The Goodman furnace lineup spans older models that use a standing pilot light and newer units that rely on electronic ignition systems. Finding the correct pilot light location depends on the model and the type of ignition your furnace uses. This guide explains where to locate the pilot light on various Goodman furnaces, how to relight it when applicable, and what to do if the unit won’t light. It emphasizes safety, proper maintenance, and knowing when to call a professional.

Understanding the differences between standing pilots and electronic ignition is essential. For many modern Goodman furnaces, there is no standing pilot light to light manually. In those cases, ignition happens automatically when a thermostat calls for heat and the gas valve and igniter operate correctly. This article covers both scenarios to help homeowners identify the correct approach for their specific unit.

Understanding Goodman Furnace Pilot Light Types

Goodman furnaces have evolved from traditional standing-pilot systems to advanced electronic ignition designs. Older models, typically manufactured before the mid-2000s, often use a standing pilot light with a thermocouple and a manual or automatic control valve. In these units, the pilot light is a small flame that remains lit to ignite the main burner when heat is demanded. The pilot assembly and gas valve are accessible behind the lower service panel in many installations.

Newer Goodman furnaces usually employ an electronic ignition system, which may be a hot-surface igniter or an intermittent pilot. In these models there is no continuously burning pilot flame. The ignition sequence is controlled by the furnace’s control board, and the flame is established directly through the igniter and gas valve when needed. If you don’t see a standing flame, you likely have an electronic ignition system. Identifying the ignition type is the first step in locating the ignition components and diagnosing lighting issues.

Knowing the ignition type helps determine the correct safety steps. Attempting to light or relight a standing pilot where none exists can be dangerous and may damage the furnace. If there is any doubt about the ignition type, consult the user manual, the data label on the furnace, or a licensed HVAC technician.

Locating The Pilot Light On Older Goodman Furnaces (Standing Pilot)

For older Goodman furnaces with a standing pilot, the pilot assembly is typically located behind the lower front access panel. The exact position can vary by model, but the general location is near the gas valve and the thermocouple. Before you begin, ensure the thermostat is set to off and the furnace power is disconnected if possible, and never work near a live gas line without proper precautions.

Prepare the area: Turn off the furnace and the gas supply valve if accessible. Allow the furnace to cool for several minutes before opening any panels.
Remove the front panel: Use a screwdriver if needed to remove the lower front service panel to expose the burner area, gas valve, thermocouple, and the pilot tube.
Identify components: Look for a small copper tube leading to a tiny flame near the burner. The control knob on the gas valve will have a setting labeled OFF, ON, and PILOT. The thermocouple is typically a copper tube with a sensor at the end positioned near the pilot flame.
Check for obstruction or damage: Ensure there are no obstructions around the burner assembly, and visually inspect for corrosion or loose connections.
Preparation for relighting: If your model requires relighting, you will need a long-nose lighter or a built-in ignition tool (if provided). Do not use a match or short lighter that could bring your hand near the gas valve.

Relighting the standing pilot is a precise process, and the exact steps vary by model. The following relighting procedure is typical for older Goodman furnaces with a standing pilot. If your unit differs, consult the manufacturer’s manual for model-specific directions.

Turn the gas valve to OFF; wait 5 minutes to clear any residual gas.
Turn the valve to PILOT. Depress and hold the control knob to continue delivering gas to the pilot.
Ignite the pilot flame using a long-reach lighter positioned near the pilot port. Maintain the flame for 30 to 60 seconds to heat the thermocouple.
Release the control knob slowly while the pilot flame remains lit. If the flame remains on, rotate the control knob to ON and replace the front panel.
Test the furnace: Set the thermostat to heat and verify that the main burner ignites as required. If the burner does not light, or the pilot goes out, turn off the furnace and seek professional service.

Crucial safety note: If you smell gas or hear a hissing sound near the furnace, do not attempt to relight. Exit the home and contact the gas utility or emergency services immediately. A persistent gas odor indicates a dangerous gas leak that requires professional intervention.

Locating The Pilot Light On Newer Goodman Furnaces (Electronic Ignition)

Newer Goodman units largely rely on electronic ignition systems rather than a standing pilot. In these furnaces, you will not find a continuous flame to light manually. Instead, the ignition sequence is controlled by the furnace’s control board and igniter. The primary components to understand are the igniter (hot-surface or spark-type), the burner, and the gas valve. To troubleshoot, locate the ignition access area, often behind the same front panel used for older units, and identify the ignition components rather than a pilot flame.

Identify the ignition type: A hot-surface igniter appears as a ceramic element that glows when energized, while a spark igniter creates a spark to ignite the gas. The glow or spark should occur when the thermostat calls for heat.
Observe the ignition sequence: When heat is called, you should hear the gas valve open and the igniter energize within a few seconds to ignite the burner. If the burner fails to ignite, the furnace may lock out and display an error code on the control board or LED indicator.
Check obvious faults: Loose wiring, a dirty ignition sensor, or a failed igniter can prevent ignition. Inspect accessible wiring connections for corrosion, loose plugs, or frayed insulation. Do not attempt to repair electrical components unless you have proper training.
Access to ignition components: The ignition area is usually accessible by removing the front panel. Depending on the model, you may also need to remove a secondary panel to reach the burner and igniter assembly.

Because there is no standing pilot in these models, “locating the pilot light” is often a matter of identifying where the ignition occurs rather than a flame. If ignition fails, common causes include a dirty flame sensor, a faulty ignition element, a clogged burner orifice, or a malfunctioning gas valve. Diagnosing and repairing these issues typically requires a qualified HVAC technician.

Safety Considerations When Working With Goodman Furnaces

Turn off power and gas before opening any panels. Never bypass safety devices or seals.
If you smell gas, evacuate the home and contact the utility company or emergency services immediately. Do not re-enter until it is deemed safe by professionals.
Do not attempt to disassemble gas valves, burners, or ignition components beyond what is necessary for basic inspection. Gas systems contain pressurized fuel and pose fire and explosion risks.
Use the correct tools and follow the model-specific manual. Goodman furnaces vary by model and year; the wrong procedure can cause damage or injury.
When in doubt, call a licensed HVAC technician. Regular maintenance by a pro helps prevent pilot or ignition problems and extends furnace life.

Relighting A Pilot Light And Ignition: Step-By-Step Guide

For older Goodman furnaces with a standing pilot, follow these general steps. For units with electronic ignition, skip to the troubleshooting section since there is no pilot to light manually.

Ensure safety: Turn the gas valve to OFF and the power switch to OFF. Wait at least 5 minutes to dissipate any accumulated gas.
Prepare to light: If your unit requires a long-reach lighter, prepare it. Confirm the panel is removable and that you have clear access to the pilot area.
Light the pilot: Move the knob to PILOT and press or hold as required by your model. Apply a steady flame to the pilot port until the flame remains lit after releasing the button.
Set the burner: Once the pilot stays lit, turn the knob to ON. Replace the access panel and restore power to the furnace.
Test the system: Set a call for heat. If the main burner lights and runs normally, the procedure is complete. If the flame goes out or the furnace fails to start, shut down and contact a technician.

Important: For newer Goodman furnaces with electronic ignition, relighting is not a user-serviceable operation. If the system fails to ignite, refer to the fault codes on the control board or contact a professional for diagnostics and repair.

Troubleshooting Common Pilot Light And Ignition Problems

Pilot won’t light on standing-pilot models: Check gas supply, ensure the valve is in PILOT, and verify that the thermocouple is properly positioned and not damaged. A faulty thermocouple is a common cause of pilot outages.
Pilot lights but goes out: A dirty thermocouple or a misaligned flame can cause a shutdown. Clean or adjust the pilot flame to ensure a steady, blue flame that wraps around the thermocouple tip without overheating it.
Burner won’t ignite after the pilot is lit: Inspect the gas valve, igniter, and burner orifice for obstructions or damage. A restricted gas supply or dirty igniter is a frequent reason for ignition failure.
Electronic ignition fails to trigger: Check the control board, transformer, and wiring harness. Look for loose connections or tripped safety interlocks. An error code on the board can guide the diagnosis.
Thermocouple or flame sensor issues: A faulty thermocouple or dirty flame sensor can prevent ignition and cause the furnace to shut down as a safety precaution. Replacement or cleaning by a professional is often required.

Maintenance Tips To Reduce Pilot Light Issues

Schedule annual professional maintenance: A technician will inspect burners, igniters, flame sensors, gas valves, and venting for efficiency and safety.
Keep the furnace area clean: Remove dust, debris, and any obstructions around the furnace cabinet and vent openings to prevent flame instability or restricted combustion air.
Inspect the gas valve and connections: Leaks or corrosion can impact ignition reliability. Do not attempt DIY gas valve repair; rely on a licensed technician.
Replace worn components proactively: Thermocouples, igniters, and flame sensors wear out over time. Replacements should be performed by trained professionals to maintain safety and performance.
Test the thermostat and controls: Ensure the thermostat communicates correctly with the furnace and that there are no delay or calibration issues that could affect ignition timing.

When To Call A Pro

Some situations require professional intervention rather than DIY troubleshooting. Seek help if any of the following apply:

Gas smell persists after turning off the valve or ventilating the space.
The furnace fails to ignite on a call for heat and displays error codes that you cannot interpret from the manual.
Burner flames are yellow, flickering, or uneven, indicating improper combustion or a dirty burner.
The furnace frequently cycles on and off (short cycling) or won’t stay on consistently.
There are visible signs of damage, corrosion, or a damaged electrical component around the ignition system.

Quick Reference And Safety Checklist

Know your model: Identify whether your Goodman furnace uses a standing pilot or electronic ignition. Model labels are usually on the inside of the access panel or on the outside cabinet.
Always prioritize safety: If you smell gas or suspect a leak, exit and call the gas utility immediately.
Access panels carefully: Remove panels only as instructed in the manual. Replace panels securely after maintenance.
Use proper ignition techniques: For standing-pilot models, use a long lighter or the built-in igniter as directed. For electronic ignition models, rely on diagnostic indicators rather than attempting manual ignition.
Document issues: Note the symptoms, error codes, and any recent changes to the furnace or thermostat to assist professionals in diagnosing the problem quickly.