Gelco Chimchimney Cleaning in Unionport, NY | Apex Chimney Cleaning Greater New York
Independent Gelco chimney cleaning and repair in Unionport typically runs $180–$340 for a standard sweep with inspection, and most jobs are completed same-day. What sets our Gelco work apart in Unionport is how we account for the neighborhood’s triple-converted flues — masonry chimneys that served coal, then oil, then gas — where Gelco liners and caps face accelerated deterioration from decades of incompatible combustion chemistry. Call (866) 884-9512 for a free estimate, and Robert Garcia will handle the inspection himself.

Why Unionport Residents Choose Us for Gelco Service
We’ve been cleaning and repairing chimneys across the Bronx for 17 years, and Unionport’s rowhouse stock keeps us busy every fall. Robert Garcia grew up not far from here, near Yankee Stadium, and learned early that a clean flue isn’t a luxury — it’s what keeps a family safe through a New York winter. He runs every job himself or alongside his small crew, which means when you call about your Gelco liner or cap, you’re talking to the person who’ll actually be on your roof.
Over 1,096 verified reviews averaging 4.7 stars tell us customers value that accountability. We’re not a franchise dispatching anonymous crews, and we’re not handymen who clean chimneys on the side. We work with professional-grade materials — DuraFlex, HeatShield, Gelco, Olympia Chimney, Famco, and Copperfield — and install them correctly the first time. In Unionport’s attached housing, where compromised flues can vent into neighboring units, that precision matters more than it does in detached suburbs.
Common Gelco Chimney Cleaning Problems We Solve in Unionport
- Cracked Gelco liner sections from freeze-thaw cycling. Unionport’s exposed masonry chimneys take the full brunt of Northeast winter moisture. Water seeps into hairline fractures, expands when it freezes, and splits Gelco stainless liners at the seams. We inspect for this every sweep — waiting until you smell smoke or your CO detector chirps is a gamble we don’t recommend.
- Spalled terra cotta beneath Gelco inserts. Many Unionport rowhouses still have original 1920s–1940s flue tiles that were never removed when Gelco liners were installed decades later. Those tiles continue crumbling, creating voids where exhaust can bypass the liner entirely. We pull the Gelco insert, assess what’s underneath, and relay the facts: patch, reline, or rebuild.
- Gelco cap displacement from ice damming. The flat crowns common to Unionport’s brick rowhouses pool water that refreezes at the flue edge. That ice leverage pops caps loose — Gelco and otherwise — leaving the flue open to debris, squirrels, and driving rain. We reset or replace with proper crown slope and cap fit.
- Corroded Gelco connector pipes from condensing gas appliances. When Unionport’s converted boilers vent into flues sized for coal or oil, exhaust cools too quickly. Modern gas produces acidic condensate that eats galvanized connectors and stains Gelco liner collars. We measure draft, calculate flue temperature, and specify the right diameter and material — sometimes upsizing the Gelco liner, sometimes recommending appliance adjustment.
- Cross-contamination through party-wall mortar joints. This one’s specific to Unionport’s density. A deteriorated Gelco liner on one side of an attached pair can draw exhaust through shared brickwork into the neighboring unit. We’ve traced CO complaints to this exact pattern on streets throughout ZIP 10473. Every cleaning includes a visual liner integrity check for this reason.
Gelco Service in Unionport: What Local Conditions Mean for Your Equipment
Unionport’s housing tells a story you can read in the brickwork. These attached rowhouses were built for coal, converted to oil in the 1950s–60s, then switched to gas — often reusing the same flue with minimal modification. That triple conversion created a chemistry problem: coal ash is alkaline, oil soot is acidic and oily, and gas condensate is aggressively acidic in a cool flue. Gelco liners installed during the gas conversion era — many in the 1980s and 90s — weren’t always specified for condensing conditions, and they’ve paid the price.
Because Unionport homes share party walls, a single compromised chimney doesn’t stay isolated. We’ve investigated carbon monoxide complaints where the source was a neighbor’s deteriorated flue, with exhaust migrating through century-old mortar joints that were never meant to be airtight. That’s why our Gelco cleaning protocol in Unionport includes liner seam inspection and draft testing, not just brushing. A chimney problem doesn’t get smaller by waiting — I’ve seen 17 years of proof.
Gelco Models & Products We Service in Unionport
We service the full Gelco line: stainless steel flexible liners in .006″ and .013″ wall thicknesses, rigid sectional liners, Gelco chimney caps in galvanized, stainless, and copper finishes, and Gelco top-sealing dampers. For Unionport’s older flues, we often specify Gelco’s ovalizing kits or round-to-oval adapters where the original clay flue is rectangular and too small for modern gas appliances.
We stock common Gelco diameters — 6″, 7″, and 8″ flexible — and carry replacement caps and dampers sized to Unionport’s typical flue openings. When a custom order’s needed, we source OEM Gelco rather than generic aftermarket. The fit, gauge, and seam welding are different, and in a flue that might be handling your family’s heat for the next twenty years, that difference matters.
Gelco Service Pricing in Unionport
| Service | Typical Range |
|---|---|
| Standard chimney sweep + inspection | $180 – $240 |
| Sweep with Gelco liner inspection & draft test | $220 – $290 |
| Gelco cap replacement (standard size) | $280 – $420 |
| Partial Gelco liner repair/resection | $340 – $680 |
| Full Gelco liner replacement | $1,800 – $3,400 |
Unionport’s triple-converted flues often need more than a basic sweep — the liner inspection adds time but catches the deterioration that a brush-alone job misses. We price by what we find, not by upselling. Every estimate is free, and we’ll show you what the camera sees before you decide. Call (866) 884-9512 for an exact quote on your Gelco system.

Serving Unionport, NY — Our Local Coverage Area
We’re based in the Unionport 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 — Gelco Chimney Cleaning in Unionport
No — Apex Chimney Cleaning Greater New York is an independent service provider. We install and service Gelco products using OEM-compatible parts, but we’re not authorized, certified, or financially tied to the manufacturer. This means we recommend what’s actually right for your flue, not what a franchise agreement requires.
We source OEM Gelco for liners, caps, and dampers — same specifications, same gauge, same seam welding. For some hardware and fasteners, we use compatible professional-grade equivalents from our standard suppliers. We’ll tell you exactly what’s going on your chimney before we order anything. Call (866) 884-9512 if you want to verify part sourcing for your specific job.
Most standard sweeps run 45 minutes to an hour and a half. Unionport’s older flues with Gelco liners add 20–30 minutes for liner seam inspection and draft testing — time we won’t skip, given the neighborhood’s history of cross-contamination through party walls. We schedule two-hour windows and rarely need the full block.
We handle all Gelco flexible and rigid liner systems, top-sealing dampers, and chimney caps. That includes discontinued models still running in Unionport homes from the 1980s and 90s — we fabricate transitions or adapter pieces when factory parts are obsolete. If you’re unsure what you have, Robert Garcia can identify it on sight during the free estimate.
Standard sweep and inspection runs $180–$240; with Gelco liner-specific testing, $220–$290. Full liner replacement, when needed, ranges $1,800–$3,400 depending on height, diameter, and whether the flue needs ovalizing. Unionport’s attached construction sometimes requires coordination with neighboring units for access, which can affect scheduling but rarely pricing. Call (866) 884-9512 for a free, exact estimate — we’ll look at your specific flue and give you a number, not a range.
Service Areas Near Unionport
We work throughout the Bronx and into adjacent neighborhoods — regularly in Flatbush and Kensington across the bridge, Brooklyn for liner replacements on similar rowhouse stock, and Hillside and Hempstead when the job calls for the full rebuild capability we bring from Unionport. Same owner, same crew, same standards.
Book Your Gelco Service in Unionport Today
Robert Garcia handles every estimate personally. Same-day appointments are often available for Unionport calls received before noon, and we’ll inspect your Gelco liner, cap, and draft performance as a single protocol — because in this neighborhood, looking at one without the others misses the picture. Call (866) 884-9512 now.
Written by Robert Garcia, Owner at Apex Chimney Cleaning Greater New York, serving Unionport and the Bronx since 2007.