{"product_id":"oem-lennox-shield-limit-switch-48m67","title":"OEM Lennox Shield Limit Switch — 48M67","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e48M67\u003c\/strong\u003e shield limit switch is a critical safety control in your Lennox furnace. Mounted near the heat exchanger, it continuously monitors temperature and cuts power to the burners if the unit overheats — protecting the heat exchanger, wiring, and surrounding components from heat damage. This factory part is calibrated to the exact trip point your Lennox system was engineered around.\u003c\/p\u003e\u003cp\u003eWhen a limit switch fails, you'll often see the furnace short-cycling, the blower running non-stop, no heat at all, or the unit locking out on a safety fault. A limit that trips too early or refuses to reset points directly to a worn or out-of-spec switch.\u003c\/p\u003e\u003cp\u003eChoosing the OEM \u003cstrong\u003e48M67\u003c\/strong\u003e matters because aftermarket limits frequently use different trip temperatures and mounting geometry, which can cause nuisance shutdowns or, worse, fail to protect the unit. This direct factory replacement guarantees correct calibration, fit, and safe operation for your Lennox equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081104572787,"sku":"LNX-48M67","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-48M67.jpg?v=1783763521","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-shield-limit-switch-48m67","provider":"National HVAC Parts","version":"1.0","type":"link"}