{"product_id":"oem-lennox-furnace-limit-switch-11g87","title":"OEM Lennox Furnace Limit Switch — 11G87","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e11G87\u003c\/strong\u003e limit switch is a temperature-sensitive safety control that monitors heat inside the furnace and shuts off the burners if the plenum temperature climbs beyond a safe threshold. It also helps coordinate blower operation, energizing the fan once the heat exchanger reaches temperature and de-energizing it after the burners cool. This switch is calibrated to the exact trip and reset points specified for the Lennox furnaces it serves.\u003c\/p\u003e\u003cp\u003eWhen a limit switch fails you may experience a furnace that overheats and shuts down, short-cycling where the burner repeatedly lights and drops out, a blower that runs constantly or won't start, or a unit that stops heating entirely on a lockout. A switch stuck open or drifting out of calibration will interrupt normal operation or, worse, fail to protect against a genuine overheat condition.\u003c\/p\u003e\u003cp\u003eInstalling an OEM Lennox \u003cstrong\u003e11G87\u003c\/strong\u003e matters because the temperature setpoints are engineered to your equipment's heat exchanger and airflow design. A mismatched aftermarket switch can nuisance-trip, fail to trip when needed, or compromise the safety circuit. The factory part guarantees correct calibration, fit, and full compatibility with your Lennox furnace.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081115976051,"sku":"LNX-11G87","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-11G87.jpg?v=1783761131","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-furnace-limit-switch-11g87","provider":"National HVAC Parts","version":"1.0","type":"link"}