{"product_id":"oem-lennox-limit-switch-28g80","title":"OEM Lennox Limit Switch — 28G80","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e28G80\u003c\/strong\u003e limit switch is a critical safety control that monitors temperature inside compatible Lennox furnaces and heating equipment. It signals the control board to shut off the burners if the heat exchanger or plenum exceeds a safe temperature, protecting the system and your home from overheating, and it also helps coordinate blower operation during the heating cycle.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A faulty limit switch commonly causes the furnace to short cycle, shut down on a limit fault, or fail to fire at all. You may also see the blower running continuously, inadequate heat output, or repeated safety lockouts. Because this switch protects against dangerous overheating, any erratic behavior should be addressed promptly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The \u003cstrong\u003e28G80\u003c\/strong\u003e is calibrated to a specific trip and reset temperature that matches your Lennox unit's design. Substituting a switch with the wrong temperature rating or terminal configuration can cause nuisance shutdowns or, worse, disable a vital safety function. Installing the authentic OEM Lennox part restores the exact factory protection and reliable operation your heating system depends on.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081109946739,"sku":"LNX-28G80","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-28G80.jpg?v=1783762501","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-limit-switch-28g80","provider":"National HVAC Parts","version":"1.0","type":"link"}