-5060 for a written estimate before any work starts.
We’ve been in this trade since 2004, and Jersey City’s mix of housing keeps us sharp. The century-old brick rowhouses in the Heights and McGinley Square have original sheet-metal ducts with decades of freeze-thaw damage. The glass towers on the Hudson have stacked HVAC shafts where one unit’s leak becomes everyone’s problem. Two completely different failures. Two completely different fixes. Our Duct Sealing team handles both.
Why Hollis Air Duct Cleaning Is Jersey City’s Preferred Duct Sealing Company
Hollis is part of the Garrison Partners family, and every Jersey City job runs on The Garrison Standard: arrive inside the quoted window, price in writing before touching anything, finish by the book, leave the site clean. No exceptions.
Our 365-Day Done Right Promise covers every sealing job in writing. If a joint we sealed fails within a year, we come back and make it right at no charge, including a free second visit. That’s not a slogan; it’s on the invoice.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. Phones are answered by a live person 24 hours a day, seven days a week. No voicemail loops, no callback queues.
We price by the system, not by the vent. The number you agree to is the number on the final bill. We’ve seen too many Jersey City homeowners burned by low teaser quotes that balloon once the van is in the driveway. That doesn’t happen here.
Duct Repair in Jersey City
Duct Repair in Jersey City is usually about fixing what time and freeze-thaw cycles have broken in older homes. Original sheet-metal joints in Bergen-Lafayette and Heights rowhouses crack and separate after decades of expansion and contraction. Unheated rear-extension branches pull apart at seams. Crushed or disconnected runs get found during cleaning jobs. We repair these with mastic and mesh reinforcement, metal screws where the gauge allows, or full section replacement when the damage is too far gone.
A typical duct repair in Jersey City runs $300 – $650 for a localized fix, or $700 – $1,400 if we’re rebuilding multiple branch runs in a larger system. Every repair gets camera-verified before we close up.
Cracked Sheet-Metal Joints
Original ducts in Jersey City’s pre-war rowhouses were joined with snap-lock seams and minimal sealant. After eighty to a hundred winters, those joints open up. We cut back to sound metal, re-form the seam, and seal with fiberglass-reinforced mastic rated for the temperature swing.
Disconnected Branch Runs
Rear extensions added in the 1940s and 1950s often used lighter-gauge metal that fatigues faster than the main trunk. When a branch drops off entirely, heated air dumps into the wall cavity. We reconnect with proper supports and seal the joint so it stays put.
Air Duct Sealing in Jersey City
Air Duct Sealing in Jersey City is the difference between a system that moves air through your rooms and one that heats your walls, your basement, or your neighbor’s unit. We seal supply and return ducts with mastic compound and fiberglass mesh, mechanical fasteners where needed, and pressure-test afterward to verify the fix. In rowhouses, the priority is usually those rear-extension branches and the main trunk connections. In waterfront high-rises, we focus on register boots, PTAC sleeves, and points where stacked shafts allow cross-floor air migration.
Whole-system air duct sealing in Jersey City typically costs $550 – $1,200 depending on access, system size, and how many problem points we find. High-rise per-unit sealing starts around $400. We give you the written price before any work begins.
Mastic and Mesh Sealing
We brush on water-based duct mastic and embed fiberglass mesh tape at every joint, seam, and penetration. Unlike foil tape, which can peel in humid conditions, mastic stays flexible and airtight for decades. It’s the standard we apply on every Jersey City job.
Pressure Testing and Verification
After sealing, we run a duct-blaster or blower-door test to measure leakage reduction. In older Jersey City homes, we commonly see 25 – 40% leakage before sealing and under 10% after. You get the before-and-after numbers in writing.
Trusted Brands We Service in Jersey City
We carry sealing and filtration products from Aprilaire, Abatement Technologies, and Guardsman, plus rotary brush systems from Rotobrush for jobs where cleaning precedes sealing. For Jersey City homeowners, that means no waiting on special orders. If your system needs an Aprilaire media cabinet sealed properly after a filter upgrade, or Guardsman-treated access panels in a high-rise utility closet, we stock it. Most repairs and sealing jobs here are completed in a single visit because the parts are already on the truck.
Common Duct Sealing Problems We See in Jersey City Homes
- Freeze-thaw joint failure in Bergen-Lafayette rowhouses. Original sheet-metal ducts expand and contract through Jersey City’s cold winters and humid summers. The seams open slowly, so homeowners notice uneven heating first, then the musty smell when damp air gets pulled back through the return.
- Rear-extension branches in unheated chases. In McGinley Square and the Heights, ducts run through additions with no basement heat. Those branches sweat in summer, corrode at joints, and leak heated air into the wall all winter. Sealing the main trunk does nothing if these branches are ignored.
- Cross-unit air migration in waterfront high-rises. Stacked exhaust shafts and PTAC sleeves in towers near Exchange Place let cooking grease, smoke, and odors travel between floors. Sealing only your own registers won’t stop it; we identify the shaft penetration points and seal at the source.
- Moisture wick from unconditioned basements. Jersey City’s summer humidity hits 70% routinely. Poorly sealed basement ducts pull that moisture directly into the air handler, especially where someone upgraded to a higher MERV filter without sealing the ductwork first, straining the system and soaking nearby insulation.
Pricing for Duct Sealing in Jersey City, NJ
Here’s what duct sealing costs in Jersey City’s market:
| Service | Typical Range |
|---|---|
| Rowhouse whole-system sealing | $550 – $850 |
| Large home or multi-branch rebuild | $900 – $1,200 |
| High-rise per-unit PTAC/register sealing | $400 – $650 |
| Localized duct repair (single branch or joint) | $300 – $650 |
| Full repair + sealing combo | $700 – $1,400 |
What moves the price: how many branch runs need attention, whether we need to open walls or floors for access, and the condition of the original metal. We don’t quote per-vent teaser prices. We inspect, count the problem points, and give one flat price per system. Written down. Agreed to before we start. Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Jersey City
Our crews work throughout Hudson County. We regularly seal ducts in Jersey City, Hoboken, Union City, North Bergen, and Bayonne. The building stock changes block by block in this market, and we adjust our approach accordingly.
Serving Jersey City, NJ - Our Local Coverage Area
We’re based in the Jersey City 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 Duct Sealing in Jersey City
It’s almost always damp lint and soot in unheated rear-extension branches that have been collecting moisture all summer. When heat hits those ducts in October, the mustiness blows through every register. We camera-inspect the branch runs, seal the leaks with mastic and mesh, and verify with a second camera pass. In a three-family rowhouse on a Bergen-Lafayette block, our tech found exactly this: a rear-extension branch pulled apart at a joint, dumping air into the chase instead of the bedrooms. After sealing, the October smell disappeared. Call (361) 326-5060 if you’re dealing with this; we’ll pinpoint it fast.
Yes. High-rises have stacked exhaust shafts and PTAC sleeves that create shared air pathways between units. Sealing only your registers won’t stop odors from migrating through the shaft. We seal at the shaft penetration points and verify that your unit is isolated from the stack. The tools are the same; the strategy is completely different. Call (361) 326-5060 for a high-rise-specific assessment.
If the smell returns every October, sealing usually fixes it permanently. Cleaning removes the accumulated debris, but if damp air keeps entering through leaks, the debris comes back. Sealing stops the moisture intrusion. We guarantee our sealing work for 365 days, and if the smell returns due to a seal failure, we come back at no charge. Call (361) 326-5060 to stop the cycle.
We start with a visual and camera inspection of every accessible duct run, focusing on rear-extension branches and main-trunk connections. We mark every leak point, then seal with mastic and fiberglass mesh, mechanical fasteners where the metal is sound, and section replacement where it’s not. After sealing, we pressure-test or run the blower to verify. You get before-and-after photos and the test results in writing. The whole process typically takes three to five hours for a standard rowhouse. Call (361) 326-5060 to book.
Seal first, then upgrade the filter. A higher MERV rating restricts airflow, which increases pressure in leaky ducts and actually pulls more unfiltered air from wall cavities and basements. Sealing contains the pressure where it belongs. We’ve seen Jersey City homeowners upgrade to MERV 13 without sealing, then wonder why their basement smells worse and their energy bill went up. We can handle both jobs; we’ll tell you the right sequence when we inspect. Call (361) 326-5060 for an honest assessment.
Ready to stop heating your walls and start heating your rooms? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free, written estimate on duct sealing in Jersey City. We’ll inspect your system, show you exactly what we found, and give you one flat price before any work begins. Every job is backed by our 365-Day Done Right Promise.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Jersey City as part of the Garrison Partners family since 2004.