Or Call Now: 646-401-3121 - Venting and Exhaust Fans
Oil-Fired Generator Chimney Installation
A dedicated stainless steel chimney for an oil-fired generator, routed up the exterior wall and terminated above the roofline.
Commercial Rusted Chimney Replacement in NYC and Long Island
When a boiler stack or commercial chimney has rusted through, patching only buys time you do not have. We remove the failed system and install a new code compliant stainless steel chimney, sized to your equipment and backed by a Lifetime Warranty, so your building vents safely and clears inspection.
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Certified and Licensed
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Lifetime Warranty
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48 hr Proposal Turnaround
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Emergency Service 24/7
OVERVIEW
A Full Replacement, Not a Temporary Patch
Rust does not stay on the surface. Once corrosion reaches the wall of a boiler stack or metal chimney, the metal thins, joints fail, and flue gases can escape into occupied space. For property managers, building owners, and mechanical contractors, that is a safety and code exposure that repair coatings cannot resolve. We assess the flue, stack, and support structure, then replace the deteriorated system with a code compliant stainless steel chimney sized to your equipment.
As a commercial chimney contractor, we plan every rusted chimney replacement around your operations. That means a fixed proposal within 48 hours, controlled lead times, engineered drawings where the scope calls for them, and one team that carries the project from proposal through installation and warranty registration.
- 20+ Years in Business
- 1,000+ Projects Completed
- 48 hr Proposal Turnaround
- 24/7 Emergency Service
WHEN YOU NEED IT
Signs Your Commercial Chimney Needs Replacement
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Visible rust or corrosion on the stack
Orange or brown corrosion spreading across the metal stack signals that the wall is losing thickness and the system is failing from the outside in.
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Rust stains on the roof or facade
Streaking below the stack means corrosion byproducts are running off the chimney. It marks active deterioration and creates a liability with tenants and neighbors.
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Leaks or water inside the flue
Water intrusion into the flue accelerates rust, corrodes boiler connections, and points to compromised seams and caps that a replacement resolves.
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Flaking or thin metal sections
When metal flakes, pits, or feels thin at the seams, the stack can no longer safely contain flue gases and needs full replacement rather than repair.
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Draft problems from a deteriorated stack
Corroded, misshapen, or partially collapsed sections disrupt draft, causing boiler backdrafting, shutdowns, and unsafe venting in occupied buildings.
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A system past its service life
An aging stack that has already been patched repeatedly is a candidate for planned replacement before it fails and forces an emergency boiler shutdown.
OUR PROCESS
From Site Assessment to Warranty Registration
01
Site Assessment
We inspect the flue, stack, breeching, and support structure on site, document the corrosion, and confirm the specifications of your boiler and venting.
02
Engineered Proposal
We return a fixed proposal within 48 hours with a sizing plan, engineered drawings where the scope calls for them, permitting scope, and a clear replacement timeline.
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Scheduling and Staging
We confirm materials, coordinate access and roof staging, and sequence the work around your operations so the building stays occupied and running.
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Removal and Installation
Our crews remove the rusted system and install the new stainless steel chimney, sized to your equipment and installed to code.
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Testing and Certification
We test draft and function, register the Lifetime Warranty, and issue a certificate of functionality and the documentation your records require.
COMPLIANCE
Code Compliant Work With a Paper Trail
PERMITTING
Filed and Coordinated
Permitting support and filing coordination for boiler stack replacement and flue work.
VIOLATIONS
Corrected and Documented
Chimney code violation corrections with documentation for your records and any third party auditors.
CERTIFICATION
Issued on Completion
Certificate of functionality and system records issued on completion.
WHY US
Built for Commercial Accountability
One Team From Quote to Warranty
The same company scopes, installs, and stands behind the replacement, so responsibility never gets passed between vendors.
Firm Replacement Dates
We hold the schedule we quote, so your replacement does not slip and your building is not left exposed.
Fixed, Transparent Proposals
A clear scope and price up front, with no surprise change orders once the stack comes down.
Work in Occupied Buildings
We plan staging and sequencing to keep tenants, staff, and operations running with minimal downtime.
Contractor Ready
We work cleanly under general and mechanical contractors with clear scope, drawings, and schedules.
Licensed, Insured, and Certified
Fully licensed and insured crews with certified technicians and full documentation on every replacement.
WHO WE SERVE
Commercial Buildings Across the Five Boroughs and Long Island
We work with property managers, building owners, general contractors, mechanical contractors, and facility engineers across a full range of commercial building types.
- Multi family buildings
- Commercial and office buildings
- Restaurants and kitchens
- Hotels and hospitality
- Industrial buildings
- Hospitals and institutions
- Houses of worship
- Retail and mixed use
Schedule a Free Consultation
Serving Brooklyn, Manhattan, the Bronx, Queens, Staten Island, and Long Island.
OUR WORK
Recent Commercial Replacements
- Chimney Rebuild
Complete Chimney Stack Rebuild and Masonry Restoration
A severely deteriorated rooftop chimney stack was dismantled to a sound base and rebuilt in new red brick, with a new crown and a stainless steel cap.
- Chimney Rebuild
Complete Chimney Rebuild, Before and After
A failing chimney with crumbling mortar, damaged brick and a broken crown, fully dismantled and rebuilt with a new concrete crown, cap and weather-sealed base.
REVIEWS
What Our Clients Say
Mike S.
Chimney Professionals did a terrific job cleaning my two wood burning fireplaces in a Manhattan brownstone. They came within one day. Their equipment is state of the art, and it was all done in less than 30 minutes. Everything kept spotless. The price was right too.
1 Mar 2026
M. J.
Not only did they answer right away, they had Rod at my door first thing Monday morning and sourced a hard to find part same day when others could not. They beat every other quote I got and had our system back up and running in under an hour.
27 Oct 2025
Bruce S.
The chimney in my 115 year old brick rowhouse had a badly deteriorated terra cotta lining. Michael gave me a fair price, was punctual, and while spending more time than he expected, stuck to the original price. Kudos to Michael for getting a tricky job done.
2 Nov 2025
Jim S.
Mike and his team are phenomenal. Very quick to respond and schedule and then more importantly, absolute professionals. Deep cleaned the chimney and made sure they cleaned any residual dust around the area.
13 Nov 2025
Ryan L.
Our building needed three new liners for each apartment. They did a great job with the removal and new installation. Mike was very easy to work with, and very responsive with any follow ups.
10 Aug 2025
Donna L.
Chimney Professionals were prompt, professional and neat. We would recommend them to anyone looking to get their fireplaces cleaned. A pleasure to work with.
3 Dec 2025
Alan H.
We asked them to inspect our roof and chimney before an upcoming home inspection. They explained every detail clearly, helped us understand what needed fixing, and even assisted with budgeting.
10 Dec 2025
Baktiar M.
Same day service, quick and efficient. Used drones to check the chimney and provided a report. Definitely recommend.
25 Feb 2025
Kara T.
They were able to come out next day and fix our gas fireplace issue. They listened to all of our concerns and addressed any questions we had while thoroughly explaining the work that needed to be done. The price was fair and upfront.
15 Nov 2024
Brandon G.
Mike set up an appointment for the next day to clean our dryer vent. He maintained good communication the whole time. The technician who arrived was professional and did a thorough job. The price was reasonable too.
23 Aug 2025
FAQ
Common Questions From Building Owners and Contractors
Surface rust can sometimes be addressed, but once corrosion has thinned the metal or reached the seams, a coating or patch only hides the failure. We replace deteriorated stacks so the system safely contains flue gases and passes inspection.
Yes. We provide permitting support, install to New York City Department of Buildings and fire code requirements, and document chimney code violation corrections for your records.
In most cases yes. We plan staging and sequencing around your operations to keep the building occupied and running with minimal downtime, and we coordinate any required outage in advance.
Timing depends on the height of the stack, roof access, and permitting, but we set a firm schedule in the proposal and hold to it so you can plan around the work.
Yes. We regularly work under general and mechanical contractors with defined scope, engineered drawings, and firm schedules.
We offer 24/7 emergency service for boiler shutdowns and unsafe stacks, and we return a full proposal within 48 hours for planned replacements.
Replace the Rusted Stack Before It Fails
Get an engineered proposal for your commercial chimney replacement, delivered by one team and backed by a Lifetime Warranty.
MANUFACTURING
The Rust Solved at the Source
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Stainless Steel Pipes
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Chimney Liners
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Custom Caps
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Chase Covers
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Tees, Wyes, and Elbows
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Adapters and Reducers
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Flue Pipes
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Custom Fabrication
Material quality and precision of fit
The corrosion problem is solved by the quality of the material and the precision of the fit. Because we manufacture our own UL Listed stainless steel stacks, pipes, and fittings, one team handles your rusted chimney replacement from start to finish with controlled lead times and no supplier delays.
What that means for your project
- UL Listed stainless steel stacks and pipes built to resist rust, acidic flue byproducts, and heat
- Parts fabricated to your boiler, flue, and support structure rather than off the shelf approximations
- Lifetime Warranty registered on the system we manufacture and install
- One stop shop from manufacturing to installation, replacement, and repair
