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 Staten Island
Duct sealing in Staten Island typically runs $800 – $2,400 for a whole-home system, with most raised ranches and split-levels falling in the $1,200 – $1,800 range depending on whether we’re sealing accessible sheet-metal trunk lines or chasing leaks through crawlspaces and attics. We’re the Staten Island crew from Hollis Air Duct Cleaning, and we know this borough’s ductwork inside out, from the post-war detached homes in Great Kills to the Sandy-era rebuilds on the South Shore. Our technicians dispatch from our New York City office and carry mastic sealant, aerosol-based duct sealant systems, and the negative-air equipment needed to prep your ducts before we seal anything. Call (361) 326-5060 for a written estimate before any work starts.
Why Hollis Air Duct Cleaning Is Staten Island’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our Duct Sealing team has built a reputation in Staten Island by showing up inside the window, pricing in writing, and leaving the site clean. Staten Island homeowners aren’t looking for the lowest teaser quote; they’re looking for the quote that doesn’t change once the van is in the driveway. Our 365-Day Done Right Promise covers every duct sealing job in writing: if the seal fails or the leak returns within a year, we come back and make it right at no charge, including a free second visit.
Our technicians are background-checked and uniformed, and you’ll know who’s arriving before they knock. Phones are answered by a live person 24 hours a day, 7 days a week, no voicemail loops. We don’t quote one price over the phone and another at the door. The price is written down before any work starts, and it does not move.
HVAC Duct Sealing in Staten Island
HVAC Duct Sealing in Staten Island is not a one-size-fits-all job because this borough’s ducts carry a burden you won’t find in most metro markets. Our supply and return systems here collect a fine, dark, oily particulate from the New Jersey refineries and the heavy truck traffic across the Goethals Bridge. That residue binds with the island’s chronic dampness, especially in low-lying neighborhoods like Midland Beach and Oakwood Beach, to create a mixed soot-and-biological problem that demands source removal before any sealant goes on. Sealing over that contamination traps it inside your system. We won’t do it.
A typical HVAC duct sealing job in Staten Island runs $800 – $2,400. Raised ranches with crawlspace duct runs usually sit at $1,200 – $1,800. Split-levels with attic and basement trunk lines can push toward the higher end if we’re chasing multiple leak points across two zones. The price includes inspection, prep cleaning, sealant application, and post-seal pressure testing. We use professional-grade equipment from Rotobrush and Abatement Technologies, and we explain what each tool does before we start.
When Sealing Makes Sense
Call us for duct sealing when your energy bills spike without explanation, when rooms on the same thermostat never reach the same temperature, or when you feel airflow at registers that never matches what the blower is pushing. In Staten Island’s humid subtropical climate, forced-air systems run hard in both summer and winter, so duct leaks cost you money year-round, not just in peak season.
What We Seal and What We Replace
We seal sheet-metal trunk lines, duct joints, and air handler connections with mastic or aerosol-based sealant depending on access. Flex duct in unheated crawlspaces is a different story. If the flex is saturated, rodent-damaged, or mold-penetrated, we flag it for replacement, not sealing. Sealing bad flex is throwing good money after bad, and we’ll tell you so before we start.
Duct Repair in Staten Island
Duct Repair in Staten Island often starts with a homeowner noticing musty odors, reduced airflow, or visible mold around registers after a nor’easter or spring thaw. The island’s high water table and poor drainage in shore neighborhoods mean floodwater finds its way into crawlspaces and basements regularly, saturating duct insulation and turning sheet-metal runs into rusted, leaking channels. Most Staten Island homes were built between the 1950s and 1990s with original ductwork that has never been professionally inspected, let alone repaired, though many contain aging Carrier repair in Staten Island equipment that also needs attention.
Duct repair in this market typically runs $400 – $1,200 for localized fixes, $1,500 – $3,500 for section replacement or full trunk line rebuilds in raised ranches with extensive flood damage. We price by the job, not by the foot, and we write it down before we cut anything.
Flood Damage and Post-Sandy Ductwork
On the South Shore, especially in neighborhoods rebuilt after Hurricane Sandy, we regularly find flood-silt and mold inside ductwork that was dried out but never replaced. We treat every post-Sandy renovation as a potential biohazard job, not a routine cleaning. Our crew uses HEPA filtration under negative pressure to remove contaminants before any repair or sealant work begins.
Rodent Intrusion and Insulation Collapse
Staten Island’s older split-levels and raised ranches often have duct runs through unheated crawlspaces where rodents nest and fiberglass insulation collapses into the airway. We remove the debris, repair the duct shell, and reinstall proper insulation before sealing. Skipping the insulation step means your repaired ducts sweat in summer and bleed heat in winter.
Trusted Brands We Service in Staten Island
We carry parts and filtration products from Aprilaire, Abatement Technologies, and Guardsman on every Staten Island job, so we’re not waiting on a warehouse delivery while your system sits open. Our equipment roster includes Rotobrush rotary brush systems for agitation cleaning and Nikro negative-air machines for containment during mold remediation. For homeowners with Aprilaire media air cleaners or whole-house dehumidifiers, we can integrate duct sealing with filter upgrades and humidity control in the same visit, or pair it with Staten Island Dryer Vent Cleaning. Fast turnaround matters here because Staten Island’s climate doesn’t give you a long shoulder season to get your system straight.
Common Duct Sealing Problems We See in Staten Island Homes
- Industrial soot binding with moisture: The refinery particulate downwind of the Goethals Bridge is oily and fine, and it sticks to duct walls where humidity condenses. Ordinary dusting won’t remove it, and sealing over it traps the residue inside your breathing air.
- Flood-silt in post-Sandy rebuilds: Homes in Midland Beach, Oakwood Beach, and other South Shore neighborhoods often have ductwork that was dried but never properly cleaned after flooding. The silt holds moisture and feeds mold growth that recontaminates the system after sealing.
- Condensation in unheated crawlspaces: Raised ranches throughout Staten Island run flex duct through crawlspaces that stay cold and damp year-round. Without proper insulation and vapor barriers, sealed ducts still sweat, and sealant fails within a season.
- Flex duct rodent damage in older stock: The borough’s 1950s – 1980s housing stock often has original flex duct that rodents have chewed or nested in. Sealing punctured flex is temporary at best; we replace the damaged runs and seal the new material properly.
Pricing for Duct Sealing in Staten Island, NY
Whole-home duct sealing in Staten Island runs $800 – $2,400, with most jobs landing between $1,200 and $1,800. What moves the number: how much of your system is accessible sheet-metal versus flex duct buried in crawlspaces, whether we need negative-air prep cleaning to remove soot or mold first, and whether we’re sealing a single-zone furnace or a multi-zone system with attic and basement trunk lines.
We do not quote per-vent pricing. We do not bait with a low coupon and upsell at the door. One flat price per system, agreed in writing before work starts. Every job includes before-and-after photos of your own ducts, pressure testing to verify the seal, and our 365-Day Done Right Promise in writing. Estimates are free. Call (361) 326-5060.
We Also Serve Cities Near Staten Island
Our crews work throughout the metro area, and we regularly dispatch to Duct Sealing in Staten Island from our New York City office. We also serve homeowners in Brooklyn, Manhattan, the Bronx, and Long Beach with the same written pricing and 365-Day Done Right Promise.
Serving Staten Island, NY - Our Local Coverage Area
We’re based in the Staten Island 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 Staten Island
Because Staten Island’s ducts carry a unique contaminant load: oily industrial particulate from refinery emissions mixed with biological growth from chronic dampness. Sealing over that mixture traps it in your system. We remove the source first, then seal.
Our process starts with inspection and prep cleaning using agitation tools and HEPA filtration under negative pressure. Only then do we apply sealant to joints and trunk lines. Call (361) 326-5060 for an exact quote on your system.
The refinery emissions and Goethals Bridge truck corridor deposit a fine, dark, oily soot that ordinary household dusting won’t touch. That residue binds with humidity inside your ducts and creates a sticky film that sealant won’t adhere to properly unless it’s removed first.
We see this film in return-air systems across Great Kills, Eltingville, and South Shore neighborhoods. Our prep cleaning addresses it before sealing. Call (361) 326-5060 to schedule an inspection.
Yes, if the odor is coming from leaky duct joints that pull in crawlspace or attic air. But if the mustiness is from mold inside the duct itself, sealing alone won’t solve it and can make it worse by trapping spores inside.
We recently sealed the supply and return ducts in a raised ranch in Midland Beach where the homeowner had noticed musty odors and increased dust after a nor’easter. Our camera inspection revealed flood-silt and mold growth inside the original ductwork, so we used agitation tools and HEPA filtration under negative pressure to remove the contaminants before applying a spray-on sealant to the air handler and duct joints. The homeowner reported noticeably cleaner air and reduced allergy symptoms within a week. Call (361) 326-5060 if you’re dealing with persistent musty odors.
These neighborhoods sit at low elevation with poor drainage, so nor’easters and hurricanes push floodwater directly into crawlspaces. Even after the water recedes, silt remains inside ductwork, and the chronic dampness feeds mold growth that standard cleaning misses.
Post-Sandy rebuilds in these areas are especially vulnerable because many homeowners had ductwork dried but never replaced. We treat these jobs as biohazard remediation, not routine sealing. Call (361) 326-5060 for an assessment.
Look for a crew that inspects before quoting, removes contamination before sealing, and puts the guarantee in writing. Avoid anyone who quotes a per-vent price over the phone or pushes a fogging “sanitiser” as a substitute for actual source removal.
At Hollis, we price by the system, not the vent. We write the price down before we start. And our 365-Day Done Right Promise means if the seal fails, we return at no charge. Call (361) 326-5060 for a free estimate.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Staten Island since 2004 as part of the Garrison Partners family.