{"product_id":"oem-goodman-primary-limit-switch-for-gch90704cxab-furnace-20162906","title":"OEM Goodman Primary Limit Switch for GCH90704CXAB Furnace — 20162906","description":"\u003ch2\u003eGoodman 20162906 M4 Primary Limit Switch\u003c\/h2\u003e\u003cp\u003eThe Goodman 20162906 is a genuine OEM primary high-limit switch engineered for the GCH90704CXAB gas furnace and compatible Goodman\/Amana models. This safety control monitors heat-exchanger temperature and interrupts the burner circuit if the furnace overheats, protecting the unit and your home from unsafe operating conditions. A worn or open limit switch is a common cause of short-cycling, no-heat, and lockout faults.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 20162906 (M4 series)\u003c\/li\u003e\n\u003cli\u003eFunction: Primary high-limit \/ temperature safety cutout\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GCH90704CXAB and select Goodman\/Amana furnaces\u003c\/li\u003e\n\u003cli\u003eType: Automatic-reset snap-disc limit control\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas Furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis is a factory-original Goodman component with the exact trip and reset temperature rating your furnace was designed around. Generic aftermarket limits may use a different set point, which can cause nuisance trips or fail to protect the heat exchanger. For a safety-critical control, OEM is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate\u003c\/strong\u003e — Requires shutting off power and gas, removing the burner\/blower access panel, disconnecting two spade terminals, and swapping the switch. Basic hand tools and 20–30 minutes. If you are not comfortable working near the heat exchanger, use a licensed HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057143464307,"sku":"GOODMAN-20162906","price":24.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-switch-for-gch90704cxab-furnace-20162906","provider":"National HVAC Parts","version":"1.0","type":"link"}