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The Daily Insight

How do you start a gas log

Author

Mia Morrison

Published Apr 01, 2026

Look over the user manual included with your fireplace. … Remove your fireplace’s outer cover. … Put a fireplace key into the device’s gas valve knob. … Hold a long lighter up to the burner and ignite it. … Turn the gas key. … Replace the fireplace’s outer cover immediately.

How do you turn on a gas fireplace log?

  1. Look over the user manual included with your fireplace. …
  2. Remove your fireplace’s outer cover. …
  3. Put a fireplace key into the device’s gas valve knob. …
  4. Hold a long lighter up to the burner and ignite it. …
  5. Turn the gas key. …
  6. Replace the fireplace’s outer cover immediately.

How do you light a gas log lighter?

Just set the logs on the wood grate over the log lighter, turn the key to open the gas line, toss in a lit match, and the fire lights around your logs. After the logs have caught on fire, turn the valve key to close the gas line, and enjoy the crackling wood fire before you.

Why won't my gas logs start?

Another common issue with ignition is a dirty pilot light orifice, caused by a buildup of soot and dirt. If you have successfully re-lit your pilot light, ensured that the orifice is clean, and the fireplace still refuses to ignite, there could be an issue with the thermopile, thermocouple or wiring.

What do I do if my gas fireplace won't light?

If gas is coming out of the pilot, but it still won’t light, the spark igniter could be the problem. Alleyne says to look for and clear out any debris between the igniter and thermocouple. 4. The pilot lighting, but not staying lit, indicates that the thermocouple is worn out, Worthen says.

How do you start a natural gas fireplace?

Turn the knob from the “Off” to the “Pilot” position. Push in the pilot knob, which manually sends gas into the system. Push the igniter button once every second until it lights. Depending on how long it’s been since the gas fireplace was last used, ignition may take multiple attempts.

How do gas logs work?

A gas log is composed of piping and a set of ceramic logs. These logs can be placed in many different types of fireplace spaces. The pipes pump invisible gas through holes in the logs. When the gas logs are ignited, the ceramic logs will produce a steady flame.

Can I install gas logs myself?

Gas log installation should only be done by a certified professional. Homeowners should never install their own gas logs unless they have the tools and training to do so.

Why does it take so long for my gas fireplace to turn on?

Usually the problem is solved by having the fireplace cleaned and serviced, which takes about an hour of time. Look for a competent fireplace repairman to do this job for you. Most gas fireplaces do not have a thermocouple, they have a pilot generator which developed the voltage to turn the main burner on.

What is gas log set?

Gas logs are a stack of ceramic logs that sit inside your existing fireplace. Gas logs have a gas burner and they come in vent-free and vented options. … Most of the heat that is generated from a gas log set goes right up your chimney – just like a wood burning fireplace.

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Do gas logs need a vent?

Vented gas logs must be vented through a functional chimney in order to move all burning by-products outside the home. Vented gas logs produce the most realistic flames but put off less heat than their vent-free counterparts due mostly to the fact the chimney flue must be open when the fireplace is in use.

Are gas fireplace keys universal?

Universal Valve Key for Gas Fire Pits and Fireplaces Are you looking for a replacement key to your indoor or outdoor gas fireplace valve? This Gas Key is the perfect tool for controlling gas in your fireplace. Being universal, it works with both 1/4” and 5/16” socket sizes.

Should I turn off the pilot light on my gas fireplace in the summer?

Your Utility Bill Perhaps the most important reason to turn off gas fireplace pilot light in summer is because of the money and energy you will be saving. If you leave the pilot light on during the summer it is simply sitting there burning gas, which is wasting gas and contributing to an exorbitant energy bill.

Does gas turn off when pilot goes out?

This is because all modern gas appliances with pilot lights have a fail-safe device that closes off the gas to the appliance in the case when the pilot may go out. … If the pilot light goes out for any reason, the current stops, the valve closes, thus preventing any gas from leaking.

How do you purge air from gas logs?

While pressing the valve control knob in, press the igniter button repeatedly until the pilot ignites. This could take anywhere from one to 10 minutes to bleed air out of the lines as the gas starts to flow. Once the pilot is lit, continue to press the valve knob inward for 30 seconds before releasing it.

Do you need to bleed propane lines?

It’s important to bleed out the gas lines, or ‘purge’ them, to ensure that all air pockets are removed. If you do not bleed your gas lines and there are air pockets in the lines your appliances may not start.

Can gas fireplaces explode?

Although convenient, these home gas fireplaces pose significant risk of explosions and house fires if they are improperly installed or maintained. Gas Fireplace leaks can result in carbon monoxide poisoning, but can also result in explosions that can level an entire neighborhood block.

Can I leave gas fireplace on all night?

The short answer is this: gas fireplaces that are fully vented and have safely and properly sealed glass fronts are fine to be left alone to run continuously.

How many hours can you run a gas fireplace?

But how long can you keep it running? According to the National Fire Protection Association, gas fireplaces should be turned off when unattended for more than 30 minutes. If you want to run it longer than that, then we recommend using an automatic turn-off device or unplugging the fireplace before leaving the room.

How long does it take for gas logs to light?

Lighting your pilot With control knob in, push the piezo ignitor in continuously until pilot ignites (every 3-5 seconds). Once pilot flame is lit*, keep knob pushed in for 60 seconds.

How long does it take for a fireplace to turn on?

It takes a fireplace blower about 10-20 minutes to complete the process of it turning on and off. A fireplace blower cannot turn on and off instantly like a light bulb. When you turn on your fireplace, the firebox begins to heat up.

Does the pilot light stay on in a gas fireplace?

Most gas fireplaces rely on a “continuous pilot light,” a type of pilot that remains lit so long as gas is flowing to the unit. Some newer, more energy-efficient models rely on an electronic ignition that only lights the pilot when the fireplace itself is turned on.

How much does gas logs cost to install?

Cost of Gas Log Installation Gas log installation usually costs between $200 and $350. You might pay an extra $100 or less for a permit. Your fireplace installer or a gas line plumber near you can get a gas work permit for you if your city requires it.

How much does it cost to install Vented gas logs?

If you currently have a wood fireplace in your home, it can be transformed into a vented gas unit by installing gas logs, which can cost around $200-$1,000. Once these logs are installed, the gases from the fire will travel up the chimney and out of the house.

How long do ventless gas logs last?

If you have a vented fireplace with ceramic logs, that’s well-maintained, your log set can last a very long time, maybe even ten years or more. However, if you have a ventless fireplace with ceramic logs, and it’s well maintained, those will generally have a 3-5 year lifespan.