Or Call Now: 646-401-3121 - 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.
Carbon Monoxide Test for Chimneys and Venting Systems
Carbon monoxide is invisible and has no smell, so a leaking chimney or appliance can go unnoticed. Our certified inspectors test for carbon monoxide and confirm that combustion gases leave your property safely, then hand you a clear written report you can act on.
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Certified and Licensed
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Lifetime Warranty
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Free Estimates
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Emergency Service 24/7
OVERVIEW
A Focused Safety Check for Every Fuel Burning System
Carbon monoxide forms whenever fuel burns. Under normal conditions the chimney carries it safely up and out, but a small venting fault can release it into occupied space without any warning. A carbon monoxide chimney test measures the gas where your appliances vent and confirms that the chimney is drawing those gases out of the home or building the way it should.
This is one of the most important safety checks for any property that runs a furnace, boiler, water heater, stove, or fireplace. Because carbon monoxide is colorless, odorless, and tasteless, the reading itself is often the first hard evidence that something is wrong.
Our inspectors pair the reading with a full look at the flue, the liner, and the appliance connections. We do not simply confirm a number. We identify what is behind any problem we find, explain it in plain terms, and document everything so you know exactly where the property stands.
WHAT WE CHECK
Every Point Where Combustion Gases Can Escape
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Carbon monoxide readings
We measure carbon monoxide at each fuel burning appliance the chimney serves while it operates, so any elevated level is caught at its source.
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Appliance combustion
We check how cleanly each furnace, boiler, water heater, stove, or fireplace is burning fuel, since poor combustion is a common origin of elevated readings.
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Flue and liner condition
We examine the flue and liner for cracks, gaps, and wear that let gases slip out of the intended path. A camera is used where the interior is hard to reach.
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Blockages and restriction
We look for creosote, nests, and debris that narrow the flue and hold gases back instead of letting them rise and clear.
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Draft and airflow
We confirm the draft is strong enough to pull combustion gases up the chimney and out, rather than letting them stall or reverse into the property.
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Appliance connections
We inspect the connectors and joints between each appliance and the chimney, where a loose or corroded fitting can leak gas into living or working space.
OUR PROCESS
How We Carry Out the Test
01
Review and Setup
We confirm which appliances the chimney serves and note the age and type of each system before we begin.
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Carbon Monoxide Readings
We measure carbon monoxide at each fuel burning appliance while it runs and record how cleanly each unit is burning.
03
Flue and Liner Check
We examine the flue and liner, using a camera where the interior is hard to reach, so hidden cracks and blockages are captured rather than missed.
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Draft and Venting Confirmation
We verify that gases are drawing up the chimney and leaving the property, and we trace the source of any fault we find.
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Report and Next Steps
We document the findings, walk you through them in person, and explain the condition of the system in plain terms.
COMPLIANCE
Findings You Can File and Act On
INSPECTED
Full Scope Recorded
Every appliance and area checked is listed, so the record shows exactly what was covered.
TESTED
Readings Logged
The carbon monoxide readings taken at each appliance are documented alongside the venting result.
DOCUMENTED
Report and Certificate
You get a written report with photos or camera footage where relevant, plus a certificate of cleanliness and functionality where the property passes.
WHY US
What Sets Our Testing Apart
Certified Inspectors
Trained technicians who test to recognized safety standards, including NFPA 211.
Honest Findings
We report what we actually measure and find, with no invented problems and no pressure.
Camera Verified
We scan the flue interior where needed, so hidden defects are documented rather than guessed at.
A Clear Report
Written documentation, photos, and a plain condition assessment you can keep on file and act on.
Fast Scheduling
Same day appointments, with priority response for a suspected leak or a boiler shutdown.
Licensed and Insured
Fully licensed and insured for both residential and commercial work.
WHO WE SERVE
Homes and Buildings That Depend on Safe Venting
We carry out carbon monoxide testing across a wide range of properties, from a single fireplace to a multi unit boiler system. Whether you own a home or manage a building, the safety goal is the same: confirm that combustion gases are leaving the structure and not entering it.
- Single family homes
- Townhouses and condos
- Brownstones
- Historic homes
- Multi family buildings
- Commercial and office buildings
- Restaurants and kitchens
- Hotels and hospitality
Schedule an Inspection
Serving Brooklyn, Manhattan, the Bronx, Queens, Staten Island, and Long Island.
OUR WORK
Recent Testing Projects
- Fireplace and Firebox
Custom Fireplace Construction with Class A Chimney and Offset Flue
A new masonry fireplace built to the project plans, with a custom firebrick firebox, smoke chamber and an offset connection into a Class A insulated chimney.
- Fireplace and Firebox
Brownstone Fireplace Reconstruction and Restoration
A decommissioned fireplace in a historic brownstone brought back to life with a new firebrick firebox, rebuilt masonry and a reinstalled stainless steel liner.
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 About Carbon Monoxide Testing
Once a year is the standard for any property with fuel burning appliances. You should also test before or after a real estate sale, after a chimney fire, after a liner replacement, and after a change of fuel or heating system.
No. An alarm is a last line of defense that reacts once gas is already present. This test finds the venting fault that would let carbon monoxide build up in the first place. You should have both.
Every fuel burning unit the chimney serves, which usually means the furnace, boiler, water heater, stove, and fireplace.
We tell you exactly what is behind it and put it in writing with a plain condition assessment, then our draft correction or repair service handles the fix.
Yes. We test multi unit and commercial boiler flues and can schedule across a portfolio, with documentation suited to code compliance.
Yes. We offer same day appointments and 24/7 priority response for a suspected carbon monoxide leak or a boiler shutdown.
Pricing depends on the number of appliances and the size of the system, so we provide a free estimate up front before any work is scheduled.
Know Your Property Is Venting Safely
Book a carbon monoxide test with our certified inspectors and get a clear written report you can act on.