{"product_id":"oem-lennox-limit-switch-56m13","title":"OEM Lennox Limit Switch — 56M13","description":"\u003cp\u003eThe Lennox \u003cstrong\u003e56M13\u003c\/strong\u003e is a genuine OEM high-limit switch that protects your Lennox furnace from overheating. It continuously monitors the temperature in the heat exchanger and blower compartment, shutting off the gas valve if temperatures climb beyond a safe threshold. This safety device is built to Lennox factory specifications for the correct temperature rating and reliable response.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms\u003c\/strong\u003e include a furnace that short cycles, shuts down mid-cycle, fails to fire, or trips repeatedly on the limit. A switch that has opened permanently will prevent heating altogether, while a switch that fails to open removes a critical layer of overheat protection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Limit switches are set to precise trip and reset temperatures matched to your furnace's heat exchanger design. Installing a generic switch with the wrong rating can cause nuisance trips or, worse, allow dangerous overheating. The genuine Lennox \u003cstrong\u003e56M13\u003c\/strong\u003e ensures the exact temperature setpoint your furnace requires, safeguarding the heat exchanger and keeping your equipment warranty intact.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081102573939,"sku":"LNX-56M13","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-56M13.jpg?v=1783762573","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-limit-switch-56m13","provider":"National HVAC Parts","version":"1.0","type":"link"}