FuranFlex® Chimney Liner Installation in NYC & Long Island
Professional Composite Chimney Liner Solutions for Commercial Buildings and Complex Venting Systems
Chimney Liner Installation
Advanced Composite Lining for Safer, Stronger Chimneys
United Chimney Corporation installs FuranFlex® chimney liners for commercial and residential properties. As a certified FuranFlex® installer, our team handles every step of the process in-house. With over 30 years of experience in commercial chimney installation in NYC and Long Island, we have refined a system built on safety, reliability, and performance.
Your boiler generates acidic condensate that corrodes traditional steel and clay liners. FuranFlex® resists that corrosion completely. It’s the only chimney liner you can install without demolition, molds to any flue shape, and hardens to steel strength in a single day.
What is FuranFlex®?
FuranFlex® is a joint-free chimney liner made with advanced technology to protect your flue from the damage caused by heat and acidic condensate. This corrosion-resistant chimney liner molds perfectly to your chimney’s shape, hardens to the strength of steel, and provides lasting safety and performance backed by a full 25-year corrosion warranty.
Reliable Venting Protection
Why Commercial Chimneys Need FuranFlex®
Your boiler venting system may be efficient, but the acidic condensate it produces isn’t harmless. Over time, it corrodes clay and uncoated steel liners, causing leaks, code violations, and costly replacements. FuranFlex® stops corrosion permanently, protecting your system and your investment.
Boiler Venting Systems
Modern boiler venting systems create acidic byproducts that damage traditional liners. FuranFlex® is a high-efficiency boiler liner that resists those acids, keeping your chimney running safely.
Gas and Oil Heating Appliances
Exhaust from oil and gas heating appliances carries moisture and corrosive compounds. FuranFlex® resists these elements, maintaining your venting efficiency and meeting NYC building code requirements.
Exhaust Ducts in Pre-War and Landmark Buildings
In older landmark buildings and pre-war building chimneys, flues typically twist through structural walls. FuranFlex® adapts to irregular shapes without demolition, making safe upgrades readily possible.
Hard-to-Access or Irregularly Shaped Chimneys
If your property has an irregularly shaped chimney or a hard-to-access flue, traditional liners won’t fit. FuranFlex® molds seamlessly to any passage, offering a precise, non-invasive solution.
benefits
Benefits of FuranFlex®
Chimney Liner Installation
FuranFlex® does more than resist corrosion. It gives you a dependable venting solution that aligns with your building’s needs and safety requirements, without the demolition, downtime, or performance loss of traditional liners.
benefits 01
No Demolition Required
Install this no-demolition chimney liner directly through your existing flue, keeping your walls intact and your operations running smoothly.
benefits 02
Joint-Free Installation Creates Airtight Performance
Eliminate joints and leaks with this seamless chimney liner and get an airtight chimney system that reduces the risk of potential fire hazards in your building.
benefits 03
Corrosion-Resistant with 25-Year Warranty
This corrosion-resistant chimney protects your system from acidic damage and comes with long-term reliability backed by a 25-year warranty.
benefits 04
Steel Strength with Minimal Weight
With this reinforced composite liner, you get the strength of steel without adding weight, which keeps your chimney structure secure and your venting system durable.
benefits 05
Fits Any Flue Shape
Whether you have a round chimney liner, square flue liner, or unique design, FuranFlex® adapts easily to any shape or system design for any type of building.
benefits 06
One-Day Installation
Thanks to same-day chimney installation, your system is restored quickly, minimizing downtime and keeping your building fully operational without extended delays.
benefits 07
Smooth Interior Improves Draft and System Efficiency
The smooth inner surface improves airflow, which results in better combustion efficiency and consistent performance. That, in turn, helps you achieve long-term fuel savings.
our 5 steps Process
Our Flue Liner Installation Process
01
Inspection and Assessment
The pre-installation assessment uses a full video scan to measure your flue, identify obstructions, and plan the safest installation route.
02
Liner Placement
During the FuranFlex® installation, our team positions the flexible tube carefully to guarantee even expansion and proper system alignment.
03
Steam Expansion and Molding
Using controlled steam, we inflate the liner for precise composite molding, shaping it perfectly to your chimney’s unique dimensions and contours.
04
Curing and Hardening
Through composite hardening and strong liner bonding, the material forms a rigid, permanent shell that seals your flue completely.
05
Final Testing and Verification
Our code compliance testing confirms full coverage and airtight integrity, providing verified documentation for your records and safety standards.
Ideal For Pre-war And Multi-story Buildings
In New York City, you see buildings with unique venting challenges, including aging masonry, shared venting systems, and limited access points. FuranFlex® solves these issues by installing without demolition, protecting your building’s character while improving safety and performance.
That’s what makes it perfect for landmark building compliance or for upgrading historic building venting in NYC and Long Island. FuranFlex® offers a non-invasive solution. It adapts to irregular flues, supports tall structures, and streamlines upgrades, making it the most practical option for your multi-story or heritage properties.
Get in touch
Get a FuranFlex® Consultation for Your Building
If your building’s flue is showing signs of corrosion, or you’re upgrading your boiler system and need a liner that can handle modern heating demands, United Chimney can help. Contact us today to schedule an inspection or discuss whether FuranFlex® is the right solution for your property.
why choose
Why Choose United Chimney Corporation
A FuranFlex® system performs only as well as the team behind it. Precision installation, building knowledge, and proven experience separate lasting results from costly rework. That’s where United Chimney Corporation delivers unmatched expertise and reliability.
01
Over 30 Years of Commercial Chimney Expertise
As an experienced chimney company in NYC and Long Island, we handle high-rise, mixed-use, and Pre-War projects with proven skill and code compliance.
02
Certified FuranFlex® Installation
Work with a certified FuranFlex® installer who understands every technical detail, ensuring accurate, safe, and long-lasting chimney performance.
03
In-House Installation and Quality Control
Our chimney installation team manages inspection, design, and setup entirely in-house for seamless communication and complete accountability.
04
Complex Building Expertise
We specialize in complex venting systems, solving design and access challenges across large-scale, multi-flue, and high-rise properties effectively.
05
Turnkey Solutions and Compliance Support
You get a turnkey venting solution that includes full documentation, testing, and inspections to maintain your building’s compliance.
06
Local Service, Tri-State Coverage
As a local chimney installer, we serve NYC and Long Island with responsive service built on regional knowledge and experience.
FAQ’s
Frequently Asked Questions
How long does a FuranFlex® installation actually take?
Most installations qualify as a same-day chimney service. Your exact installation timeline depends on the flue’s length and design, but your system is typically cured and tested within 24 hours, keeping your building operational with minimal disruption.
Will I need to vacate the building during installation?
No. FuranFlex® installation is safe for occupied building chimney work. It’s performed entirely inside the flue without open flames or hazardous conditions, allowing you to stay on-site while we work.
What’s the actual lifespan of a FuranFlex® liner?
Your chimney liner’s lifespan is essentially permanent. Backed by a 25-year corrosion warranty, the composite material resists degradation long-term, maintaining safe and efficient performance.
Can FuranFlex® be installed in chimneys that have internal damage or obstructions?
Yes, depending on severity. During our chimney damage assessment, we identify and resolve blockages or structural issues before proceeding with installation to ensure a secure, lasting fit.
How does FuranFlex® perform in older buildings with unusual flue shapes?
It excels in these situations. Even with an irregular chimney shape, the flexible tube molds perfectly, adapting to square, oval, or variable flues found in older structures.
What happens if my chimney is so damaged that a liner won’t work?
If structural chimney damage prevents safe lining, we’ll discuss other chimney repair options suitable for your building’s condition and usage requirements.
Do you handle DOB violations related to venting systems?
Yes. DOB violations and regulatory compliance issues are resolved through proper documentation, testing, and certified FuranFlex® installation that meets all NYC code standards.
What’s the actual cost difference between FuranFlex® and traditional steel liner replacement?
The FuranFlex® price is often lower due to faster installation and no demolition. It’s a smarter venting system investment that saves on labor and eliminates future replacement costs.
Can FuranFlex® be installed in boilers that are already in operation?
For operating boiler venting, we coordinate around your heating schedule to complete the installation without extended system downtime.
What kind of warranty or guarantee comes with FuranFlex® installation by United Chimney?
You receive a 25-year corrosion warranty from the manufacturer plus our installation guarantee, covering workmanship and long-term performance support.
How often does a FuranFlex® liner need inspection or maintenance?
An annual chimney inspection makes sure your system continues performing as designed. FuranFlex® doesn’t corrode, but routine checks protect your overall venting safety.
Will a FuranFlex® liner improve my boiler’s efficiency or fuel consumption?
Yes, a smoother flue boosts combustion efficiency and airflow, resulting in improved draft and measurable fuel savings for your heating system.
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location
840 Lincoln Ave., Suite 10, Bohemia, NY 11716
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