{"product_id":"oem-lennox-transformer-60j43","title":"OEM Lennox Transformer — 60J43","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e60J43\u003c\/strong\u003e transformer steps line voltage down to the 24-volt low-voltage power that runs your furnace's control board, thermostat, gas valve, and relays. Without steady 24V output, none of your Lennox system's control circuits can operate, making this a foundational component of the unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e When the \u003cstrong\u003e60J43\u003c\/strong\u003e fails you'll typically get a completely dead thermostat, a furnace that won't respond to any call for heat, or a repeatedly blown low-voltage fuse. A transformer that has overheated may show scorched windings, a burnt smell, or a swollen case, often caused by a shorted secondary circuit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Lennox specifies this transformer's exact VA rating and voltage output to match the load of your system's controls. An undersized or mismatched aftermarket transformer can overheat, deliver unstable voltage, or fail to power all components under load. The authentic \u003cstrong\u003e60J43\u003c\/strong\u003e guarantees correct capacity, safe operation, and full compatibility with your Lennox equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081099788659,"sku":"LNX-60J43","price":29.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-LNX-60J43.jpg?v=1783764014","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-transformer-60j43","provider":"National HVAC Parts","version":"1.0","type":"link"}