{"product_id":"oem-goodman-primary-limit-temperature-control-for-gks90904cxaa-20162904","title":"OEM Goodman Primary Limit Temperature Control for GKS90904CXAA — 20162904","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162904 Primary Limit Temperature Control\u003c\/strong\u003e is a genuine OEM high-limit safety switch for \u003cstrong\u003eGKS90904CXAA\u003c\/strong\u003e gas furnaces. Mounted on the heat exchanger or furnace vestibule, the primary limit continuously monitors supply-air temperature and shuts off the burners if the furnace overheats — the most common cause being restricted airflow from a clogged filter or failing blower. This auto-reset control then re-enables heating once temperatures return to a safe range, protecting the heat exchanger from cracking and preventing fire hazards.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Primary high-limit temperature control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Overtemperature burner shutoff\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset:\u003c\/strong\u003e Automatic (temperature-sensing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e GKS90904CXAA and compatible Goodman furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman (OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM vs. Generic:\u003c\/strong\u003e The primary limit is calibrated to a furnace-specific trip temperature and its bracket\/insertion depth is engineered for this exact cabinet. A generic replacement with the wrong set point can cause chronic short-cycling or, more dangerously, fail to trip during a true overheat event. For this safety-critical, higher-value component, OEM is the right choice.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstall Difficulty:\u003c\/strong\u003e Moderate — usually a 20–40 minute replacement requiring removal of the burner or blower panel to access the control. Disconnect all power before servicing and confirm correct orientation and probe depth. If you are unsure, use a licensed HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058094621043,"sku":"GOODMAN-10749","price":35.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-temperature-control-for-gks90904cxaa-20162904","provider":"National HVAC Parts","version":"1.0","type":"link"}