{"product_id":"oem-goodman-150-f-primary-limit-switch-for-ameh800805cxab-20162903","title":"OEM Goodman 150°F Primary Limit Switch for AMEH800805CXAB — 20162903","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162903 Primary Limit Switch (150°F)\u003c\/strong\u003e is a genuine OEM high-limit safety control for the Amana\/Goodman \u003cstrong\u003eAMEH800805CXAB\u003c\/strong\u003e gas furnace. This normally-closed thermal switch continuously monitors heat-exchanger and plenum temperature; if the furnace overheats — from a dirty filter, blocked ductwork, or a failed blower — it opens the circuit and shuts down the gas valve to prevent equipment damage and fire.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 20162903\u003c\/li\u003e\n\u003cli\u003eTrip Temperature: 150°F (primary high limit)\u003c\/li\u003e\n\u003cli\u003eType: Normally-closed, auto-reset thermal limit\u003c\/li\u003e\n\u003cli\u003eFunction: Overheat safety shutoff\u003c\/li\u003e\n\u003cli\u003eCompatibility: AMEH800805CXAB and related Goodman\/Amana furnaces\u003c\/li\u003e\n\u003cli\u003eFit: Direct OEM replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe trip setpoint and mounting geometry are matched to this furnace's heat exchanger. The \u003cstrong\u003egenuine OEM 20162903\u003c\/strong\u003e guarantees the correct 150°F calibration and terminal orientation, while generic limits may trip early (nuisance shutdowns) or too late (unsafe). For a safety-rated control, OEM is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy to Moderate — DIY-friendly with basic tools.\u003c\/strong\u003e Cut power at the breaker, remove the two spade terminals, unscrew the mounting plate, and install the replacement in the same position. Takes 10–15 minutes. Always confirm proper airflow and a clean filter, since a repeat trip usually points to an airflow problem — not a bad switch.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057584882035,"sku":"GOODMAN-4456","price":18.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-ameh800805cxab-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}