{"product_id":"oem-goodman-primary-limit-switch-220-f-for-gmt115-5a-b1370191","title":"OEM Goodman Primary Limit Switch 220°F for GMT115-5A — B1370191","description":"\u003ch2\u003eGoodman B1370191 Primary High-Limit Switch (220°F)\u003c\/h2\u003e\u003cp\u003eThe Goodman B1370191 is a genuine OEM \u003cstrong\u003e220°F primary high-limit switch\u003c\/strong\u003e for the Goodman\/Amana \u003cstrong\u003eGMT115-5A\u003c\/strong\u003e gas furnace. Mounted on the heat exchanger bulkhead, this control monitors supply-air temperature and shuts off the burners if the furnace overheats due to low airflow — typically a dirty filter, closed registers, a failing blower, or an undersized duct. A worn or drifting limit switch causes nuisance short-cycling and comfort complaints.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip temperature:\u003c\/strong\u003e 220°F (auto-reset)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Normally closed, opens on temperature rise\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bulkhead \/ heat-exchanger flange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GMT115-5A and compatible furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM part number:\u003c\/strong\u003e B1370191\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe OEM B1370191 is set to Goodman's precise 220°F trip point with the correct sensing-element length and mounting-hole pattern for your furnace. As a safety limit, the trip temperature and probe depth must match the factory specification exactly — generic switches with the wrong setpoint can either nuisance-trip or fail to protect the heat exchanger. Choose OEM for this control.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy to Moderate\u003c\/h3\u003e\u003cp\u003eCut power, remove two mounting screws, transfer the wiring, and install the replacement — taking care not to bend the sensing element. Before returning the furnace to service, replace the air filter and verify proper blower airflow so the new limit isn't tripped by the same underlying restriction.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058161566067,"sku":"GOODMAN-12439","price":74.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-switch-220-f-for-gmt115-5a-b1370191","provider":"National HVAC Parts","version":"1.0","type":"link"}