It is the first properly cold evening of the year in Vancouver, you go to switch on the gas fireplace for the first time since spring, and nothing happens. No flame, maybe a faint click, maybe a pilot that lights and then dies a second later. This is one of the most common calls we get every fall, and the cause is almost always one of a short list of culprits.
Here is what is actually going on when a gas fireplace will not turn on, light, or stay lit, what you can rule out yourself in a couple of minutes, and when it is time to bring in a licensed gas fitter.
Start with the simple stuff. If one of these is the problem, you can have your fireplace running again in a couple of minutes without paying for a visit.
If the basics check out and it still will not fire, the problem is almost always one of the following. Most are routine fixes for a technician, but they are not DIY jobs, both because gas work is regulated in BC and because the parts that tend to fail are the safety components.
Two usual causes. Either gas is not reaching the pilot, or the pilot itself is clogged. After a summer sitting idle, the tiny pilot opening can get blocked by dust or debris, which starves it of gas (more on why that happens below). A failed igniter is the other common reason. Clearing or replacing these is quick for a technician but means getting into the burner assembly.
This is the classic thermocouple symptom. The thermocouple is a safety sensor that confirms the pilot is actually burning before it allows gas to keep flowing. When it weakens or fails, the system assumes there is no flame and shuts the gas off, which is exactly what it is supposed to do. A worn thermocouple needs to be replaced, and it is one of the most common gas fireplace repairs there is.
Here the usual suspect is the thermopile, sometimes called the generator, which produces the small amount of electricity that opens the main gas valve when you flip the switch. As it ages it gets weak and can no longer drive the valve. A faulty wall switch or remote receiver can cause the same symptom. A technician can test the output in a couple of minutes to tell which it is.
A fireplace that runs for a bit and then quits is often a thermocouple or thermopile on its way out, and in some cases an overheating or venting issue triggering a safety shutoff. Either way it should be diagnosed rather than ignored, because that shutoff is a safety response telling you something is wrong.
If it does light but the flame is lazy and yellow, or the glass is going black, the combustion is off, usually from dirt, buildup on the burner, or an air mixture that has drifted. Beyond looking bad, poor combustion is a sign the unit needs a proper cleaning and service to burn the way it should.
If you ever smell gas around your fireplace, do not try to light it, do not flip any switches, and do not go looking for the source yourself. Leave the home and call FortisBC's 24-hour gas emergency line at 1-800-663-9911 once you are safely outside. Gas safety is never a DIY situation.
There is a reason so many of these calls land on the first cold night. Through spring and summer the fireplace sits unused, and an idle pilot assembly slowly collects dust and fine debris. It does not take much buildup to block the small pilot opening or throw off the flame, and by the time you go to turn it on in the fall, the problem is already there waiting for you.
This is exactly why a pre-season service in late summer or early fall is worth it. A technician cleans the pilot and burner, checks the thermocouple and thermopile, clears the glass, and confirms the unit lights and runs the way it should, so you are not discovering it is broken on the coldest night of the year. It is the same cleaning and inspection visit that keeps the flame burning cleanly and the glass clear all season.
Past the quick checks at the top, a gas fireplace that will not turn on is a job for a licensed professional. In British Columbia, work on gas appliances has to be done by a Technical Safety BC licensed gas fitter, and for good reason: the components that fail are the safety components, and a fireplace that is not assembled and adjusted correctly is a genuine hazard.
We come out, diagnose the actual cause, bring the correct part for your specific unit, and get it running safely, all in one visit. We have been repairing and servicing gas fireplaces across Vancouver and the Lower Mainland for over 20 years, we service all major brands, and as an authorized Regency dealer we know these units inside and out. You can see more on our gas fireplace repair and service page, or read our breakdown of what a new gas fireplace costs if yours is past the point of repair.
The most common cause is a worn thermocouple, the safety sensor that keeps gas flowing only while the pilot is lit. When it weakens, it shuts the gas off because it can no longer confirm the flame is there. It is a routine replacement for a technician.
Usually because it sat idle. Dust and debris collect in the pilot assembly over the off-season and can block the pilot or disrupt the flame. A cleaning and service clears it out, which is why a pre-season checkup in the fall saves a lot of first-cold-night headaches.
Blackening glass points to incomplete combustion, typically from dirt, buildup on the burner, or an air mixture that is off. It needs a service to clean the unit and correct the flame so it burns cleanly.
No. A fireplace that shuts itself off is usually doing it as a safety response to a failing component or a combustion or venting problem. It should be diagnosed before you keep using it. And if you ever smell gas, shut it off, leave, and call the gas emergency line.
You can handle the basics: the gas valve being open, the wall switch, the remote batteries, and the thermostat setting. Beyond that, no. Anything involving the pilot, the burner, the gas valve, the thermocouple, or the thermopile is gas work, which in British Columbia legally requires a licensed gas fitter, and these are the safety components on a gas appliance. It is not worth the risk, and a proper diagnosis usually takes a technician only a few minutes.
Once a year, ideally before the heating season starts. An annual service keeps the pilot and burner clean, catches worn safety components before they fail, keeps the glass clear, and confirms the unit is burning safely.
Yes. We service all major gas fireplace brands across Vancouver and the Lower Mainland, and we are an authorized Regency dealer.
If your gas fireplace will not turn on, light, or stay lit, we can get it sorted. Our work is done by Technical Safety BC licensed gas fitters, we service all major brands, and we have been doing this across the Lower Mainland for over 20 years.
We serve homeowners across Vancouver, Burnaby, Surrey, Richmond, Coquitlam, North Vancouver, Langley, Port Coquitlam, New Westminster, Maple Ridge, and across Metro Vancouver.
Book a fireplace service call or call us at (604) 535-8434.
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