{"product_id":"oem-lennox-limit-switch-74w77","title":"OEM Lennox Limit Switch — 74W77","description":"\u003cp\u003eThe \u003cstrong\u003eLennox 74W77\u003c\/strong\u003e is a genuine OEM limit switch that continuously monitors your Lennox furnace's operating temperature and shuts down the burner when temperatures rise beyond safe operating limits, protecting the heat exchanger and surrounding components. A malfunctioning limit switch can cause symptoms such as short-cycling, the furnace failing to ignite, or the system blowing only cold air. This authentic Lennox replacement part provides a direct factory fit and dependable protection for compatible Lennox heating systems.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081057026419,"sku":"LNX-74W77","price":19.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-limit-switch-74w77","provider":"National HVAC Parts","version":"1.0","type":"link"}