How do I know if my gas fireplace is working properly?

Author: Vicenta Moen  |  Last update: Wednesday, September 24, 2025

4 Warning Signs Your Gas Fireplace Is Faulty
  1. Recurrent Soot Build-Up. Whether using a custom gas fireplace with a vent or a vent-free one, excessive soot build up should be avoided. ...
  2. Smell of Gas or Burning Wires. ...
  3. Malfunction of the Pilot Light. ...
  4. Switching On and Off.

How to check if a gas fireplace is working?

The 5 Most Critical Tests in Gas Fireplace Maintenance
  1. Test the Gas Line. First, the gas line needs to be tested to make sure it is working properly. ...
  2. Clean and Inspect the Pilot Assembly. ...
  3. Check the Thermocouple Millivolts. ...
  4. Check the Ignition Control Sequences. ...
  5. Check the Operation of Safely Controls.

What is the most common problem with a gas fireplace?

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.

How to get a gas fireplace checked?

Skip the plumbers. Call a fireplace company ask for a cleaning service and mention you also want an inspection while you're at it. It'll be around $100 or so per unit and take about 30 min. They're all gas line certified. Normally they don't inspect the gas lines but they will if you ask.

How do I know if my gas fireplace is safe to use?

How do I make sure my gas fireplace is safe?
  • Check for a safety screen barrier.
  • Keep children and pets at a distance.
  • Leave 3 feet between the gas fireplace and flammable objects.
  • Schedule a yearly inspection.
  • Hire an authorized dealer when installing your gas fireplace.
  • Install a carbon monoxide detector.

How to Inspect Your Fireplace 🔥

What does a healthy gas fireplace flame look like?

A healthy, properly burning flame on gas appliances should be blue in color, sometimes with a tiny tip of yellow, with a little light blue triangle at the center. This blue color flame indicates that there is safe, efficient and more complete fuel combustion.

Should I crack a window when using a gas fireplace?

Prevent carbon monoxide (CO) build-up.

An open window can help to vent the gas, and this is especially important in newer homes that were likely built with airtight construction techniques. This means that gases have no way to escape, including CO.

Does a gas fireplace require maintenance?

Maintenance is essential for both the longevity of your fireplace and also for its safe operation. It is highly recommended that you contact a licensed gas service provider to conduct maintenance on your fireplace at least once per year.

Why is my gas fireplace not getting gas?

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.

How do I test my fireplace?

Easy Steps to Make Sure Your Fireplace Is Safe
  1. Check Exterior for Masonry Cracks. Winter precipitation and below-freezing temperatures can be brutal for masonry chimneys. ...
  2. Make Sure Chimney Cap is Secure. ...
  3. Check for Creosote Buildup. ...
  4. Examine the Firebox. ...
  5. Look for Water Stains. ...
  6. Test the Damper.

Should I hear the gas in my fireplace?

Noises occur because the high-pressure flow of the gas through the tubing is disrupted. In order to avoid obstructions, make sure to keep the fireplace as clean as possible. If the above solutions don't work and the noise is still occurring, then the help of a professional is required.

What is the lifespan of a gas fireplace?

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.

When should I be worried about a gas fireplace?

If you notice an electrical burning smell or an odor of burning gas, turn off your fireplace, open the doors and windows and call for emergency repairs.

How much does a gas fireplace inspection cost?

Most of the cleaning for a gas fireplace can be done on your own when the fireplace is cool and the pilot light is off. However, because of the vent, you will need an annual inspection which costs around $75-$100. If you want a thorough cleaning at the same time the cost could be closer to $150-$175.

How do I know if my thermocouple is bad on my gas fireplace?

Common Signs of a Failing Thermocouple

Here are some common indicators: Difficulty Lighting the Fireplace: If you struggle to light your fireplace, or if it takes several tries to keep the pilot lit, it could suggest that the thermocouple is not sensing the flame correctly and is failing to keep the gas supply open.

Who do I call if my gas fireplace isn't working?

If your own troubleshooting fails to solve the problem, you should call a fireplace service company near you for help. Most service calls for gas fireplaces cost about $100, and repairs for pilot lights cost $150 on average.

Why is there no gas coming into my fireplace?

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.

Is it OK to run gas fireplace all day?

If you have either a gas fireplace insert or a direct vent fireplace, you should be able to leave your fireplace on continuously throughout the day.

How to service a gas fireplace?

Table of Contents
  1. Clean Glass Windows Or Doors.
  2. Dust Fireplace Mantel & Surrounding Area.
  3. Clean Gas Logs.
  4. Check the Condition Of Gas Logs.
  5. Clean Airflow & Louvers.
  6. Check The Pilot Light.
  7. Vacuum The Firebox & Surrounding Areas.
  8. Replace Batteries In The Remote & Receiver.

Should doors be open or closed on a gas fireplace?

It's important to remember that your glass doors should always remain open when burning gas logs.

Should a gas fireplace have a screen?

Safety Screens

All gas fireplaces should have a protective screen over the glass. Screens reduce risks of serious burns by creating a barrier that prevents skin from coming into direct contact with the hot glass. Keep in mind, however, that screens can also retain heat, so touching them isn't advised.

Can I use my fireplace if it has a crack in it?

Ignoring firebox damage puts your home and family at risk of fire and carbon monoxide poisoning. Also, if the cracks are large enough, burning embers can come through and contact the wall behind it. Another concern over cracks in the firebox is the chance that gases and carbon monoxide can leak out into your home.

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