{"product_id":"oem-goodman-170-f-primary-limit-switch-for-ams80704bnaa-b1370188","title":"OEM Goodman 170°F Primary Limit Switch for AMS80704BNAA — B1370188","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370188\u003c\/strong\u003e is a genuine OEM primary (high) limit switch built for the \u003cstrong\u003eAMS80704BNAA\u003c\/strong\u003e gas furnace and matching Goodman\/Amana 80% AFUE units. This is the furnace's main overheat safety: it senses supply-plenum temperature and opens at roughly \u003cstrong\u003e170°F\u003c\/strong\u003e, cutting the gas valve and burners if the heat exchanger runs too hot from low airflow, a dirty filter, or blower failure. A tripped or failed primary limit is a common cause of no-heat and short-cycling complaints.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e B1370188\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary high-limit switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen temperature:\u003c\/strong\u003e 170°F, automatic reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Normally closed (N.C.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e AMS80704BNAA and related Goodman\/Amana furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 1\/4 in. quick-connect spade\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM vs. Generic:\u003c\/strong\u003e The B1370188 matches the factory trip point, disc diameter, and insertion depth so the sensor sits correctly in the airstream. Universal replacements frequently trip early or late, leading to nuisance lockouts or missed protection. OEM ensures the furnace behaves exactly as the manufacturer intended and keeps your warranty and safety certifications intact.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstall difficulty:\u003c\/strong\u003e Easy (1\/5). Shut off power and gas, pull the two spade connectors, remove the mounting screws, and swap in the new limit. Reconnect, restore power, and confirm a full heat cycle. About a 10–15 minute job for a technician.\u003c\/p\u003e\u003cp\u003eExact-fit OEM quality with fast shipping from National HVAC Parts.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057691246963,"sku":"GOODMAN-6926","price":12.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-170-f-primary-limit-switch-for-ams80704bnaa-b1370188","provider":"National HVAC Parts","version":"1.0","type":"link"}