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(314) 379-2871 — St. Louis, MO & IL Aiopro1701@gmail.com
AIO Pro Chimney
(314) 379-2871

Chimney Inspection
St. Louis, MO

Level I, II & III inspection by trained, insured technicians. HD camera inspection — NFPA 211 calls for one whenever a property changes hands. Written report delivered same day. Same-day appointments available.

HD Camera Inspection
CSIA & NCSG Member
Written Report Same Day
Accepted for Home Sales
1–2 Day Scheduling

The Three Levels of Chimney Inspection — What You Need and Why

NFPA 211 — the national standard for chimneys and fireplaces — defines three levels of chimney inspection. Understanding which level applies to your situation is the first step in protecting your home and investment.

Level I — Annual Visual Inspection

A Level I inspection covers all readily accessible portions of the chimney structure — the firebox, visible flue interior, exterior masonry, crown, and cap. It's appropriate when the chimney has been used without problems in a normal way and with no changes made to the system. AIO Pro includes a free Level I inspection with every chimney sweep ($199).

Level II — HD Camera Inspection (Required for Home Sales)

A Level II inspection is required by NFPA 211 when: a home is being sold or transferred, a new appliance is being installed or connected to the system, or after any event that may have damaged the chimney (storm, earthquake, chimney fire). It includes everything in a Level I plus a full HD video scan of the complete flue interior.

Most home sales in St. Louis County and surrounding municipalities now require a Level II inspection before closing. Our written report with photos is accepted by all local real estate agents, home inspectors, and lenders. Cost: $199–$299.

📋 Real estate note: An uninspected chimney can kill a home sale at closing. AIO Pro can typically schedule within 1–2 business days and deliver the written report the same day as the inspection — keeping your transaction on timeline.

Level III — Invasive Structural Inspection

A Level III inspection is required when a Level I or II has identified conditions requiring further investigation that can't be assessed without accessing concealed portions of the chimney. This may involve removing components, opening walls, or accessing the attic. Pricing depends on scope — call for details.

What a Level II Camera Inspection Reveals

Liner cracks invisible to naked eye
Mortar joint deterioration in flue
Blockages from debris or animals
Creosote staging — fire risk level
Water damage inside the liner
Missing mortar at crown or smoke shelf
Level I: $49 new customers • Level II: $199–$299
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Chimney Inspection St. Louis — FAQ

How much does a chimney inspection cost in St. Louis?
Level I inspection is $49 for new customers (free with chimney sweep). Level II camera inspection is $199–$299 — NFPA 211 calls for one on sale or transfer, and most municipalities, buyers and lenders ask for it in St. Louis County. Level III inspection is priced by scope. All prices include a written report with photographs.
Do I need a Level II inspection to sell my home in St. Louis?
NFPA 211 — the national standard for chimneys — calls for a Level II inspection whenever a property is sold or transferred. It is not a Missouri or Illinois state law, but most St. Louis-area municipalities, buyers, lenders and home inspectors ask for one, and sellers who skip it often face last-minute renegotiations when the buyer's inspector flags the chimney. Our written report with photos is accepted by local agents and lenders.
Signs of chimney damage in Missouri homes — what should I look for?
Watch for: white staining (efflorescence) on exterior brick, crumbling mortar, ceiling stains near the chimney, smoke entering the room, a smell from the fireplace when not in use, visible rust on the damper or firebox, and water in the firebox after rain. However, the most dangerous damage — liner cracks, hidden water infiltration — is only visible via Level II camera inspection.
Emergency chimney services near me — how quickly can you inspect?
We typically schedule St. Louis area inspections within 1–2 business days. For CO concerns or active smoke issues, call (314) 379-2871 for same-day prioritization. We're open Sunday through Friday, 7am–6pm.

Book Your Inspection —
Same Day Available

Written report delivered same day. Accepted for all St. Louis County real estate closings.

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Real Jobs, Real Photos

Recent Work From Our Crews

Every photo below is from an actual job we completed in the Greater St. Louis area — before, during and after. No stock images.

RECENT PROJECT IN O'FALLON

Green Streaks Outside. Rot Inside.

Chase opened up · Sheathing replaced · New WRB · Source sealed first

It started as a routine inspection. Green streaking on the siding was the only clue — we took a panel off and found the sheathing rotted through.

See the full O'Fallon project

BEFORE — JUST A STAIN
Green-black streaking on siding below a chimney chase, O'Fallon MOExterior view of a chimney chase with staining, O'Fallon
DISCOVERY — WE OPENED THE WALL
Rotted sheathing found behind siding on a chimney chaseDestroyed house wrap and water damage inside a chase wallFull extent of hidden water damage inside a chimney chase
REPAIR
Replacing rotted sheathing with new plywoodNew weather-resistant barrier installed on a rebuilt chaseNew siding fitted to a repaired chimney chase
AFTER
Completed chimney chase repair in O'Fallon MOFinished chase leak repair — no more staining

See streaking on the siding under your chimney?

You cannot diagnose the inside of a wall from outside it. Free inspection — we'll tell you if it's fine.

CALL FOR INSPECTION

SERVICE AREAS — Greater St. Louis, MO

ChesterfieldKirkwoodLadueClaytonFrontenacTown & CountryWildwoodUniversity CityBallwinArnoldSt. CharlesFenton

© 2026 AIO Pro Chimney — St. Louis, MO • Licensed & Insured • CSIA & NCSG Member • NCSG Member

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