When it comes to home fireplaces, gas units have become extremely popular for the convenience, warmth, and control they offer. Like any appliance, however, they require maintenance and encounter issues from time to time.

Understanding common problems and how to address them can help you continue enjoying your fireplace to the max – and diligent, proper care will extend the useful life of your unit. 

Are you experiencing fireplace woes? Here are a few common issues and some solutions to consider… Need to schedule your annual maintenance? Reach out now – we’re here to help.

original infographic stating common issues for gas fireplaces

My Gas Fireplace Won’t Turn On


  • No gas supply. Your gas fireplace needs a supply of gas and electricity to operate, so if one or the other is interrupted, ignition won’t happen. If the gas line isn’t open or the gas supply is inadequate, your fireplace isn’t going to turn on.
  • Electrical problems. Your internal electronic ignition system won’t allow your fireplace to kick on if there’s an issue with the power supply, the circuit breaker, or the wall switch.
  • Faulty thermostat, thermopile, or thermocouple. Depending on the age of your unit, you’ll have a thermostat or thermopile between your gas valve and pilot light that contributes to ignition. If it’s loose or faulty, or if your thermostat is malfunctioning, it may prevent your fireplace from turning on.


If your gas fireplace refuses to turn on, begin to troubleshoot by checking that the gas supply valve is fully open. If it isn’t, simply open it and try again. Then, ensure that the pilot light is lit – more on that soon. If the problem persists, examine the electrical components. Check your circuit breaker, and if it’s tripped, flip it to the on position. 

If the gas and electricity supply seem to be functioning well, it could be a sensor issue. Adjust your temperature settings to see if your unit kicks on. Ensure that the thermocouple or thermopile is securely in its proper place. If not, it may need to be tightened or readjusted. If these steps don’t help, it’s time to enlist the help of a professional to safely diagnose and address the problem.

My Gas Fireplace Pilot Light Won’t Stay Lit


  • Thermocouple issues. A faulty or dirty thermocouple or thermopile may not generate enough voltage to keep the pilot light going.
  • Gas pressure. Low gas pressure may not be able to sustain the pilot light.
  • Draft issues. Poor ventilation or strong downdrafts can extinguish the pilot light.


If dirt is hindering your pilot light, it’s time to get cleaning. Clear away any dirt or debris on or around your thermocouple. If this doesn’t solve the problem, you may find the thermocouple or thermopile needs to be replaced. Address drafts if they are a persistent problem, and follow the manufacturer’s directions for relighting the pilot light.

My Gas Fireplace Igniter Isn’t Sparking


  • Dirty or corroded igniter. Accumulated dirt can prevent the igniter from functioning well.
  • Misaligned or damaged igniter. If there’s physical damage or misalignment, it may fail to spark.
  • Faulty ignition module. The ignition module, which generates the spark, might be defective.


Gently remove dirt and corrosion built up on the igniter and surrounding area. If the igniter appears damaged, it may need to be replaced. 

My Gas Fireplace Is Emitting a Strange Odor


  • You have a newer unit. An odor isn’t uncommon as manufacturing residues burn off.
  • Gas leak. A rotten, sulfuric odor might indicate a gas leak.


Odors present after installation due to manufacturing residues and painting when first using the fireplace are temporary and will subside. However, if you smell something akin to rotten eggs, act immediately. If a gas leak is suspected, shut off the gas supply, evacuate your home, and contact your local gas utility company for emergency service.

My Gas Fireplace Isn’t Producing Enough Heat


  • Incorrect fireplace size. An improperly sized fireplace relative to the space may struggle to generate enough heat for the room it’s in.
  • Dirty or deteriorated components. Efficiency may be compromised by a buildup of dirt, grime, or byproducts of burning, or by worn-out parts.
  • Insufficient insulation. Heat can be easily lost if insulation within the room is poor.


Various factors can impact a fireplace’s efficiency. Inspect components for obvious signs of grime or wear that may be hindering performance, and have parts replaced as needed. Seal any gaps around doors and windows to help retain heat. And consult a professional if you feel your fireplace may be mismatched with the size of your room, or if heat loss problems continue. 

We Can Troubleshoot Gas Fireplace Problems

Many fireplace issues can be resolved with simple maintenance and adjustments…but remember that prioritizing safety when dealing with a home heating unit is essential.

Be sure to consult a professional technician for complex repairs, especially if the issue remains ambiguous while diagnosing or if concerns involve the gas supply, electrical components, or ventilation.

And remember that fireplaces and chimneys should be inspected annually by a certified professional. These steps will help you safely enjoy your fireplace for years to come!

Call or book online with our experts today.