How to Light Pilot Light on Propane Wall Heater: A Comprehensive Guide

Lighting the pilot light on a propane wall heater can be a straightforward task, but it’s essential to follow the proper safety precautions and understand the technical aspects of the process. This comprehensive guide will walk you through the step-by-step instructions, provide detailed technical specifications, and offer valuable DIY tips to ensure a safe and successful pilot light ignition.

Preparing for Pilot Light Ignition

Before you begin the process of lighting the pilot light, it’s crucial to ensure that the gas supply is turned off. This is typically done by locating the gas supply valve, which is usually situated near the heater, and turning it clockwise to the closed position.

Next, you’ll need to access the pilot light assembly, which is typically located at the bottom of the propane wall heater. This can be done by opening the access panel or removing any necessary covers.

Lighting the Pilot Light

how to light pilot light on propane wall heater

  1. Set the Gas Control Valve: Locate the gas control valve on the heater and turn it to the “pilot” position. This position is usually indicated by a small pilot light icon on the valve.

  2. Press and Hold the Pilot Button: While holding down the pilot button, turn the gas control valve counterclockwise to allow gas to flow to the pilot light opening.

  3. Ignite the Pilot Light: Using a long lighter or match, carefully ignite the pilot light by aiming the flame at the pilot light opening where the gas is exiting. You should see a small, steady flame once the pilot light is lit.

  4. Hold for 30-60 Seconds: Continue holding the pilot button for 30-60 seconds to allow the thermocouple to heat up. The thermocouple is a safety device that shuts off the gas supply if it doesn’t detect a flame.

  5. Release the Pilot Button: After holding the button for the recommended time, slowly release the pilot button. The pilot light should remain lit.

  6. Adjust the Control Valve: Turn the gas control valve back to the “on” position. This will allow the main burner to ignite when the thermostat calls for heat.

  7. Check the Main Burner: Increase the thermostat setting to ensure the main burner ignites. If the main burner does not ignite, you may need to repeat the process or consult the manufacturer’s instructions.

Technical Specifications

Gas Type: Propane, typically stored in a tank and delivered under pressure.

Pressure: The pressure of propane gas can vary, but it’s usually around 11 inches of water column (iwc) for residential applications.

Thermocouple: A thermocouple is a safety device that shuts off the gas supply if it doesn’t detect a flame. It’s typically made of two dissimilar metals that generate a small voltage when heated.

Pilot Light: A small, continuous flame that ignites the main burner when the thermostat calls for heat. It’s located near the main burner and is fueled by a small amount of gas.

DIY Tips

  1. Clean the Pilot Light Assembly: Before lighting the pilot light, ensure the assembly is clean and free of debris. Use a small brush or compressed air to remove any dust or dirt.

  2. Check for Leaks: After reconnecting the gas line, check for leaks using a soap and water solution. If you see bubbles, there’s a leak that needs to be addressed before lighting the pilot light.

  3. Consult the Manufacturer’s Instructions: Always refer to the manufacturer’s instructions for your specific propane wall heater model. They may provide additional safety precautions or specific lighting instructions.

By following these detailed instructions and technical specifications, you can safely and effectively light the pilot light on your propane wall heater. Remember to prioritize safety and consult the manufacturer’s guidelines for your specific model.


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  2. “Wall Heater won’t light : r/propane – Reddit.” Reddit, 27 Nov. 2023,
  3. “How to light a wall heater pilot light – YouTube.” YouTube, uploaded by Home Repair Tutor, 5 Feb. 2020,