Gas Fireplace Repair in St. Louis, MO
Most gas fireplace problems come down to a failed thermocouple or thermopile, a dirty pilot assembly, a bad igniter, or a blocked vent. We diagnose with instruments rather than replacing parts and hoping, then quote the repair before doing it.
A gas fireplace is a gas appliance, and it should be treated like one. When it does not light, the honest answer is usually a worn part — but a gas smell or a fireplace that keeps shutting itself off is the system telling you something, and those are not problems to work around.
How this gets priced
Starts with the $69 inspection
Depends on which component failed and whether the part is still manufactured for your model. The $69 inspection covers the diagnosis, you get a fixed price before we replace anything, and the $69 comes off the repair.
How do I know I need gas repair?
If any of these describe your situation, it is worth having someone look. Most are cheap to fix early and expensive to fix late.
- The pilot light will not stay lit
- The fireplace clicks but will not ignite
- The flame is weak, yellow, or lifting off the burner
- The remote or wall switch does nothing
- You smell gas — leave the house and call the gas company first
- Soot is building up on the glass or the logs
- The blower is loud, rattling, or not running
- The unit shuts itself off after running for a while
- There is a strong odor when the fireplace runs
Why it matters
A gas fireplace that burns incorrectly or vents poorly produces carbon monoxide inside your home. Carbon monoxide has no smell and the early symptoms read like the flu. This is the reason gas appliances get an annual inspection.
Call (314) 887-7250What’s included
Exactly what happens when we come out, step by step.
- 1
Safety check before anything else
Gas pressure, connections, and a carbon monoxide reading. If there is a leak or a CO issue, that is what gets addressed first, before we talk about why it will not light.
- 2
Diagnose the actual fault
Test the thermocouple and thermopile with a meter, check the pilot assembly and igniter, inspect the gas valve, and verify the venting is clear. We measure rather than guess and replace parts hoping.
- 3
Repair and clean
Replace what failed, then clean the burner ports, pilot assembly, glass and logs. A large share of gas fireplace complaints are a dirty burner, not a broken one.
- 4
Verify venting and test
Confirm the vent is clear and drafting, run the unit through a full cycle, and re-check carbon monoxide with the fireplace operating.
Gas Fireplace Repair: our work
Real jobs we have done in the St. Louis metro.
Gas Fireplace Repair: common questions
How much does gas fireplace repair cost in St. Louis?
It depends on what failed — a worn sensor and a failed gas valve are very different repairs, and parts availability varies a lot by make and model. We diagnose it properly, then tell you the price before we do the work.
Why won't my gas fireplace pilot light stay lit?
The most common cause by a wide margin is a failed thermocouple or thermopile — the small sensor that proves to the gas valve that a flame is actually present. When it weakens, the valve shuts the gas off as a safety measure. It is an inexpensive part. A dirty pilot orifice and a draft blowing the pilot out are the other frequent causes.
I smell gas near my fireplace. What should I do?
Do not operate the fireplace, do not use light switches, and do not look for the leak yourself. Leave the house and call Spire at 800-887-4173 or 911 from outside. Once the gas company has made it safe, we can diagnose and repair the appliance.
How often should a gas fireplace be serviced?
Once a year. Gas fireplaces do not produce creosote, but vents get blocked by debris and animal nests, burners get dirty and burn incorrectly, and safety components wear out. The annual service is about carbon monoxide, not soot.
Why is my gas fireplace glass turning black?
Black sooting on the glass means incomplete combustion. Usually it is logs positioned incorrectly so the flame impinges on them, a dirty burner, or an air shutter that is out of adjustment. It is worth fixing quickly — incomplete combustion is also what produces carbon monoxide.
Gas Fireplace Repair across the St. Louis metro
We cover the full metro from University City. Chimney problems differ by neighborhood because the housing stock differs — here is what we see where.
Gas Repair in St. Louis
Predominantly 1890–1930 brick
Gas Repair in University City
Largely 1920s–1940s brick, Tudor and Colonial
Gas Repair in Clayton
1920s–1940s masonry, plus newer infill
Gas Repair in Kirkwood
Victorian through 1950s, wide mix
Gas Repair in Webster Groves
Victorian, Craftsman and 1920s bungalows
Gas Repair in Chesterfield
Mostly 1980s–2000s construction
Also serving Ladue, Ballwin, Creve Coeur, Maplewood, Brentwood, Florissant, St. Charles, Des Peres.
Related services
Gas Fireplace Inspection
A gas fireplace inspection checks the venting, gas connections, burner combustion and safety controls, and includes a carbon monoxide reading with the unit running. Ours is $69, credited back in full if you book a repair.
Chimney Inspection
A full chimney inspection with Total Chimney Services costs $69 anywhere in the St. Louis metro, and the entire $69 is credited back to you if you book a repair with us.
Chimney Repair
Chimney repair covers everything from a cracked crown or leaking flashing to a damaged flue liner. We start with a $69 inspection so you get photographs and one fixed price for exactly what your chimney needs — and the $69 comes off that price.
Need gas fireplace repair in St. Louis?
Start with a $69 inspection and a photo report. Credited back in full when you book the work. Call (314) 887-7250.
Open 24/7 · Emergency service, day or night.