Why Is My Goodman Furnace Not Kicking On?

Why is your furnace not working? Lozier Has the Answers
Why is your furnace not working? Lozier Has the Answers from www.lozierheatingcooling.com


If you’re experiencing issues with your Goodman furnace not kicking on, it can be frustrating and inconvenient, especially during the colder months. However, understanding the possible reasons behind this problem can help you troubleshoot and resolve the issue efficiently. In this article, we will explore some common causes for a Goodman furnace not kicking on and provide tips on how to fix them.

1. Thermostat Settings

One of the first things to check when your Goodman furnace is not turning on is the thermostat settings. Ensure that the thermostat is set to the desired temperature and mode, such as “Heat” or “Auto.” Additionally, check if the batteries in your thermostat need to be replaced, as this can also cause issues with the furnace not kicking on.

2. Power Supply

Another common reason for a Goodman furnace not kicking on is a disrupted power supply. Check if the furnace is receiving power by looking for any blown fuses or tripped circuit breakers. If you find any, replace the blown fuses or reset the circuit breaker to restore power to the furnace.

3. Pilot Light

If you have an older Goodman furnace model, it may have a pilot light that needs to be lit manually. Check if the pilot light is ignited by following the manufacturer’s instructions. If the pilot light is not lit, it may be necessary to relight it to ensure proper furnace operation.

4. Gas Supply

A lack of gas supply can also prevent your Goodman furnace from kicking on. Check if the gas valve is open and verify that the gas supply to the furnace is not interrupted. If you suspect a gas leak or cannot determine the cause of the gas supply issue, contact a professional HVAC technician to assess and resolve the problem.

5. Air Filter

A clogged or dirty air filter can restrict airflow and cause the furnace to malfunction. Inspect the air filter and replace it if it appears dirty or clogged. Regularly replacing the air filter every 1-3 months can help prevent issues with your Goodman furnace and improve its efficiency.

6. Blower Motor

The blower motor is responsible for circulating air throughout the furnace system. If the blower motor is malfunctioning, it can prevent the furnace from kicking on. Check if the blower motor is running smoothly and listen for any unusual noises. If you suspect a problem with the blower motor, it is recommended to contact a professional technician for inspection and repair.

7. Ignition System

The ignition system in your Goodman furnace is crucial for initiating the heating process. If the ignition system is faulty or dirty, it can prevent the furnace from starting. Inspect the ignition system for any dirt or debris and clean it if necessary. If the problem persists, seek professional help to diagnose and resolve the issue.

8. Limit Switch

A faulty limit switch can also cause your Goodman furnace not to kick on. The limit switch is designed to detect overheating and shut down the furnace for safety reasons. If the limit switch is defective or triggered, it may prevent the furnace from starting. Consult the furnace’s manual or contact a professional technician to inspect and replace the limit switch if needed.

9. Control Board

The control board acts as the brain of your Goodman furnace. If the control board is malfunctioning, it can disrupt the furnace’s operation. Look for any visible signs of damage or loose connections on the control board. If necessary, consult a professional HVAC technician to diagnose and repair the control board.

10. Professional HVAC Help

If you have tried the above troubleshooting steps and your Goodman furnace still does not kick on, it is advisable to seek professional help. An experienced HVAC technician can assess the situation accurately and provide the necessary repairs or replacements to get your furnace back up and running efficiently.


When your Goodman furnace is not kicking on, it is essential to identify the underlying cause and take appropriate action to resolve the issue. By checking thermostat settings, power supply, pilot light, gas supply, air filter, blower motor, ignition system, limit switch, and control board, you can troubleshoot many common problems. If these steps do not solve the issue, contacting a professional HVAC technician is recommended for further assistance. Regular maintenance and timely repairs can ensure the efficient functioning of your Goodman furnace for years to come.