Last updated: July 2026 · Based on Goodman service documentation and diagnostic codes
Goodman furnaces are known for being affordable and widely serviceable — parts are common and most repairs are straightforward for any HVAC technician. Whether your Goodman is not igniting, short cycling, or flashing an error code, this guide covers the most common Goodman furnace problems, what they typically cost to fix, and which you can troubleshoot yourself before calling for service.
Read the Diagnostic Code First
Like most modern furnaces, Goodman units flash a diagnostic LED code through the small window on the furnace door. The legend is printed inside the door panel. Counting the flashes and matching them to the legend tells you whether the fault is ignition, the pressure switch, the limit switch, or flame sensing — often saving a diagnostic fee. A steady or slow flash is usually normal; a repeating numbered pattern indicates a specific fault.
Common Goodman Furnace Problems
| Problem | Likely cause | Typical repair cost |
|---|---|---|
| Lights then shuts off | Dirty flame sensor | $0 DIY – $200 |
| No ignition | Hot surface igniter (common wear part) | $150–$300 |
| Short cycling | Filter, limit switch, flame sensor | $0–$350 |
| Pressure switch code | Blocked vent or condensate | $150–$350 |
| No power / blank | Blown low-voltage fuse, control board | $5–$700 |
| Blower won’t run | Capacitor or blower motor | $150–$600 |
The Goodman Igniter: A Common Wear Part
Goodman furnaces (like many brands) use a hot surface igniter that glows to light the burners. These are a known wear item — they crack and fail after several years and are one of the most common Goodman repairs. If your Goodman clicks and tries to light but never fires, and the igniter does not glow, that is likely the culprit. The part runs $30–$80; professional replacement $150–$300.
DIY Checks Before Calling
- Replace the air filter and clear vents — fixes many short-cycling and no-heat cases.
- Clean the flame sensor if it lights then dies in seconds.
- Check the furnace door switch is engaged and the breaker/switch is on — see furnace not turning on.
- Read the LED code and clear a soft lockout by cycling power.
Goodman Reliability and Warranty
Goodman furnaces are budget-friendly and generally reliable, with a reputation for good warranty coverage — many models carry a 10-year parts warranty (and lifetime heat exchanger on some), provided the unit was registered. If your Goodman needs a major part like the control board or heat exchanger, check the warranty status with your model and serial number before paying out of pocket.
When to Call a Pro
Call an HVAC technician for igniter or gas valve replacement, any code pointing to the control board, pressure switch faults you cannot trace to a blocked vent, or blower motor problems. For general repair pricing across brands, see furnace repair cost.
FAQ
Are Goodman furnaces reliable?
Goodman is a budget-friendly brand with a solid reliability reputation and strong warranty coverage. Parts are common and inexpensive, and most HVAC technicians service them, which keeps repair costs reasonable compared to premium brands.
Why does my Goodman furnace light then shut off?
The classic cause is a dirty flame sensor that cannot detect the flame and shuts off the gas within seconds. Cleaning the sensor is often a free fix. If the igniter never glows, a failed hot surface igniter is the likely culprit instead.
How do I read my Goodman furnace error code?
Look through the window on the furnace door for a flashing LED, count the flash pattern, and match it to the legend printed inside the door panel. The code identifies whether the fault is ignition, pressure switch, limit switch, or flame sensing.
Sources: U.S. Department of Energy — Home Heating Systems · Goodman service and diagnostic documentation.