The “Boom” sound is one of the scariest experiences for property owners.
It is a sound you might not be expecting.
If this happens, it becomes important to know why the gas fireplace starts with a boom.
A gas fireplace that starts with a boom is likely dealing with a lack of gas supply. This can be due to a malfunctioning gas valve and/or the main gas line being compromised. To fix the issue, inspect the gas valve for damage and check the burner. This will indicate where the problem lies.
If the issue cannot be resolved, do not keep using the gas fireplace that is making a booming sound every time you turn it on.
Instead, you will have to take the time to figure out what is the root cause.
This guide will explain how to fix a gas fireplace that starts with a boom.
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How To Fix Gas Fireplace That Starts With A Boom
1. Check Gas Valve
The gas fireplace boom sound is one of those experiences you are going to be startled by at first.
It happens in some cases and you have to pay attention.
Don’t continue to use the gas fireplace when it continues to make this type of sound. The best approach is to check the gas valve and ensure everything works as planned.
Try turning the gas valve to see where the connection issue lies. Is the gas valve damaged in any way, shape, or form? What about the gas line that is connecting to the gas valve?
These are key details that will shed light on what is happening with the gas fireplace.

2. Inspect Burner
With the gas fireplace, you might have to turn off the supply.
This will let you take a detailed look at what is going on with the fireplace. This includes how the burner functions when you take it apart.
To do this, you will want to turn off the gas line, remove the logs, and then access the burner near the bottom of the fireplace.
This is a must.
It is the only way to make sure the gas fireplace is not compromised in any manner. This can happen when you are not careful.
Look at the key details including how the burner is doing and whether or not it is clean. Sometimes, the booming sound can get exaggerated when the burner is messy due to soot and/or debris.
3. Check The Gas Supply
You will also want to take a look at the gas line.
This is one of the main issues that come along with a gas fireplace that makes a booming sound.
You have to be careful about this step. You can’t have a situation where the gas supply is compromised as that can lead to a fire breaking out and is a real safety hazard.
Take a step back and inspect each part of the gas line.
If you feel it is deeper in the gas fireplace, it’s time to call in a specialist that can take a deeper look at the line itself.

Why Does My Gas Fireplace Pop When I Turn It On?
A gas fireplace can pop when turned on because of a delayed gas line. This is due to reduced gas pressure inside the fireplace. To fix the issue, turn off the gas supply, inspect the gas valve, check the burner on the floor of the gas fireplace, and then inspect the line to see which part is damaged.
This is the best way to make sure the gas fireplace does not make a booming sound every time it is turned on.
Be careful about the process and don’t try to fix the issue without turning off the gas supply.
Final Thoughts
These are the reasons your gas fireplace starts with a boom.
A gas fireplace that starts with a boom is caused due to a delayed gas line. This includes damage to the gas valve, burner, and/or the gas line itself. To fix the issue, inspect each of these elements after turning off the gas supply.
If you don’t take the time to look into this, the sound may continue to come.
It is highly recommended to consult with a specialist if you can’t seem to find the damaged component within a gas fireplace. It’s the only way to ensure things are done the right way and nothing gets worse.
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