{"product_id":"oem-goodman-250-f-primary-limit-switch-for-ads81155cna-b1370194-1","title":"OEM Goodman 250°F Primary Limit Switch for ADS81155CNA — B1370194","description":"\u003ch2\u003eGoodman B1370194 Primary High-Limit Switch (250°F)\u003c\/h2\u003e\u003cp\u003eThe B1370194 is a genuine OEM 250°F primary high-limit switch for the Goodman \u003cstrong\u003eADS81155CNA\u003c\/strong\u003e furnace and compatible Goodman\/Amana models. Mounted on the heat exchanger or burner bulkhead, this is the furnace's main overheat safety: if supply-air temperature climbs too high — from a dirty filter, failed blower, or closed registers — the switch opens, cuts the gas valve, and prevents heat-exchanger damage. A furnace that short-cycles on heat or repeatedly trips out often has a faulty primary limit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 250°F (auto reset)\u003c\/li\u003e\n\u003cli\u003eType: Normally closed primary high-limit\u003c\/li\u003e\n\u003cli\u003eFunction: Primary overheat \/ heat-exchanger protection\u003c\/li\u003e\n\u003cli\u003eFit: Goodman ADS81155CNA and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370194\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis \u003cstrong\u003egenuine Goodman OEM\u003c\/strong\u003e limit is factory-set to the precise 250°F open point and exact bracket profile your model uses. Generic substitutes with mismatched trip points or insertion depths can cause nuisance lockouts or, worse, fail to protect the heat exchanger. For the primary safety control, OEM is the right call.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy to Moderate\u003c\/strong\u003e — 15–25 minutes. Power down, note the orientation and insertion depth, remove the mounting screws, transfer the wiring, and seat the new switch fully against the bulkhead. Address the underlying airflow restriction (filter, blower) so the new limit isn't tripped again.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057499193715,"sku":"GOODMAN-3128","price":56.34,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-250-f-primary-limit-switch-for-ads81155cna-b1370194-1","provider":"National HVAC Parts","version":"1.0","type":"link"}