Pilot that will not stay lit, a switch that does nothing, a burner that runs uneven. Diagnosed properly and repaired by a licensed tech.
If you can smell gas, do not switch anything on or off. Get everyone out of the house, then call the gas utility or 911 from outside. Everything below assumes the appliance is off and there is no smell of gas.
Gas fireplace repair covers the ignition system, the gas valve, the burner and the venting. Most failures come down to one of three parts, and which one it is depends on exactly how the fireplace is failing.
Gas units are everywhere in Los Angeles. Plenty of homes here have never had a wood fire in them, and the fireplace runs a handful of evenings a year at most. Then it sits for eight or nine months doing nothing.
Sitting idle is harder on a gas fireplace than running it, and that is what causes most of what we get called out for. Dust settles in the burner ports, spiders build in the pilot assembly, and carbon slowly builds on the sensors that have to stay clean to work. Come the first cool night, nothing happens when you hit the switch.
The good news is that most of it is a repair, not a replacement. The parts that fail most often are inexpensive. Diagnosing which one has failed is where the skill sits.
Tell us which of these matches when you call and we will usually arrive with the right part on the van.
You hold the control knob in, the pilot burns fine, you release it and the flame dies within about half a minute.
The thermocouple is a heat sensor sitting in the pilot flame. It generates a small voltage that holds the gas valve open. As it ages the tip oxidizes and that voltage drops below what the valve needs, so the valve shuts as a safety response. Working exactly as designed, just with a worn part.
Pilot burns away happily. You flip the wall switch and the main burner never comes on.
The thermopile is a bigger version of the same idea, a bundle of thermocouples generating enough power to run the main valve and your wall switch. As it degrades its output falls off, and there comes a point where it can hold the pilot but no longer has the power to open the main burner.
Some ports lit and some not, flames that look lazy, or a burner that sounds like it is straining.
Burner ports clog. Dust, pet hair and spider webs collect in them over months of no use, and the gas cannot come through evenly. Usually a cleaning job, not a new part.
Fireplace works, then cuts out after fifteen or twenty minutes and will not restart until it cools.
This one needs proper diagnosis. It can be a marginal thermopile that fades as it heats, a venting restriction, or a gas pressure problem. Pressure is checked with a manometer at the appliance, which is not a guess-and-swap job.
A gas flame should be mostly blue and steady. Persistent yellow tipping with soot deposits means incomplete combustion.
Turn the fireplace off and get it looked at before running it again. Incomplete combustion is how carbon monoxide gets produced, and it usually points at either the burner or the venting.
A gas fireplace produces combustion gases, and those gases have to leave the building. Everything above is about getting the thing lit. This part is about what happens after it is running.
Blockages matter more here than people expect. A nest, debris, or a partially collapsed liner restricts the flow. Restricted venting pushes combustion products back into the room. Carbon monoxide has no smell and no color, which is exactly what makes it dangerous.
So we check the vent on every gas call, and we put a meter on the appliance to measure carbon monoxide. It takes a few minutes and it is the part of the visit that actually matters.
If a carbon monoxide alarm goes off, get out of the house and call 911. Do not wait to book a service call.
Most gas repairs are done in a single visit. The parts that fail most often are the ones we carry.
Which of the scenarios above matches yours. That one detail tells us a lot before we arrive, and it means we usually turn up with the right part.
Millivolt readings on the sensors, gas pressure at the appliance, and a look at the burner and pilot assembly. Numbers, not hunches.
Vent clear, connections sound, carbon monoxide measured at the appliance. Every gas call, whatever the original complaint was.
What has failed, what it costs to fix, and whether it is worth fixing. On an old unit we will tell you honestly if replacement makes more sense.
The part goes in, the unit runs through a full cycle, and we confirm it lights, holds and vents properly before leaving.
If it dies within seconds of releasing the knob, the thermocouple is the usual answer. It sits in the pilot flame and generates the voltage that holds the gas valve open, and once its output drops below what the valve needs, the valve closes. Sometimes cleaning the tip is enough. Often it needs replacing, which is a small job.
That specific combination usually points at the thermopile. It powers the main valve and your wall switch, and as it ages its output falls. There comes a point where it can still hold the pilot but no longer has enough to open the main burner.
Cleaning the glass, yes. Anything involving the gas valve, the burner or the venting is a different matter. A mistake there vents combustion products into the room, and carbon monoxide is not something you find out about by noticing. Licensed work, for good reason.
Once a year, before you start using it for the season. In Los Angeles that is the sensible timing anyway, since the unit has been sitting untouched since spring and that is when the dust and the spiders got in.
Not swept the way a wood fireplace is, since there is no creosote. But the vent still needs checking. Blockages, corrosion and animal nests all happen regardless of what fuel is burning, and a restricted vent on a gas appliance is a genuine hazard.
It depends on which part has failed. A thermocouple is at the inexpensive end. A gas control valve is considerably more. We diagnose first and give you the number before starting, and if the unit is old enough that repair stops making sense we will say so.
A faint burning smell for the first few minutes of the season is usually dust burning off, and it should clear. A smell of gas is different and means stop, leave, and call the utility. A persistent exhaust smell while it runs points at a venting problem and needs looking at.
Tell us what the fireplace is doing and we will usually arrive with the part it needs. Diagnosed with meters, quoted before we start.
