{"product_id":"oem-lennox-limit-switch-11w50","title":"OEM Lennox Limit Switch — 11W50","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e11W50\u003c\/strong\u003e limit switch is a thermally activated safety control designed to guard your Lennox furnace against overheating. It monitors the temperature of the air passing over the heat exchanger and automatically cuts power to the burners if that temperature rises above the safe operating range, preventing heat exchanger damage and protecting your home.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A worn or defective \u003cstrong\u003e11W50\u003c\/strong\u003e often causes short-cycling, intermittent no-heat calls, premature burner shutdown, or a furnace that locks out on limit faults. Because it is a safety component, a failed switch can either strand you without heat or, if bypassed, allow unsafe operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The Lennox \u003cstrong\u003e11W50\u003c\/strong\u003e is calibrated to a specific trip point and built to the exact form factor your furnace requires. Off-brand replacements can introduce nuisance trips or improper safety response. Installing the genuine OEM part ensures correct calibration, a precise fit, and dependable protection for your Lennox equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081115844979,"sku":"LNX-11W50","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-limit-switch-snap-disc-LNX-11W50.jpg?v=1783762457","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-limit-switch-11w50","provider":"National HVAC Parts","version":"1.0","type":"link"}