How To Convert Propane Fire Pit To Natural Gas
Imagine cozy evenings gathered around a flickering fire pit, sharing stories and making memories. For many outdoor enthusiasts, a fire pit is the heart of their backyard oasis or an essential comfort for their homestead. But constantly refilling heavy, cumbersome propane tanks can quickly turn that idyllic vision into a chore.
If you’re tired of running out of fuel mid-s’more session or lugging tanks to the refill station, it might be time for an upgrade. Learning how to convert propane fire pit to natural gas offers a continuous, convenient fuel supply directly from your home’s gas line. This guide will walk you through the process, helping you achieve that endless flame without the hassle.
Making this switch means saying goodbye to propane tank worries and hello to a more permanent, reliable, and often more cost-effective outdoor heating solution. Get ready to transform your fire pit experience and enjoy hassle-free warmth for years to come.
Table of Contents
Understanding the Basics: Propane vs. Natural Gas Fire Pits
Before you grab your tools, it’s crucial to understand the fundamental differences between propane and natural gas. These two fuels operate under different pressures and require specific components for safe combustion.
Propane, or liquid petroleum gas (LPG), is stored under high pressure in tanks. It delivers a higher BTU (British Thermal Unit) output per cubic foot compared to natural gas.
Natural gas, on the other hand, is delivered at much lower pressure directly from a utility line. This difference in pressure is the primary reason why a conversion kit is essential.
Pressure and Orifice Size
Propane systems use a regulator to reduce high tank pressure to a manageable level for the burner. The burner orifice, a small brass fitting, is sized specifically for propane’s higher pressure and BTU output.
Natural gas systems operate at a much lower pressure, typically around 7 inches of water column. A larger orifice is needed to allow enough natural gas to flow through and achieve the desired flame size and heat output.
Attempting to run natural gas through a propane orifice will result in a tiny, weak flame, while running propane through a natural gas orifice is extremely dangerous due to excessive fuel flow and potential for large, uncontrolled flames.
Is Your Propane Fire Pit Convertible? Assessing Compatibility
Not all propane fire pits are created equal, and some are easier to convert than others. Checking your specific model’s compatibility is the first practical step.
Most reputable fire pit manufacturers offer conversion kits or clear guidelines on whether their units can be safely switched. Always consult your owner’s manual or the manufacturer’s website first.
Look for phrases like “NG convertible” or “natural gas conversion kit available.” If your manual explicitly states the unit is not convertible, do not proceed. Safety is paramount when working with gas.
Key Components to Check
Examine your fire pit’s burner and valve system. A good candidate for conversion will typically have a removable orifice on the burner assembly.
The control valve itself may or may not need to be replaced, depending on its design. Some valves are universal, while others are fuel-specific. Your conversion kit will address this.
Consider the overall condition of your fire pit. If it’s old, rusty, or shows signs of wear and tear, investing in a new natural gas unit might be a safer and more reliable option.
Essential Tools and Materials for Your Conversion Project
Gathering the right tools and materials before you start saves time and ensures a smooth, safe conversion. You’ll need more than just the fire pit itself.
- Natural Gas Conversion Kit: This is the most critical item. It typically includes a new natural gas orifice, a longer natural gas hose, and possibly a quick-connect fitting or a new regulator/valve.
- Adjustable Wrenches: You’ll need these to loosen and tighten gas fittings. Have at least two on hand for counter-torque.
- Pipe Thread Sealant or PTFE Tape: Specifically rated for gas lines. This is crucial for creating leak-free connections.
- Leak Detector Solution: A spray bottle of soapy water (dish soap and water) or a commercial leak detection fluid.
- Safety Glasses and Work Gloves: Always protect your eyes and hands.
- Screwdriver Set: For accessing internal components or panels.
- Flashlight: Useful for working in tight or dimly lit areas.
- A Helper: While not strictly a tool, having an extra set of hands can make the process easier and safer, especially during leak testing.
Ensure all components in your conversion kit are compatible with your specific fire pit model. Generic kits might not fit correctly or meet safety standards.
Step-by-Step Guide: How to Convert Propane Fire Pit to Natural Gas Safely
This section provides a detailed, actionable plan for the conversion. Remember, working with gas lines requires meticulous attention to detail and a commitment to safety. If you are ever unsure, call a certified gas technician.
Step 1: Prioritize Safety and Preparation
Before touching anything, ensure the propane tank is completely disconnected and removed from the fire pit. Turn off the gas supply at the main valve if you are connecting to an existing natural gas line.
Work in a well-ventilated area. Have a fire extinguisher nearby, just in case. Read your fire pit’s manual and the conversion kit instructions thoroughly before beginning.
Clear your workspace of any flammable materials. This isn’t just a DIY project; it’s a safety-critical procedure that demands your full attention.
Step 2: Disconnect Propane Components
Locate the connection point where the propane hose attaches to the fire pit’s burner assembly or control valve. Use your adjustable wrenches to carefully loosen and remove the propane hose and regulator assembly.
Take care not to strip any threads. Keep these propane components organized; you might want to revert the fire pit later or use them for another propane appliance.
Sometimes, the orifice is located directly within the burner assembly itself, requiring you to access the underside of the fire pit or remove the burner pan.
Step 3: Replace the Propane Orifice with the Natural Gas Orifice
This is the most critical part of how to convert propane fire pit to natural gas. The conversion kit will include a new, larger natural gas orifice.
Carefully remove the smaller propane orifice. It’s typically a small brass fitting that screws into the burner inlet or just before it. Use a wrench or screwdriver as needed, depending on the orifice design.
Thread the new natural gas orifice into place. Ensure it is snug but do not overtighten, as this can damage the threads. A proper seal is vital here.
Step 4: Connect the Natural Gas Hose and Fittings
Attach the new natural gas hose from your conversion kit to the fire pit’s control valve or burner inlet. If your kit includes a new regulator or valve assembly, install that according to the instructions.
Apply gas-rated pipe thread sealant or PTFE tape to all threaded connections. Wrap the tape clockwise (the direction the fitting will turn) 2-3 times, ensuring it doesn’t extend into the gas pathway.
Connect the other end of the natural gas hose to your home’s natural gas supply line. This usually involves a quick-connect fitting or a direct threaded connection. Ensure all connections are secure and tight using two wrenches for counter-torque.
Step 5: Perform a Thorough Leak Test
This step is non-negotiable and absolutely crucial for safety. Turn on the main natural gas supply to the fire pit line.
With the fire pit’s control valve in the OFF position, spray all new gas connections generously with your leak detector solution (soapy water). Look for bubbles forming at any connection point.
Even small bubbles indicate a leak. If you see any, immediately turn off the gas supply, tighten the connection, reapply sealant, and test again. Repeat until no bubbles appear at any connection.
Do not proceed to ignition until you are 100% confident there are no leaks. Natural gas leaks are extremely dangerous.
Step 6: Test Fire Your Converted Fire Pit
Once you’ve confirmed there are no leaks, you can attempt to light the fire pit. Follow your fire pit’s normal ignition procedure.
Turn the control valve slowly to the ON/LIGHT position and ignite the burner with a long lighter or igniter. The flame should be steady, blue at the base, and yellow at the tips, without excessive roaring or sputtering.
Adjust the flame height with the control knob. Observe the flame for a few minutes to ensure stable operation. If the flame is weak or inconsistent, recheck the orifice and gas supply pressure.
Maintaining Your Converted Fire Pit for Years of Enjoyment
Proper maintenance ensures your natural gas fire pit remains safe and performs optimally for many seasons. It’s a simple routine that pays off in longevity and peace of mind.
Regularly inspect all gas connections for any signs of wear, corrosion, or loosening. Annually, perform a quick leak test with soapy water, especially after the unit has been stored or unused for an extended period.
Keep the burner ports clean and free of debris. Ash, dust, or small insects can clog the ports, leading to uneven flames or ignition issues. Use a soft brush or compressed air to clear them.
Protect your fire pit from the elements with a durable cover when not in use. This prevents moisture and debris from entering the gas components and prolongs the life of the entire unit.
Troubleshooting Common Conversion Challenges
Even with careful planning, you might encounter minor issues after converting. Here are some common problems and their solutions.
Low Flame or No Ignition
If your flame is weak or won’t light, first check your natural gas supply. Ensure the main gas valve to the fire pit is fully open. Then, recheck the orifice to confirm it’s the correct natural gas orifice and is not obstructed.
Sometimes, air can get trapped in the gas line after installation. Allow the gas to flow for a minute or two with the igniter held, to purge any air before attempting to light again.
Verify that your gas line pressure is adequate. If other natural gas appliances in your home are working fine, the issue is likely with the fire pit connection or orifice.
Uneven Flames
Uneven flames typically indicate partially clogged burner ports. Turn off the gas and allow the fire pit to cool completely.
Use a small wire brush or a toothpick to carefully clear any debris from the individual burner holes. Be gentle to avoid damaging the burner.
After cleaning, test fire the unit again. If the problem persists, the burner itself might be damaged and may need replacement.
Smell of Gas
If you detect a gas smell at any time, immediately turn off the main gas supply to the fire pit. Evacuate the area and do not attempt to ignite the fire pit or any other appliance.
Perform a thorough leak test on all connections again. If you cannot find or fix the leak, or if the smell persists, contact a qualified gas technician or your local gas utility company immediately. Do not take risks with gas leaks.
Frequently Asked Questions About How to Convert Propane Fire Pit to Natural Gas
Here are answers to common questions about converting your fire pit.
Can I convert any propane fire pit to natural gas?
No, not all propane fire pits are convertible. Always check your fire pit’s owner’s manual or the manufacturer’s website for specific compatibility information. Look for “NG convertible” or availability of a natural gas conversion kit.
Do I need a professional to convert my fire pit?
While this guide provides detailed steps, working with gas lines carries inherent risks. If you are uncomfortable with the process, lack experience, or encounter any difficulties, it is always recommended to hire a qualified and licensed gas technician. Your safety is paramount.
What is the main difference between propane and natural gas conversion kits?
The primary difference lies in the orifice size and the type of hose/regulator. Natural gas operates at lower pressure and requires a larger orifice to allow sufficient fuel flow. Propane operates at higher pressure and uses a smaller orifice, often with a regulator that connects directly to the tank.
Is natural gas cheaper than propane for a fire pit?
In most regions, natural gas is significantly cheaper than propane on a per-BTU basis. While the initial cost of installing a natural gas line can be higher, the long-term fuel savings and convenience often make it a more economical choice for frequent use.
What should I do if I smell gas after the conversion?
If you smell gas, immediately turn off the main natural gas supply to the fire pit. Do not light any flames or operate any electrical switches. Evacuate the area and contact a qualified gas technician or your local gas utility company immediately. Do not attempt to find or fix the leak yourself if you are unsure.
Converting your propane fire pit to natural gas is a rewarding project that can significantly enhance your outdoor living experience. It eliminates the hassle of propane tanks, offering a continuous, convenient, and often more cost-effective fuel source for endless fires.
By following these detailed steps, prioritizing safety, and understanding the nuances of gas conversion, you can confidently make the switch. Remember to always consult your fire pit’s manual and, when in doubt, call a professional.
Enjoy the warmth, convenience, and endless ambiance of your newly converted natural gas fire pit. Stay safe and stay comfortable!
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