How to Convert Natural Gas Grill to Propane: A Comprehensive Guide

Converting a natural gas grill to propane is a task that many grill enthusiasts consider at some point. Whether you’re moving to a new home without a natural gas line or simply prefer the convenience of propane tanks, understanding the conversion process is essential. This guide will walk you through the steps, considerations, and potential pitfalls of converting your natural gas grill to propane.

Understanding the Basics

Before diving into the conversion process, it’s crucial to understand the fundamental differences between natural gas and propane grills. Natural gas grills are connected to a home’s natural gas line, providing a continuous fuel supply. Propane grills, on the other hand, use portable tanks that need to be refilled or replaced periodically.

Key Differences:

• Pressure: Natural gas operates at a lower pressure than propane.
• Orifice Size: The orifices (the small holes where the gas exits) in natural gas grills are larger than those in propane grills.
• Fuel Efficiency: Propane contains more energy per unit volume than natural gas, which means it burns hotter and more efficiently.

Step-by-Step Conversion Guide

1. Gather Necessary Tools and Parts

• Conversion Kit: Most grill manufacturers offer conversion kits specifically designed for their models. These kits typically include new orifices, regulators, and sometimes hoses.
• Wrenches: You’ll need a set of wrenches to remove and replace parts.
• Screwdrivers: Both flathead and Phillips screwdrivers may be required.
• Pipe Thread Sealant: This ensures a tight seal on threaded connections.

2. Turn Off the Gas Supply

• Natural Gas Grill: Disconnect the grill from the natural gas line.
• Propane Grill: Ensure the propane tank valve is closed.

3. Remove the Existing Burners and Orifices

• Burners: Carefully remove the burners from the grill. This may involve unscrewing them or lifting them out, depending on the model.
• Orifices: Use a wrench to remove the natural gas orifices. These are usually located at the base of the burners.

4. Install the New Propane Orifices

• Replacement: Insert the new propane orifices into the burner tubes. Ensure they are securely tightened.
• Sealant: Apply pipe thread sealant to the threads of the orifices to prevent leaks.

5. Replace the Regulator

• Natural Gas Regulator: Remove the existing natural gas regulator.
• Propane Regulator: Install the new propane regulator that came with your conversion kit. Ensure it is securely attached and properly aligned.

6. Reassemble the Grill

• Burners: Reinstall the burners in their original positions.
• Hoses: Connect the new propane hose to the regulator and the grill. Ensure all connections are tight and secure.

7. Test for Leaks

• Soapy Water Test: Apply a mixture of soapy water to all gas connections. If bubbles form, there is a leak. Tighten the connection and retest.
• Ignition Test: Turn on the propane tank and ignite the grill. Check for consistent flame and proper burner operation.

8. Adjust the Air Shutters

• Air Shutters: These control the air-to-gas ratio. Adjust them to ensure a clean, blue flame. A yellow or orange flame indicates incomplete combustion and may require further adjustment.

Safety Considerations

1. Follow Manufacturer Instructions

• Always refer to the grill’s manual and the conversion kit instructions. Each grill model may have specific requirements.

2. Check Local Codes and Regulations

• Some areas have regulations regarding gas grill conversions. Ensure your conversion complies with local codes.

3. Use Proper Ventilation

• Always operate your grill in a well-ventilated area to prevent the buildup of harmful gases.

4. Regular Maintenance

• After conversion, regularly inspect your grill for leaks, wear, and tear. Replace any damaged parts immediately.

Pros and Cons of Conversion

Pros:

• Portability: Propane tanks allow you to move your grill easily.
• Availability: Propane is widely available and can be purchased at many retail locations.
• Heat Output: Propane burns hotter than natural gas, which can be beneficial for certain cooking techniques.

Cons:

• Cost: Propane can be more expensive than natural gas over time.
• Refills: You’ll need to monitor and refill or replace propane tanks regularly.
• Conversion Complexity: The conversion process can be complex and may require professional assistance.

Frequently Asked Questions (FAQs)

1. Can I convert any natural gas grill to propane?

• Most natural gas grills can be converted to propane, but it depends on the manufacturer and model. Always check with the manufacturer or consult the grill’s manual.

2. Do I need a professional to convert my grill?

• While many grill enthusiasts can perform the conversion themselves, those unfamiliar with gas systems should consider hiring a professional to ensure safety and proper installation.

3. How much does a conversion kit cost?

• Conversion kits typically range from $20 to $100, depending on the grill model and manufacturer.

4. Will converting my grill affect its warranty?

• Converting your grill may void the manufacturer’s warranty. Check the warranty terms before proceeding with the conversion.

5. Can I switch back to natural gas after converting to propane?

• Yes, but you’ll need to purchase a natural gas conversion kit and follow the same steps in reverse.

6. How do I know if my grill is compatible with a conversion kit?

• Check the grill’s manual or contact the manufacturer. They can provide information on compatible conversion kits and any specific instructions for your model.

7. What should I do if I smell gas after conversion?

• If you smell gas, turn off the propane tank immediately and check for leaks using the soapy water test. If you cannot locate or fix the leak, contact a professional.

8. How often should I check for leaks after conversion?

• It’s a good practice to check for leaks every time you reconnect the propane tank or after any maintenance work on the grill.

9. Can I use a natural gas hose with a propane grill?

• No, natural gas hoses are not compatible with propane. You must use a hose specifically designed for propane.

10. What is the lifespan of a propane tank?

• Propane tanks typically last 12 years from the date of manufacture. After this period, they must be recertified or replaced.

By following this comprehensive guide, you can successfully convert your natural gas grill to propane, ensuring many more years of enjoyable outdoor cooking. Always prioritize safety and consult professionals when in doubt. Happy grilling!