{"product_id":"oem-lennox-limit-switch-47l19","title":"OEM Lennox Limit Switch — 47L19","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e47L19\u003c\/strong\u003e limit switch is a high-temperature safety control used throughout Lennox furnaces and air handlers. It senses the air temperature in the heat exchanger and plenum, interrupting power to the burners if the unit exceeds its safe operating limit. This safeguard prevents heat exchanger damage and overheating conditions caused by poor airflow.\u003c\/p\u003e\u003cp\u003eA failing \u003cstrong\u003e47L19\u003c\/strong\u003e commonly causes the furnace to short-cycle, the burners to shut off shortly after ignition, no heat on a call from the thermostat, or a high-limit fault indication. Nuisance trips often point to a switch that opens too early, while a switch stuck open leaves the system unable to complete a heating cycle.\u003c\/p\u003e\u003cp\u003eChoosing the OEM Lennox \u003cstrong\u003e47L19\u003c\/strong\u003e is important because it is calibrated to the precise trip and reset temperatures your Lennox equipment requires, with the correct terminal and mounting configuration. Aftermarket switches with different ratings can cause improper cutoff or inadequate protection. Install the factory-engineered replacement to restore safe, consistent heating operation.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081104966003,"sku":"LNX-47L19","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-47L19.jpg?v=1783762555","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-limit-switch-47l19","provider":"National HVAC Parts","version":"1.0","type":"link"}