The flames in a gas fireplace come from a small series of holes designed into the burner, called 'ports'. These burner ports can be susceptible to clogging up with soot. Dust and dirt, tiny insect webs and small pieces of ceramic log material or glowing ember material will restrict the flow of gas through these holes.
One of the most common problems faced by homeowners with gas fireplaces is the pilot light going out or not staying lit. The pilot light is a small flame that ignites the gas burner, which produces the heat for your fireplace — if the pilot light goes out, your fireplace won't work.
Blocked Vent
If debris or dirt is blocking one of the gas lines, it will prevent heat from reaching the thermocouple, a safety mechanism that turns off the gas flow if the appliance is not hot enough. And this blocked vent can obstruct a gas fireplace from working.
Ensure the propane tank valve is also open and there is sufficient gas in the tank. If you have a natural gas line, verify that the main shutoff valve is also Open. If the main gas line is open but isn't delivering gas, contact your local gas utility company to determine if there is an interruption in your gas service.
If it is not delivering gas with the knob open, then the gas tank may be empty. You need to contact your supplier for a refill. Similarly, if you have piped natural gas, you need to check that the gas knob is on. If there is no gas flow, you'll need to call your utility company to restore proper supply.
Clean the louvers and airflow vents regularly to ensure proper airflow and efficient operation of your gas fireplace.
Your gas fireplace could be turning off for several reasons. The most like culprits are likely tied to some kind of problem with your setup. Anything from issues with your pilot light, clogged ports on burners, damage to heating components, and thermocouple/thermopile malfunctions can be to blame.
But in general, an efficiently running modern gas fire kept clear of dust and debris should hit or exceed that 10 to 15-year mark before showing signs of wear. Older or cheaper models may start to struggle after 7–8 years. Regular servicing and maintenance will be essential to maximising lifespan potential.
The National Fire Protection Association (NFPA) recommends all fireplace owners with solid or liquid fuel appliances have annual safety & maintenance inspections. While gas fireplaces burn cleaner than wood, yearly safety and maintenance inspections are still essential to ensure they operate safely.
The frequency of cleaning a gas fireplace chimney can vary depending on usage, but a good rule of thumb is to have it inspected and cleaned at least once a year. Even if you don't use your fireplace often, an annual inspection can catch any potential issues before they become serious problems.
If you notice signs of a gas line blockage, turn off your home's gas supply and call a plumber who specialises in gas line repair. The plumber can help you locate the source of the clog and clear it with a special probe or drain auger.
Check whether there is a board blocking the fireplace and if so, remove the board. If bricks were used you will need to carefully remove these with a hammer and chisel, without damaging the surroundings. Remember to use lime mortar to make good any old joints in the chimney's bricks as you go.
Gas Fireplace Type
Routine maintenance, such as cleaning, typically ranges from $75 to $200.
Look for Vent Pipes
These pipes facilitate the safe release of combustion byproducts, such as carbon monoxide and moisture, outside the home. By efficiently venting these gases, vent pipes help ensure indoor air quality and reduce the risk of potential health hazards.
Line the bottom of the fireplace with newspaper to collect falling soot. Use a nylon brush to scrub the walls of the fireplace, beginning at the top of the fireplace and working your way down. You can also use a vacuum hose, hand-vac or broom and dust pan to remove as much of the ash and debris as possible.
Signs of a carbon monoxide leak in your house or home
Sooty or brownish-yellow stains around the leaking appliance. Stale, stuffy, or smelly air, like the smell of something burning or overheating. Soot, smoke, fumes, or back-draft in the house from a chimney, fireplace, or other fuel burning equipment.
Common causes include problems with the pilot light, thermocouple, gas supply, obstructions, ignition system, gas pressure, and weather conditions. While some issues can be resolved with basic troubleshooting, others may require professional assistance.
Gas fireplace igniter replacement cost
A gas fireplace igniter costs $90 to $150 to replace, including labor. This component uses electricity to ignite the gas and start the fire. Over time, the igniter may stop working from age or damage.