Chimney Inspection Levels: What Level 1, 2 and 3 Mean for Your Home

When you book a chimney inspection, you are booking one of three levels. Chimney professionals use these levels, laid out in the NFPA 211 standard, to match the depth of the inspection to your home's situation. A yearly checkup on a chimney that hasn't changed needs a different look than a chimney behind a new gas boiler or one in a house that is about to be sold. This guide explains what each level covers, when you need it, what you get afterward, and how to get ready for the visit.

Why NFPA 211 Calls for a Yearly Inspection

The NFPA 211 standard covers chimneys, fireplaces, vents and the appliances connected to them. It calls for these systems to be inspected once a year, whether you burn wood every weekend or only run a gas boiler in the basement.

A yearly inspection catches problems that build slowly and are hard to see from inside the house. Creosote buildup, a cracked flue tile, a missing chimney cap, a damper that no longer seals, and water working its way into the masonry can all go unnoticed until they cause smoke, leaks or a fire.

In Brooklyn, the city's heat season runs from October 1 through May 31. Booking your inspection before heat season starts gives you time to schedule any cleaning or repairs before your boiler or fireplace is working hardest.

Level 1: The Annual Inspection

A Level 1 inspection is the standard yearly check. It applies when your chimney, appliances and fuel have stayed the same since the last inspection and you plan to keep using them the same way.

Our certified technician looks at the parts of the system that can be reached without special tools or opening walls. That includes the readily accessible portions of the chimney exterior and interior, the firebox, the damper, the smoke chamber where visible, and the connection to the appliance. The technician checks for soot and creosote, blockages such as nests or debris, and obvious damage. If the flue needs cleaning, a chimney sweep is often done at the same visit.

Level 2: When Something Changes

A Level 2 inspection goes further. It includes everything in a Level 1, plus a check of accessible areas such as attics, crawl spaces and basements where the chimney passes through. It also includes a camera inspection of the full length of the flue, so the technician can see the inside of the liner, joints and tile.

NFPA 211 calls for a Level 2 when the system changes or the home is sold. Common reasons include:

• Switching fuel, such as converting a boiler from oil to gas. In New York City, the chimney has to be evaluated as part of an oil-to-gas conversion, and a new liner is often needed because gas exhaust produces acidic condensate that can corrode a masonry flue.
• Installing a new appliance, like a wood stove insert or a replacement boiler or water heater.
• Relining the chimney or changing the size of the flue.
• Buying or selling a home.
• After a chimney fire, a severe storm, or any event that may have damaged the chimney. We recommend a Level 2 in these situations so the full flue can be checked.

Level 3: Reaching Hidden Hazards

A Level 3 inspection is needed when a Level 1 or Level 2 points to a serious problem that cannot be confirmed without getting to concealed parts of the chimney. This may mean removing part of the chimney, a section of wall, ceiling or chase, or other building materials.

Level 3 inspections are not routine. They are used when a hazard is suspected, such as hidden fire damage after a chimney fire or a structural issue inside the masonry. If we believe a Level 3 is needed, we will explain why, show you what we found, and talk through exactly what has to be opened before any work begins.

What You Get After the Inspection

We want you to see what our technician saw. After your inspection, you receive:

• Photos of the chimney, firebox, damper, cap and any problem areas.
• Video from the flue camera for Level 2 inspections, so you can see the inside of the liner yourself.
• A written report describing the condition of the system, what level of inspection was done, and any recommended cleaning or repairs, such as chimney repair, liner installation, waterproofing, or a new chimney cap or chase cover.
• A clear explanation of which items are safety issues and which can be planned for later.

How to Prepare for Your Inspection

A little preparation helps the visit go smoothly and lets the technician see everything that needs to be checked.

• Stop using the fireplace or wood stove at least a day before so the firebox and flue are cool.
• If possible, have the heating system turned down or off during the visit when the boiler or furnace vents into the chimney.
• Clear a path to the fireplace, boiler or water heater, and move furniture, rugs and decorations a few feet away.
• Make sure the technician can reach the attic, basement or roof access if a Level 2 inspection is planned.
• Keep pets in another room.
• Write down anything you've noticed, such as smoke smells, drafts, water stains or noises, and share it with the technician.