Gas Fire Pit Flame Height: Achieving the Perfect Flame

One of the most common questions we get from people is concerning their gas fire pit flame height. We’ll also address “gas fireplace flames too low” for a comprehensive guide.

Understanding Gas Fire Pit Flame Height Expectations

What is a Reasonable Flame Height?

We expect a minimum flame height of 6” at the center of your fire pit from a standard fire pit burner. Anything less than that, we consider unacceptable. However, with sufficient gas for its BTU rating and required pressure, the flame height could reach up to 12″. However, more recently Nozzle burners such as the Torpedo Burners from HPC may give you a flame of up to 22″, and Bullet Burners from The Outdoor Plus, up to an impressive 18″ flame.

A fire pit with poor flame height

A good fire pit flame

Factors Affecting Gas Fire Pit Flame Height

Gas Supply and Pressure

Nine out of ten times, poor flame height is directly related to the gas supply. Distance from the gas source, pipe diameter, and pipe bends all impact gas pressure and volume. Insufficient gas can lead to poor burner performance and reduced flame height.

Fire Pit Location and Design

Nine out of ten times, poor flame height is directly related to the gas supply. Distance from the gas source, pipe diameter, and pipe bends all impact gas pressure and volume. Insufficient gas can lead to poor burner performance and reduced flame height.

Troubleshooting Low Flame Height: Gas Fire Pits and Fireplaces

Addressing “Gas Fireplace Flames Too Low”

Nine out of ten times, poor flame height is directly related to the gas supply. Distance from the gas source, pipe diameter, and pipe bends all impact gas pressure and volume. Insufficient gas can lead to poor burner performance and reduced flame height.

• Regulator Issues: A faulty gas regulator can restrict gas flow.
• Ventilation Problems: Blocked or improperly sized vents can affect combustion.
• Gas Valve Malfunctions: A malfunctioning gas valve may not deliver sufficient gas.
• Pilot Light Problems: A weak or inconsistent pilot light can result in low flames.
• Accumulated Dust and Debris: Dust and debris can clog burner ports.

Troubleshooting Steps:

1. Check the pilot light for a strong, consistent flame.
2. Inspect the vents for any obstructions.
3. Listen for any unusual sounds from the gas valve or regulator.
4. If possible, visually inspect the burner ports for blockages.

Safety Note: Gas fireplace troubleshooting should only be performed by a qualified gas technician. Contact a professional to address any gas-related issues.

Remedies for Low Flame Height in Fire Pits

If your fire pit has always had low flames, it’s likely a gas supply or burner issue. If the flames were previously adequate, maintenance may be needed:

1. Remove fire glass/lava rocks and clean burner holes with a pin or paper clip.
2. Use compressed air to clear gas pipes.
3. For electronic ignition or flame-sensing systems, consult the manufacturer’s manual.
4. Consider a smaller burner with a lower BTU rating if gas supply is limited. Every fire pit burners BTU rating must match its gas input for optimal flame size. Bigger burners do not give bigger flames if they do not get the gas they need!

Planning for Optimal Flame Height

The Importance of a Qualified Gas Technician

Consult a gas technician early in the design phase to determine correct pipe size and assess gas capacity. They can prevent gas supply issues and ensure a safe, efficient setup.

Conclusion: Achieving Ideal Gas Fire Pit and Fireplace Flames

Purchasing the right burner (BTU rating) and ensuring adequate gas pressure are crucial for optimal flame height. Addressing “gas fireplace flames too low” involves unique considerations related to venting and indoor gas lines. Always consult a qualified gas technician for safe and effective solutions.

Further Information

For further information on Fire Pit Gas Pipe Sizing, read our post Gas Pipe Size for Fire Pits

FAQ:

Q: Why is my gas fire pit flame so low?

A: It’s likely due to insufficient gas supply, incorrect pipe sizing, or a burner with too high a BTU rating for the available gas

Q: Can I fix low flames in my gas fireplace myself?

A: No, gas fireplace troubleshooting should only be performed by a qualified gas technician due to safety concerns.

Q: What is a good flame height for a gas fire pit?

A: From a traditional, non-nozzle type burner, a minimum of 6 inches is expected, but with proper gas supply, it can reach up to 12 inches or more. Utilizing a Nozzle style burner, you can expect flames at 18 inches or more.

Contact us today for a consultation on your gas fire pit or fireplace needs.

The dimensions presented above are approximate measurements of common-size propane cylinders found in service today. The measurements are not exact so contact your propane company or container manufacturer for precise cylinder dimensions.

The information above is courtesy of Propane 101