Chimney Liner & Rebuild in Bronx - You See the Footage Before You Get a Price

Fast, Reliable Chimney Liner & Rebuild Across Bronx

Chimney liner replacement and partial or full rebuilds in Bronx, NY typically cost between $2,800 and $8,500 depending on the flue count, liner material, and masonry condition, with most Level-2 camera inspections completed same-week and liner installations scheduled within 7-10 days. We’re Hearthstone Chimney Co., and our crews work the Bronx’s pre-war apartment buildings, co-ops, and manor homes every day - from Fordham walkups to Riverdale estates to the shoreline blocks of City Island. Our New York City office coordinates dispatch across the borough, and a live person answers the phone at (914) 246-5794 every hour of every day. If your building just converted from oil to gas heat, or your boiler flue failed a DOB inspection, we’ll document what you’re dealing with, show you the photos, and give you a plain-English verdict with a number on paper before any work starts.

Call (914) 246-5794

Why Hearthstone Chimney Co. Is Bronx’s Preferred Chimney Liner & Rebuild Company

We’ve been answering calls with a live person for over 42 years. Not a voicemail tree. Not a callback app. A real person, 24 hours a day, 7 days a week. That matters in the Bronx, where a failed boiler flue in January doesn’t wait for business hours.

Our background-checked, uniformed technicians carry the equipment to complete most liner inspections and installations in a single visit. We document every job with photos you can see and a written verdict you can understand. No jargon, no scare tactics. The 90-Day Done Right Promise backs every liner and rebuild job in writing - if it’s not right, we make it right, no paperwork, no arguing. That’s the Keystone Standard: Krafted right, Every time, Your home first, Standing behind it.

We know the Bronx’s building stock because we work it daily. The six-story walkups near the Grand Concourse. The co-ops along the Henry Hudson Parkway. The boiler chimneys in pre-war mid-rises that never had a decorative fireplace but have three flues working overtime. When you call (914) 246-5794, you’re talking to someone who understands that your chimney problem isn’t a suburban fireplace issue - it’s a heating-system compliance issue, and it needs to be handled like one.

Our Chimney Liner & Rebuild Services in Bronx

Stainless Steel Liner Installation

Stainless steel liners are what we install most often in Bronx boiler flues after oil-to-gas conversions. The original clay tile liners in these pre-war buildings were sized for #4 or #6 oil burners that ran hot and dry. Natural gas exhaust is cooler and carries more moisture. An oversized clay flue for gas condenses water on its walls, dissolves mortar joints, and cracks tile within a few seasons. We size and install DuraFlex stainless steel liners to match the new appliance’s output, insulating where needed to keep exhaust hot enough to exit without condensing. A typical stainless steel liner installation for a single boiler flue in a Bronx walkup runs $2,800-$4,200.

Flexible Liner Installation

Flexible liners navigate offset flues and chimney bends that rigid pipe cannot. In the Bronx’s older masonry, we’ve found flues that shift at floor transitions or were built with intentional offsets to avoid structural elements. Our Chimney Liner & Rebuild team measures the flue path with a camera first, then selects the right flexible alloy and diameter for the appliance. Flexible installations in Bronx multi-family buildings typically fall between $3,200-$5,000, with multi-flue configurations running higher depending on access.

Liner Replacement

Sometimes the liner isn’t the only problem. In a 1920s six-story walkup near the Grand Concourse in Fordham, our crew pulled a collapsed section of clay tile from a boiler flue serving a newly converted gas burner. The original oil-fired liner was oversized for the cooler gas exhaust, causing heavy condensation that had eaten through mortar joints. We installed a DuraFlex stainless steel liner sized for the new appliance, restored the smoke chamber, and sealed the crown to stop further water intrusion. Full liner replacement with smoke chamber repair and crown sealing in the Bronx typically ranges $4,500-$6,800.

Partial Chimney Rebuild

When the top courses of brick are spalling, the crown has failed, or the flue walls have lost structural integrity, a partial rebuild preserves what is sound and replaces what is not. In Throggs Neck and City Island, salt air off Long Island Sound accelerates exterior masonry deterioration. We’ve rebuilt chimney tops in these neighborhoods where the crown cracked and water worked its way down, rusting a steel liner from the outside in. Partial rebuilds with new crown, flashing, and liner restoration run $5,500-$8,500 in the Bronx market.

Liner Repair

Not every cracked tile means full replacement. HeatShield cerfractory foam and similar professional-grade resurfacing products can restore a clay flue’s surface when the structural shell remains sound. We camera-inspect first. If the flue is structurally intact but the surface is eroded or cracked, resurfacing may be the square deal. Liner repair with HeatShield application in Bronx boiler flues typically costs $1,800-$3,200, a significant savings over full replacement when conditions allow it.

Full Chimney Rebuild

For chimneys with compromised structural walls, multiple flue failures, or extensive water damage, full rebuild is sometimes the only path. We see this most often in buildings that deferred maintenance through multiple heating seasons. A full rebuild restores the chimney from the roofline up, with new flue liners, proper clearances, and a crown built to shed water. Full rebuilds in Bronx multi-flue masonry chimneys start around $12,000 and scale with height, access, and flue count.

Trusted Brands We Service in Bronx

We work exclusively with professional-grade materials from manufacturers that the trade trusts: DuraFlex for stainless and flexible liners, HeatShield for cerfractory resurfacing, Gelco for caps and screening, Olympia Chimney for specialty fittings, Famco for dampers and termination hardware, and Copperfield for masonry restoration supplies. We stock common liner diameters and fittings locally, so Bronx jobs aren’t waiting on freight from out of state. When your boiler inspection deadline is approaching and your flue needs documentation, that local inventory matters.

Common Chimney Liner & Rebuild Problems We See in Bronx Homes

• Oversized clay tile flues failing after oil-to-gas conversion. Local Law 97 is pushing thousands of Bronx landlords off heavy fuel oil. The new gas burners produce exhaust that is cooler and wetter than what those century-old flues were designed to handle. Condensation dissolves mortar and spalls tile from the inside out. We reline these flues with properly sized stainless steel to match the new appliance output.
• Mortar-clogged cleanout ports blocking inspection access. Pre-war multi-family buildings across the Bronx - especially in Fordham, Tremont, and Mott Haven - have cleanout doors that haven’t been opened in decades. Hardened mortar and debris block the camera path, hiding cracked tile and failed joints until draft problems or CO alarms force the issue. We clear access and document what we find.
• Salt-air spalling in City Island and Throggs Neck. Shoreline exposure off Long Island Sound accelerates masonry deterioration on chimney crowns, brick faces, and flashing. Water gets in, freezes, and opens cracks wider each winter. For buildings with steel liners, exterior water intrusion rusts the metal from the outside even when the flue gas isn’t corrosive.
• Bricked-up Riverdale fireplaces with 40-plus years of deferred maintenance. The 1970s oil crisis drove many Riverdale co-ops and manor homes to cap or brick up wood-burning fireplaces. The current renovation wave is uncapping them to find collapsed dampers, failed smoke chambers, and decades of animal nesting and debris accumulation. These restorations require careful liner and masonry assessment before any appliance is installed.

Pricing for Chimney Liner & Rebuild in Bronx, NY

We Also Serve Cities Near Bronx

Our crews work throughout the immediate metro area, including Bronx and the neighboring communities of Mount Vernon, Pelham, Yonkers, and Bronxville. Each of these markets has its own building stock and chimney conditions - Westchester’s single-family fireplace chimneys present different challenges than the Bronx’s boiler flues - and we adjust our approach accordingly.

FAQs - Chimney Liner & Rebuild in Bronx