{"product_id":"oem-goodman-150-f-primary-limit-switch-for-gks90905dxaa-20162903","title":"OEM Goodman 150°F Primary Limit Switch for GKS90905DXAA — 20162903","description":"\u003ch2\u003eGoodman 20162903 Primary Limit Switch (150°F)\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003e20162903\u003c\/strong\u003e primary high-limit switch is a factory-original safety control engineered for the \u003cstrong\u003eGKS90905DXAA\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. Mounted on the heat exchanger or blower deck, it monitors supply-air temperature and opens the gas valve\/burner circuit if the furnace overheats — protecting the heat exchanger, wiring, and your home from thermal damage.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCutout temperature: 150°F (open on rise)\u003c\/li\u003e\n\u003cli\u003eType: Automatic-reset primary high limit switch\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GKS90905DXAA and select 90%+ AFUE furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: 20162903\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman \/ Amana\u003c\/li\u003e\n\u003cli\u003eApplication: Gas furnace overheat protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis is the \u003cstrong\u003egenuine Goodman OEM\u003c\/strong\u003e switch — calibrated to the exact 150°F trip point specified for your unit, with a factory bracket and terminal orientation that drops in without modification. Generic universal limits often require re-bending brackets or splicing leads and may trip at the wrong temperature, causing nuisance shutdowns or masking a real airflow problem. For a safety component, exact OEM calibration matters.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e A typical swap takes 10–15 minutes with a nut driver. Shut off power and gas, note the two spade-terminal wire positions, remove the mounting screws, and install the replacement in the same orientation. If the old limit failed, inspect the blower and filter for the airflow restriction that likely caused it.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eAlways disconnect power before servicing. Professional installation recommended if you are unfamiliar with gas furnace controls.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058098291059,"sku":"GOODMAN-10845","price":8.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-gks90905dxaa-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}