{"product_id":"oem-goodman-primary-limit-switch-for-gks90904cxab-20162904","title":"OEM Goodman Primary Limit Switch for GKS90904CXAB — 20162904","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162904 Primary Limit Temperature Control\u003c\/strong\u003e is a genuine OEM high-limit safety switch for the \u003cstrong\u003eGKS90904CXAB\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. Mounted on the heat exchanger, this normally-closed thermal switch opens the circuit and shuts down the burners if the furnace exceeds its safe operating temperature — protecting the heat exchanger from cracking and preventing a fire hazard. A failed limit switch is a common cause of short-cycling, no-heat, or a furnace that runs the blower continuously.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 20162904\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary high-limit temperature control (auto-reset)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Opens burner circuit on over-temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GKS90904CXAB and compatible 90%+ gas furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Heat-exchanger \/ vestibule panel, factory-spec trip point\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM vs. Generic:\u003c\/strong\u003e The limit switch is a safety-critical component with a precisely calibrated trip temperature matched to your furnace's heat exchanger. Generic switches with the wrong set point may nuisance-trip (cutting heat when the furnace is fine) or, worse, fail to open when they should. This genuine Goodman part carries the correct calibration and mounting for reliable, code-compliant protection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstall difficulty:\u003c\/strong\u003e Easy to moderate — a two-wire swap after removing the furnace access panel and killing power. Confirm the replacement seats flat against the heat exchanger and route wiring away from hot surfaces. Verify normal heating cycle after installation.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058095604083,"sku":"GOODMAN-10761","price":35.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-switch-for-gks90904cxab-20162904","provider":"National HVAC Parts","version":"1.0","type":"link"}