What are some common problems with Goodman furnaces? Common problems include ignition failure due to faulty hot surface ignitor that wears out after 3 to 5 years, causing furnace not to light. Flame sensor dirty or corroded causing furnace to shut off shortly after lighting. Pressure switch failure due to blocked vent or condensate drain clog, common in high efficiency condensing furnaces. Blower motor capacitor failure causing blower not to start. Control board failure due to power surges. Inducer motor failure making loud noise. Like other brands, Goodman furnaces can have heat exchanger cracks if overheated due to restricted airflow from dirty filter or undersized ducts. Some older Goodman furnaces had issues with venting and condensate leaks. However many problems stem from poor installation, such as incorrect gas pressure, improper vent slope, and inadequate combustion air. Regular maintenance like cleaning flame sensor, replacing filter, checking condensate drain, and annual inspection reduces failures. Goodman parts are standard and affordable, making repairs cheaper than premium brands with proprietary parts, and warranty covers parts for 10 years when registered.
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