{"product_id":"oem-lennox-limit-switch-87h92","title":"OEM Lennox Limit Switch — 87H92","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e87H92\u003c\/strong\u003e limit switch is a temperature-sensing safety control that protects your Lennox furnace from overheating. Mounted near the heat exchanger or plenum, it monitors supply-air temperature and opens the circuit to shut down the burners if the furnace gets too hot — usually the result of restricted airflow.\u003c\/p\u003e\u003cp\u003eWhen the \u003cstrong\u003e87H92\u003c\/strong\u003e trips or fails, you may experience short-cycling, a furnace that shuts off on high heat, no heat with a limit-fault error, or a blower that runs continuously. While a dirty filter, closed vents, or a failing blower motor often cause a limit to trip, the switch itself can also weaken or fail open over time and require replacement.\u003c\/p\u003e\u003cp\u003eOEM matters because the \u003cstrong\u003e87H92\u003c\/strong\u003e is calibrated to the precise open and close temperatures your specific Lennox model requires. A generic limit with the wrong setpoint can allow dangerous overheating or cause repeated nuisance shutdowns. This factory replacement restores proper overheat protection and reliable furnace operation.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081093005683,"sku":"LNX-87H92","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-87H92.jpg?v=1783762632","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-limit-switch-87h92","provider":"National HVAC Parts","version":"1.0","type":"link"}