Chimney Inspection Levels: What Level 1, 2 and 3 Mean for Your Home
If you have a fireplace, wood stove, or a boiler or furnace that vents through a chimney, you will likely hear the terms Level 1, Level 2, and Level 3 inspection. These levels come from the NFPA 211 standard, which chimney professionals use to decide how deep an inspection needs to go. NFPA 211 calls for chimneys, fireplaces, and vents to be inspected once a year. Most years, a basic check is enough. Sometimes a closer look is needed. This guide explains what each level covers, when you need it, what you get afterward, and how to get your home ready. Our certified technicians at EmberGuard Chimney Sweep perform all three levels for homes and buildings across New York City.
Level 1: The Annual Inspection
A Level 1 inspection is the standard yearly check for a chimney that is being used the same way it was last year. If you have not changed your appliance, fuel, or chimney, and nothing unusual has happened, this is usually the right level.
The technician looks at the parts of the system that are readily accessible without special tools or opening walls. The goal is to confirm the chimney is structurally sound, free of blockages, and clear of dangerous buildup. A Level 1 inspection often pairs naturally with a chimney sweep, since the technician is already checking the flue.
- Accessible portions of the chimney exterior and interior
- The firebox, damper, and smoke chamber where visible
- The connection between your appliance and the chimney
- Creosote and soot buildup
- Obstructions such as nests, leaves, or debris
Level 2: When Something Changes
A Level 2 inspection goes further. It includes everything in Level 1, plus accessible areas such as attics, crawl spaces, and basements where the chimney passes. It typically includes a video scan of the inside of the flue to look for cracks, gaps, and damage you cannot see from the top or bottom.
Under NFPA 211, a Level 2 inspection is called for when the system changes or the home is sold. Changes include installing a new appliance, relining the chimney, or switching fuel. In New York City, a common example is a boiler conversion from oil to gas. When a building makes that switch, the chimney has to be evaluated as part of the work. A new liner is often needed, because gas exhaust produces acidic condensate that can corrode a masonry flue. Our team handles chimney liner installation if the inspection shows it is needed.
We also recommend a Level 2 inspection after a chimney fire, a severe storm, or any event that may have damaged the chimney, even if things look fine from the outside.
Level 3: Reaching Hidden Hazards
A Level 3 inspection is the most involved. It is used when a hidden hazard has to be reached by opening part of the chimney or building. This might mean removing a section of the chimney crown, chase, or interior wall to get to a damaged area.
Level 3 is not routine. It is usually recommended when a Level 1 or Level 2 inspection points to a serious problem that cannot be confirmed any other way, such as suspected structural damage or a concealed issue after a chimney fire. Before any opening is made, we explain what needs to be removed, why, and what the next steps would be. If repairs are needed, we can discuss chimney repair or chimney rebuilding options with you.
What You Get After the Inspection
An inspection is only useful if you understand the results. After your visit, you receive clear documentation of what we found, so you can make decisions with the facts in front of you.
This record is especially helpful when you are buying or selling a home, planning a fuel conversion, or comparing repair options.
- Photos of key areas and any problems found
- Video footage of the flue interior when a camera scan is performed
- A written report describing the condition of the chimney and system
- Plain-language recommendations, separated into urgent items and items to watch
How to Prepare for Your Visit
A little preparation helps the inspection go smoothly and keeps your home clean. Avoid using the fireplace or stove before the visit so the firebox and flue are cool.
If you live in an apartment or multi-unit building, let your building manager or super know about the visit. New York City's heat season runs from October 1 through May 31, when building owners must keep apartments heated to the city's minimum temperatures, so many owners schedule inspections before October.
- Do not burn a fire for at least a day before the inspection
- Clear a path to the fireplace, stove, or boiler
- Move furniture, rugs, and decor away from the hearth
- Make attic, basement, or crawl space access available for a Level 2
- Gather any paperwork on recent appliance changes or past repairs
- Note any smells, smoke problems, or leaks you have noticed
Inspections
Three levels of chimney inspection
The NFPA 211 standard calls for a yearly inspection. Which level you need depends on what has changed since the last one.
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Level 1
Annual check
For a chimney and appliance that have not changed and will be used the same way: the readily accessible parts of the chimney, the flue and the connection, checked for soundness, blockages and deposits.
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Level 2
Camera inspection
When something changed — a new stove, insert or boiler, a fuel switch such as oil to gas, the sale of the home, or a chimney fire, storm or quake. Adds a video scan of the whole flue and the accessible attic, roof and crawl spaces.
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Level 3
Concealed areas
Only when a Level 1 or 2 points to a hidden hazard that cannot be checked any other way: parts of the chimney or building are opened to reach it.
How often should my chimney be inspected?
NFPA 211 calls for chimneys, fireplaces, and vents to be inspected once a year. This applies whether you burn wood, use gas, or vent a boiler or furnace through the chimney.
Which inspection level do I need?
If nothing has changed since last year, a Level 1 is usually enough. If you have added a new appliance, switched fuel, or are buying or selling a home, you need a Level 2. A Level 3 is only for hidden hazards that require opening part of the chimney or building.
Do I need an inspection if I'm converting from oil to gas?
Yes. When a New York City building converts its boiler from oil to gas, the chimney has to be evaluated as part of the work. A new liner is often needed because gas exhaust creates acidic condensate that can damage a masonry flue.
Should I get my chimney inspected after a chimney fire or storm?
We recommend it. A fire or severe storm can crack a flue liner, loosen masonry, or damage a cap without obvious signs. A Level 2 inspection with a video scan helps find that damage.
Is a chimney inspection the same as a chimney sweep?
No. A sweep removes soot and creosote, while an inspection checks the condition of the system. They are often done during the same visit.
Will a Level 3 inspection damage my home?
A Level 3 inspection involves opening part of the chimney or building to reach a hidden problem. We explain exactly what needs to be opened and why before any work begins.
Schedule a Chimney or Vent Inspection
Tell us what you're noticing and what kind of building you live in. We'll set up a visit, inspect the system, show you photos, and give you a written price before any work begins.