How to light a pilot on a gas fireplace
Lighting the pilot on gas fireplace units is one of the most common questions we receive from homeowners, especially when the first cold snap of the season hits. Whether you have a natural gas fireplace or a propane fireplace, it is perfectly normal for the pilot light to go out occasionally due to strong drafts, a lapse in use, or air bubbles in the gas supply line.
Understanding how to safely manage your pilot assembly, which includes the control knob, the igniter button, and the gas control valve, is essential for both your comfort and your home's safety. While modern systems are built with robust safety shutoff features, knowing the manual sequence ensures you aren't left in the cold. While learning how to operate and maintain your fireplace is important, many homeowners also look for creative fireplace ideas for your living room to enhance the overall ambiance of their space.
How to Light the Pilot Light on a Gas Fireplace (Step-by-Step Guide)
Relighting a standing pilot isn't complicated, but it does require patience. Before you begin, ensure you haven't smelled a strong "rotten egg" odor in the room, which could indicate a leak. If the air is clear, follow these steps:
-
Locate the Gas Shut-Off Valve: Ensure the main manual valve leading to the fireplace is in the "On" position (the handle should be parallel to the pipe).
-
Clear the Area: Remove the decorative glass front or screen to access the gas control valve and the pilot assembly.
-
Set the Control Knob: Find the control knob (usually a black or gray dial). Rotate it from the "Off" position to the "Pilot" position.
-
Engage the Gas Flow: Press the control knob inward. This manually overrides the safety shutoff to send a small amount of gas to the pilot burner.
-
Spark the Igniter: While holding the knob down, press the igniter button (often a red or black piezo igniter) repeatedly until you see a blue flame appear at the pilot location.
-
Warm the Thermocouple: This is the most important step. Continue holding the control knob down for 30 to 60 seconds. This allows the thermocouple or thermopile to heat up. These sensors tell the system that a flame is present; if they aren't hot enough, the gas will cut off the moment you let go.
-
Switch to "On": Slowly release the knob. If the flame stays lit, rotate the knob to the "On" position. Your fireplace is now ready to be triggered by your wall switch or remote.
If your unit features a modern electronic ignition system, you may not have a standing pilot to light manually. In those cases, the system uses a flame sensor to spark automatically when you flip the switch. For example, contemporary electric and hybrid systems like the Modern Flames Redstone 36 offer advanced ignition technology that eliminates the need for a traditional standing pilot.
Where Is the Pilot Light Located on a Gas Fireplace?
If you are new to gas appliances, finding the hardware can be a bit of a treasure hunt. The location varies slightly depending on your specific model:
-
Fireplace Insert: In a fireplace insert, the controls are usually hidden behind a metal "louver" or decorative flap at the very bottom of the unit.
-
Vented Gas Fireplace: In a vented gas fireplace, the pilot is typically tucked behind the log set, near the back or side of the burner tube.
-
Ventless Gas Fireplace: Because a ventless gas fireplace operates without a chimney, the pilot is often integrated with an oxygen depletion sensor (ODS). This safety feature ensures the pilot shuts down if oxygen levels in the room drop too low.
Regardless of the type, the pilot is always positioned near the main burner so it can easily ignite the larger gas flow when requested.
Common Gas Fireplace Pilot Light Problems and Fixes
Sometimes, even after following the steps perfectly, the flame just won't stay lit. Here are the most frequent culprits our team at The Torch Guys encounters:
1. Dirty Pilot Assembly
Over time, dust, carbon buildup, or even spider webs can clog the small orifice of the pilot. A gentle cleaning with a can of compressed air or a soft brush can often resolve this. In many cases, homeowners also benefit from cleaning a gas fireplace thermocouple, since buildup on the thermocouple can prevent the system from recognizing the pilot flame.
2. Faulty Thermocouple or Thermopile
The thermocouple is a small metal rod that generates a millivolt signal when heated. If it’s worn out or covered in soot, it won't signal the gas control valve to stay open. If your pilot lights but goes out the second you release the knob, this is usually the issue.
3. Blocked Gas Supply Line
If you haven't used your fireplace in months, air may be trapped in the line. You might have to hold the control knob down in the "Pilot" position for several minutes to "bleed" the air out before the gas actually reaches the igniter.
4. Malfunctioning Electronic Ignition System
If you hear a clicking sound but see no spark, your electronic ignition system might have a dead battery backup or a loose wire at the flame sensor.
Pro Tip: If you've tried these steps and the pilot still won't catch, it’s time to put down the tools. Dealing with gas components requires precision. You can contact us to speak with an expert or schedule a professional inspection. Even if you primarily use a gas fireplace, many households still keep firewood for outdoor fire pits or wood-burning units. Understanding the proper wood log stacking technique helps keep wood dry and ready to burn. And also check stylish ideas for covering fireplace openings.
Frequently Asked Questions
Do I need to turn off the gas before relighting the pilot?
No, you do not need to turn off the main gas supply, but you must ensure the fireplace control knob has been in the "Off" position for at least five minutes to allow any residual gas to dissipate before attempting to relight.
How long should I hold the pilot button down?
You should typically hold the control knob or pilot button down for 30 to 60 seconds after the flame appears. This ensures the thermocouple is hot enough to keep the gas valve open.
Is it dangerous if my pilot light goes out?
Generally, no. Modern fireplaces have a safety shutoff that automatically closes the gas valve if the pilot flame is lost, preventing gas from leaking into your home.
Can I relight a gas fireplace without calling a technician?
Yes, most homeowners can safely relight their own pilot by following the manufacturer’s instructions. However, if you smell gas or the pilot won't stay lit after several attempts, call a professional.
Where is the pilot light located on most gas fireplaces?
It is usually located near the main burner assembly, often tucked behind or to the side of the logs. You may need to open a bottom access panel to see the control dial.
What should I do if I smell gas while lighting the pilot?
Stop immediately. Turn the gas to the "Off" position, open your windows, exit the house, and call your gas provider or emergency services from a safe distance.
Conclusion
Mastering your fireplace shouldn't be stressful. By understanding the relationship between your gas control valve, thermocouple, and igniter button, you can ensure your home stays warm throughout the winter. Remember that regular maintenance—like cleaning the pilot assembly—is the best way to prevent your pilot from going out in the first place.
Whether you are looking to upgrade to a high-efficiency direct vent gas fireplace, install a statement piece like a 60-inch gas fireplace, or enhance your setup with premium options such as Real Fyre fireplace log sets or Grand Canyon gas log sets, The Torch Guys are here to help. You can even explore outdoor comfort solutions like HPC outdoor gas fire pits for year-round warmth.
Explore our collections today or contact us for expert advice on how to light a pilot on a gas fireplace.