{"product_id":"oem-lennox-switch-limit-r01851a031-98m73","title":"OEM Lennox Switch-Limit R01851A031 — 98M73","description":"\u003cp\u003eThe \u003cstrong\u003eLennox 98M73\u003c\/strong\u003e (OEM part number R01851A031) is an authentic Lennox replacement limit switch that monitors internal furnace temperatures and interrupts burner operation when temperatures exceed safe thresholds, preventing heat exchanger damage and potential safety hazards. Signs of a defective limit switch include the furnace shutting off prematurely, failing to produce heat, or continuously running the blower without igniting the burner. Sourced directly from Lennox, this OEM part guarantees correct calibration and a direct drop-in fit for compatible Lennox heating systems.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081052995955,"sku":"LNX-98M73","price":19.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-switch-limit-r01851a031-98m73","provider":"National HVAC Parts","version":"1.0","type":"link"}