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The Goodman B1401018S Hot Surface Ignitor is a genuine OEM ignition component engineered for GMT090-5A gas furnaces. When your furnace clicks but the burners fail to light, a cracked or worn ignitor is the most common culprit. This factory-spec part restores reliable, consistent ignition on every heating cycle.
Our genuine OEM B1401018S is built to Goodman's exact resistance and heat-up specifications, ensuring proper flame-sensing timing and long service life. Generic universal ignitors may fit physically but often mismatch the control board's timing sequence, leading to lockouts and premature failure. For a furnace you depend on through winter, OEM is the safe choice.
Rating: Easy (1/5). Replacement typically takes 15–20 minutes with a single screwdriver. Always disconnect power at the breaker before servicing. Handle the ignitor by its ceramic base only — skin oils can create hot spots that shorten its life. Professional installation is recommended if you are not comfortable working around gas appliances.