Chimney Inspection Levels: Level 1, 2 and 3 Explained
Every time your fireplace, wood stove or boiler runs, the chimney carries smoke and exhaust gases out of your home. The NFPA 211 standard calls for chimneys, fireplaces and vents to be inspected once a year, and chimney professionals use three inspection levels so the depth of the inspection matches your situation. This guide explains what each level covers, when you need it, what you receive afterward and how to get your home ready. Our certified technicians perform all three levels for homeowners across Staten Island.
Level 1: The Yearly Inspection
A Level 1 inspection is the right choice when nothing about your system has changed since the last inspection. You use the same fireplace, stove or boiler, burn the same fuel and have no reason to suspect damage. It covers the parts of the chimney and appliance that can be reached without tools or removing panels.
Level 1 is also the inspection most homeowners need each year. If you own a rental or multifamily building, schedule it before October 1. New York City's heat season runs from October 1 through May 31, and owners must keep apartments heated to the city's minimum temperatures during that time, so the heating system and its chimney need to be ready.
- Readily accessible parts of the chimney exterior and interior
- Firebox, damper and smoke chamber
- Visible condition of the flue and flue liner
- Connector pipe from the boiler, furnace or stove
- Creosote and soot buildup, nests, leaves and other blockages
- Chimney cap, crown and chase cover where they can be reached
Level 2: When Something Changes
A Level 2 inspection is needed when your system changes or when the home is sold. Examples include installing a new appliance, switching from wood to gas, adding an insert to a fireplace, or converting a boiler from oil to gas. It includes everything in a Level 1, plus a video camera scan of the full flue interior and a look at accessible attics, basements and crawlspaces where the chimney passes through.
Oil-to-gas conversions are common in New York City. When a 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 produces acidic condensate that can corrode a masonry flue. A Level 2 inspection shows whether your existing flue can handle the change or needs a liner.
We also recommend a Level 2 after a chimney fire, a lightning strike, or a storm that may have damaged the chimney. Cracked flue tiles and loosened mortar inside the flue usually can't be seen from the top or bottom, and the camera scan is how we find them.
- New or replacement fireplace, stove, insert, boiler or furnace
- Fuel switch, such as oil to gas or wood to gas
- Buying or selling a home
- Suspected chimney fire, storm or lightning damage
- Changes to the flue, such as relining
Level 3: Reaching Hidden Hazards
A Level 3 inspection is used when a hidden hazard has to be reached by opening part of the chimney or the building. It is not a routine inspection. It is usually recommended only after a Level 1 or Level 2 finds a problem that can't be fully evaluated otherwise.
Examples include suspected damage behind a chase wall, inside a wall or ceiling where the chimney passes, or within masonry that has to be partly removed to see what is going on. Before any opening is made, we explain what has to be removed, why it matters and how the area will be closed up afterward.
What You Get After the Inspection
You get clear documentation, not just a verbal summary. That way you can make decisions on your own schedule, share the findings with a buyer, seller or insurance adjuster, and compare options if repairs are needed.
- Photos of the chimney, cap, crown and any problem areas
- Video from the camera scan of the flue for Level 2 and Level 3 inspections
- A written report describing the condition of each part we inspected
- Plain-language recommendations sorted by urgency, from safety issues to items you can watch
- Notes on related services if they apply, such as sweeping, liner installation, cap and chase cover work, waterproofing, damper repair or rebuilding
How to Prepare for Your Visit
A little preparation makes the inspection faster and more complete. You don't need to go on the roof or clean anything yourself.
- Don't light the fireplace or stove the night before or the day of the visit, so the firebox is cool
- Clear a few feet of space around the fireplace, stove and boiler
- Move fragile items off the mantel and the hearth
- Make sure we can get into the attic, basement and any crawlspace the chimney passes through
- Keep pets in another room
- Have past inspection reports and details of recent changes or problems, such as smoke smells, drafts or water stains, ready to share
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?
The NFPA 211 standard calls for chimneys, fireplaces and vents to be inspected once a year. That applies whether you use the fireplace often or rarely, and it includes chimneys that vent boilers and furnaces.
Which inspection level do I need?
If nothing has changed, a Level 1 is usually enough. If you've changed appliances or fuel, are buying or selling a home, or suspect damage from a chimney fire or storm, 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 my boiler from oil to gas?
Yes. In New York City the chimney has to be evaluated as part of an oil-to-gas conversion. A new liner is often needed because gas exhaust creates acidic condensate that can corrode a masonry flue.
Is an inspection the same as a chimney sweep?
No. An inspection evaluates the condition of the chimney and appliance connections. A sweep removes creosote, soot and debris. They are often scheduled together, since a clean flue is easier to inspect.
Will a Level 3 inspection damage my home?
A Level 3 does involve removing part of the chimney or building to reach a hidden problem. We explain exactly what needs to be opened and how it will be closed up before any work begins.
What happens if the inspection finds a problem?
You receive photos, video where applicable and a written report that explains the issue and how urgent it is. You can then decide on repairs, and we can walk you through your options.
Schedule a Chimney, Vent or Duct Inspection
Tell us what you're noticing, whether that's a smell, a leak, a slow dryer or a fuel conversion. We'll inspect the system, show you what we find, and give you a written price before any work begins.