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.
Fast, Reliable Duct Sealing Across Newark
Duct sealing in Newark typically runs $400 – $1,200 for a whole-home system, with most Ironbound rowhouses and pre-1950 brick tenements falling in the $550 – $900 range due to access challenges and the prep work older galvanized ductwork needs. We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and our Duct Sealing crews serve Newark from our Cleveland dispatch office. We know the difference between a quick tape job and a proper seal that holds up in a century-old brick building where restaurant exhaust creeps through shared chases and basement humidity runs high eight months a year. If your registers smell like last night’s fried fish or your blower’s working harder than it should, the ducts are probably leaking air you paid to heat or cool into your walls. Call (361) 326-5060. We’ll price it in writing before we touch anything, and we back every seal with our 365-Day Done Right Promise.
Why Hollis Air Duct Cleaning Is Newark’s Preferred Duct Sealing Company
We’ve been in business since 2004, and the Garrison Standard we operate under means something specific: arrive inside the quoted window, price in writing before work starts, complete the job by the book, leave the site clean. In Newark, that standard matters more than in newer suburbs because the housing stock fights back. Pre-1950 galvanized trunks in the Ironbound, mid-century high-rise riser systems downtown, post-war split-levels in the Vailsburg section – each needs a different approach, and our technicians are trained to spot which one they’re walking into before they unpack a tool.
Our phones are answered by a live person 24 hours a day, seven days a week. No voicemail loops, no callback queues, no waiting until Monday to schedule. Background-checked, uniformed technicians arrive when we said they would. Every job gets a written price before work begins, and the 365-Day Done Right Promise covers every seal: if it fails within a year, we return and make it right at no charge, including a free second visit. That’s not a slogan. It’s in writing on every invoice.
We stock professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies – the same tools commercial crews use – and we explain what each piece does while we’re working. You’re not hiring us to perform a mystery; you’re hiring us to fix a problem and show you the fix.
Duct Insulation in Newark
Duct Insulation in Newark addresses a specific problem: the original galvanized or early sheet-metal ductwork in pre-1950 brick rowhouses and tenements was never insulated, and unconditioned basement or crawl space runs bleed heat in January and sweat in July. A typical duct insulation job in Newark runs $300 – $800 depending on linear footage, access, and whether we’re wrapping existing sealed ducts or insulating before the seal. Most Ironbound three-story rowhouses run toward the higher end because the basement trunk is long and the chase access is tight.
When Insulation Comes Before Sealing
In damp basements along the Passaic River, we often find ducts that sweat through summer humidity. Sealing a cold, sweating duct without insulation traps that moisture against the metal. We insulate first, then seal, so the conditioned air stays conditioned and the duct surface stays above dew point. It’s a sequence that matters in Newark’s climate more than in drier regions.
Material and Method
We use fiberglass duct wrap with a reinforced foil vapor barrier, secured with metal pins and UL-181 tape at seams. In high-rise riser systems, we sometimes spec closed-cell foam where clearances are tight. The material choice depends on what the building allows and what the code inspector expects – we know both because we’ve worked these buildings before.
HVAC Duct Sealing in Newark
HVAC Duct Sealing in Newark is rarely a tape-and-go job. The original ductwork in most of the city’s older housing stock – galvanized steel in pre-1950 rowhouses, early sheet-metal in post-war construction – has decades of accumulated leakage at every joint, plus damage from later renovations that crushed branch runs or disconnected trunks inside wall chases. A typical whole-home HVAC duct sealing in Newark costs $400 – $1,200, with most single-family rowhouses and duplexes falling between $550 and $900. That includes access, inspection, degreasing if needed, and the seal itself.
Grease and Exhaust Prep
In the Ironbound, restaurant exhaust vents into shared light wells, and that grease-laden air gets pulled into residential return ducts. Standard foil tape and mastic won’t bond to a grease-coated surface. We degrease the interior first – a step most generic duct sealing outfits skip – then seal with mastic and mesh or UL-181 tape depending on pressure class. The seal holds because the surface is clean.
Chase Inspection and Hidden Damage
Original galvanized runs in wall chases often separate at joints or get crushed during decades of maintenance work by other trades. We run a camera before we quote, so the price accounts for what we can reach and what we can’t. If a branch run is crushed inside a chase, sealing the plenum won’t fix it. We’ll tell you that before we start, and we’ll write it down.
Trusted Brands We Service in Newark
We carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies – rotary brush systems for mechanical agitation, negative-air machines for containment, and HEPA filtration for post-job air scrubbing. For sealing materials, we stock mastic, fiberglass mesh, UL-181 foil tape, and closed-cell insulation from Guardsman and other commercial suppliers. We don’t use hardware-store duct tape; it fails in six months, especially in Newark’s humidity cycles. Because we keep these materials on our vans, most Newark jobs don’t wait on parts. If your system needs a specific fitting for a mid-century high-rise riser, our Cleveland office coordinates same-day or next-morning pickup. The turnaround matters in a city where HVAC runs year-round and a failed seal means either sweating through August or layering blankets in February.
Common Duct Sealing Problems We See in Newark Homes
- Grease-coated returns in the Ironbound. Restaurant exhaust from shared light wells coats residential duct interiors with cooking oil. Tape and mastic won’t bond. We degrease first, then seal – a two-step process that adds time but prevents callback failures.
- Separated joints in pre-1950 galvanized trunks. Decades of thermal expansion and contraction loosen riveted or folded joints in original rowhouse ductwork. The leaks are often inside wall chases where a homeowner can’t see them. Our camera inspection finds them before we quote.
- Crushed branch runs from later renovations. Plumbing and electrical work in century-old buildings often routes through duct chases. We’ve found branch runs flattened against joists, reducing airflow by half and overworking the blower. Sealing the plenum doesn’t fix a crushed branch; we identify it and explain your options.
- Damp basement and crawl space ducts. Newark’s humid summers and cold winters create condensation on uninsulated metal in below-grade spaces. Sealing a wet duct traps moisture against the interior and promotes mold. We test for dampness first and address it before sealing.
Pricing for Duct Sealing in Newark, OH
A typical whole-home duct sealing in Newark runs $400 – $1,200. Single-family rowhouses and duplexes in the Ironbound or downtown core usually fall between $550 and $900. Mid-century high-rise apartments with central riser systems can run higher depending on access and whether we’re working in a common mechanical room. What moves the price: linear footage of accessible ductwork, whether degreasing is needed for grease-coated returns, the condition of original galvanized joints, and whether insulation is required before sealing. We do not quote per-vent prices or bait-and-switch teaser rates. We inspect, we write the price down, and that price does not move at the door. Estimates are free. Call (361) 326-5060 and we’ll schedule a look.
We Also Serve Cities Near Newark
Our crews work throughout Licking County and beyond. If you’re in Newark or nearby Heath, Granville, Pataskala, or Johnstown, we travel to you with the same equipment, the same written pricing, and the same 365-Day Done Right Promise. Dispatch and scheduling are coordinated from our Cleveland office, but the technicians who arrive at your door know these towns and their typical housing stock.
Serving Newark, OH - Our Local Coverage Area
We’re based in the Newark 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 Newark
Because the cleaning removed loose debris but didn’t fix the source: grease-laden exhaust from nearby restaurants enters shared light wells and gets pulled into your return ducts. Duct cleaning alone doesn’t stop the inflow. We degrease the duct interior, then seal the return pathway with mastic and mesh to block the odor source. Call (361) 326-5060 for a free inspection – we’ll show you the camera footage and write a price before we start.
Yes, but they need prep work first. Original galvanized ductwork in Newark’s pre-1950 housing was never designed for modern sealing methods; the joints are riveted or folded, not flanged, and decades of thermal cycling have loosened them. We inspect with a camera, degrease if needed, reconnect separated joints with mastic and fiberglass mesh, and seal accessible plenums with UL-181 tape. Some runs inside wall chases may be unreachable without demolition; we’ll tell you exactly what we can and can’t seal before we quote.
We measure. High blower amp draw, uneven temperatures room-to-room, and visible dust streaks at register edges all point to leakage, not contamination. If your ducts are clean but your energy bills are high and some rooms never reach temperature, the air is escaping before it gets to the register. We use a pressure pan test and visual inspection to distinguish a sealing problem from a cleaning problem. The fix matches the diagnosis.
Yes. Newark’s summer humidity means uninsulated metal ducts in basements and crawl spaces sweat. Sealing a cold, sweating duct without addressing condensation traps moisture and promotes mold. We test for dampness, insulate if needed, and sequence the work so the seal lasts. This climate-specific approach is standard for us on Newark jobs; it’s not an upsell, it’s the correct sequence.
We use mastic and fiberglass mesh from commercial-grade suppliers, UL-181 foil tape, and closed-cell insulation from Guardsman and other professional manufacturers. Our equipment roster includes Rotobrush rotary systems for mechanical prep, Nikro negative-air machines for containment during degreasing, and Abatement Technologies HEPA filtration for post-job air scrubbing. These are the same tools commercial HVAC contractors use, not hardware-store substitutes. Call (361) 326-5060 for an exact quote – estimates are free.
Ready to stop losing heated and cooled air into your walls? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free estimate. We’ll inspect your ductwork, write the price down before any work starts, and back every seal with our 365-Day Done Right Promise. If you’re in Newark – whether it’s a century-old brick rowhouse in the Ironbound, a mid-century split-level near Vailsburg, or a high-rise downtown – we’ve worked your building type before, and we’ll treat it like our own.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Newark and the surrounding communities under The Garrison Standard.




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