Propane grills are a backyard staple, offering portability and convenience. But what if you have a natural gas line readily available and want to ditch the propane tanks? The question then arises: can you convert a propane grill to natural gas? The short answer is: sometimes. The longer answer is more complex, involving safety considerations, compatibility checks, and the potential need for professional assistance. This article dives deep into the world of gas grill conversions, providing you with the knowledge you need to make an informed decision.
Understanding the Differences Between Propane and Natural Gas
Before even considering a conversion, it’s crucial to understand the fundamental differences between propane and natural gas. They are not interchangeable without modification due to their varying chemical compositions and, most importantly, their pressure and BTU output.
Propane, also known as Liquefied Petroleum Gas (LPG), is stored in liquid form under high pressure within the tank. When released, it vaporizes into a gas and burns with a higher BTU (British Thermal Unit) content than natural gas. Higher BTU means more heat output for the same volume of gas.
Natural gas, primarily methane, is delivered through pipelines at a much lower pressure. It burns cleaner than propane but produces less heat per cubic foot.
These differences in pressure and BTU require specific grill components designed for the particular gas type. Attempting to use a propane grill with natural gas without conversion can result in a weak, inconsistent flame, and in some cases, pose a safety hazard.
Is Your Grill a Candidate for Conversion?
Not all propane grills are created equal, and not all are suitable for natural gas conversion. Before purchasing a conversion kit or attempting any modifications, determine if your grill is a viable candidate.
Checking the Manufacturer’s Guidelines
The first and most crucial step is to consult your grill’s owner’s manual or the manufacturer’s website. Some grill manufacturers offer conversion kits specifically designed for their models. These kits usually contain the necessary components and detailed instructions, ensuring a safer and more efficient conversion. If the manufacturer explicitly states that your grill model is not convertible, it’s best to heed their warning. Ignoring this advice can void your warranty and potentially create a dangerous situation.
Assessing the Grill’s Construction and Burners
Even if the manufacturer doesn’t offer a conversion kit, a careful inspection of the grill’s construction can offer clues. Look for these features:
- Adjustable Burner Valves: These valves control the gas flow to the burners. Adjustable valves are essential for fine-tuning the flame after conversion.
- Burner Orifices: These small openings in the burners regulate the amount of gas that enters. They are usually replaceable, which is necessary when switching between propane and natural gas.
- Regulator Compatibility: The gas regulator, which controls the pressure of the gas entering the grill, must be compatible with natural gas pressure.
Grills with simple, basic burner designs are often easier to convert than those with complex, integrated systems.
Understanding the Risks of DIY Conversion
While DIY conversions are possible, they come with inherent risks. Tampering with gas appliances can be dangerous, leading to gas leaks, fires, or explosions. It is strongly recommended that you hire a qualified gas technician to perform the conversion if you are not comfortable working with gas lines and appliances. DIY conversions may also violate local codes and regulations, leading to fines or insurance complications.
Gathering the Necessary Conversion Components
If your grill is deemed suitable for conversion, you’ll need the right components. These typically include:
Natural Gas Conversion Kit
A comprehensive conversion kit is the ideal starting point. These kits often include:
- New Burner Orifices: These orifices have a larger diameter than propane orifices to accommodate the lower pressure of natural gas.
- Natural Gas Regulator: This regulator reduces the pressure of the natural gas from the supply line to the correct level for the grill.
- Hose and Fittings: A natural gas hose and appropriate fittings to connect the grill to the gas supply.
- Instructions: Detailed instructions on how to perform the conversion.
The table below provides example orifice sizes. Note that these are examples, and the correct size is specific to the grill model and BTU rating.
| Gas Type | Orifice Size Example |
|---|---|
| Propane | #55 Drill Size |
| Natural Gas | #45 Drill Size |
Individual Components (If a Kit Isn’t Available)
If a conversion kit isn’t available for your specific grill model, you may need to purchase the components separately. This requires more research and careful selection to ensure compatibility.
- Correct Orifice Sizes: Determining the correct orifice size for natural gas is crucial. This depends on the BTU rating of each burner. Consult a gas technician or online resources to find the appropriate size.
- Natural Gas Regulator: Choose a regulator specifically designed for natural gas and with the correct pressure output for your grill.
- Natural Gas Hose: Ensure the hose is rated for natural gas and has the correct fittings for your grill and gas supply.
- Pipe Thread Sealant: Use a gas-rated pipe thread sealant to ensure airtight connections.
The Conversion Process: A Step-by-Step Guide
The conversion process involves several key steps. Always prioritize safety and consult the manufacturer’s instructions (if available).
Disconnecting the Propane Tank and Regulator
Begin by disconnecting the propane tank and regulator from the grill. Ensure the propane tank is stored safely away from the work area.
Replacing the Burner Orifices
This is the most critical step. Locate the burner orifices, usually found where the gas line connects to the burners. Remove the propane orifices using a wrench or socket. Install the new natural gas orifices, ensuring they are securely tightened. Do not overtighten.
Installing the Natural Gas Regulator
Replace the propane regulator with the natural gas regulator. Ensure the connections are tight and sealed with gas-rated pipe thread sealant.
Connecting the Natural Gas Hose
Connect the natural gas hose to the grill and the natural gas supply line. Again, use pipe thread sealant to ensure airtight connections. Before turning on the gas, check all connections for leaks using a soapy water solution. Bubbles indicate a leak.
Adjusting the Burner Valves (If Applicable)
If your grill has adjustable burner valves, fine-tune them to achieve the desired flame height and heat output. The flame should be blue with a small yellow tip.
Safety Precautions and Considerations
Safety is paramount when working with gas appliances. Adhere to these precautions:
- Work in a Well-Ventilated Area: This will prevent the buildup of gas fumes.
- Use the Right Tools: Use appropriate wrenches and sockets to avoid damaging the fittings.
- Check for Leaks: Always check for leaks after making any connections.
- Follow Local Codes and Regulations: Ensure your conversion complies with local codes and regulations.
- Consider Professional Installation: If you are unsure about any step, hire a qualified gas technician. A professional can ensure the conversion is done safely and correctly.
Benefits of Converting to Natural Gas
Despite the complexities of the conversion process, switching to natural gas offers several advantages:
- Convenience: No more running out of propane in the middle of a barbecue. Natural gas provides a continuous supply.
- Cost Savings: Natural gas is often cheaper than propane, especially for frequent grillers.
- Environmental Friendliness: Natural gas burns cleaner than propane, producing fewer greenhouse gas emissions.
Troubleshooting Common Conversion Issues
Even with careful planning and execution, you may encounter issues after the conversion.
Low Flame Height
This is a common problem. It usually indicates that the orifices are not the correct size or the gas pressure is too low. Double-check the orifice size and ensure the regulator is functioning correctly.
Uneven Flame
Uneven flame can be caused by blocked burner ports or incorrect orifice alignment. Clean the burner ports with a wire brush and ensure the orifices are properly positioned.
Gas Leaks
If you detect a gas leak, immediately turn off the gas supply and ventilate the area. Locate the source of the leak and tighten the connections or replace the faulty component. Never use an open flame to check for gas leaks.
The Final Verdict: Is It Worth Converting?
Converting a propane grill to natural gas can be a worthwhile endeavor, offering convenience and potential cost savings. However, it requires careful planning, attention to detail, and a commitment to safety. Assess your grill’s suitability, gather the necessary components, and follow the instructions meticulously. If you are unsure about any step, don’t hesitate to seek professional help. Prioritize safety above all else.
Maintaining Your Natural Gas Grill
Once the conversion is complete, regular maintenance is crucial to ensure optimal performance and longevity. Clean the burners regularly to remove debris and grease buildup. Inspect the hose and fittings for any signs of wear or damage. And always store the grill in a safe and dry location. With proper care, your converted natural gas grill will provide years of reliable service.