{"product_id":"oem-goodman-150-f-primary-limit-switch-for-gks90905dxac-20162903","title":"OEM Goodman 150°F Primary Limit Switch for GKS90905DXAC — 20162903","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162903 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-limit safety control with a \u003cstrong\u003e150°F\u003c\/strong\u003e trip point, built for the \u003cstrong\u003eGKS90905DXAC\u003c\/strong\u003e furnace. Mounted on the heat-exchanger plenum, it monitors supply-air temperature and shuts off the gas valve if the furnace overheats — typically due to restricted airflow, a dirty filter, or a failed blower — protecting the heat exchanger from cracking.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Primary high-limit switch (auto reset)\u003c\/li\u003e\n\u003cli\u003eTrip temperature: 150°F\u003c\/li\u003e\n\u003cli\u003eContacts: Normally closed, open on high temp\u003c\/li\u003e\n\u003cli\u003eMounting: Plenum \/ heat-exchanger bracket, OEM fitment\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GKS90905DXAC and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part #: 20162903\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe 150°F rating is matched to this furnace's cabinet and airflow design. The OEM 20162903 delivers the exact trip temperature, probe length, and terminal layout Goodman specified. Generic limits with a different rating or probe depth can nuisance-trip or, worse, fail to protect the heat exchanger. OEM is the recommended choice for this safety control.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1 of 3).\u003c\/strong\u003e Disconnect power, remove the two mounting screws, transfer the wire terminals, and seat the new switch so the probe sits in the airstream. If the old limit was tripping, correct the airflow restriction first — replacing the switch alone won't fix an overheating furnace.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058099175795,"sku":"GOODMAN-10869","price":18.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-gks90905dxac-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}