A gas fireplace that will not light, will not stay lit, or that shuts off unexpectedly is almost always a specific, identifiable component failing, not a mystery. The two most common culprits are a worn thermocouple or thermopile, the small safety sensor that confirms the pilot flame is actually burning before it allows gas flow, and a failing gas valve.
Common gas fireplace problems we diagnose
Pilot won’t stay lit
Usually a worn thermocouple or thermopile that no longer signals a stable flame.
No response from remote or wall switch
Often a battery, receiver, or wiring issue rather than the gas valve itself.
Weak or uneven flame
Can point to a dirty burner, misaligned logs, or a gas pressure issue.
Smell of gas
Treat as urgent; shut off the gas supply and call us or your gas utility immediately.
What a repair visit includes
Frequently asked questions
Is a gas fireplace still safe to use with an old thermocouple?
A failing thermocouple typically causes the pilot to go out rather than create a safety issue on its own, since its whole job is a fail-safe shutoff. Still, an unreliable pilot is worth fixing rather than living with.
Do you also service ventless gas log sets?
Yes, ventless and vented gas fireplaces and log sets both have similar core components, and we service both.
How often should a gas fireplace be serviced?
An annual check is a reasonable standard, even though there’s no creosote to worry about, since it catches worn components and confirms safe operation before the season you’ll actually use it.
Can I troubleshoot a pilot light issue myself first?
Basic steps like checking the gas supply valve and battery in a remote receiver are fine to check yourself. Anything involving the gas valve or persistent relighting issues is worth having looked at professionally.