{"product_id":"oem-lennox-heat-exchanger-assembly-y5340","title":"OEM Lennox Heat Exchanger Assembly — Y5340","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003eY5340\u003c\/strong\u003e heat exchanger assembly is a factory-direct replacement for compatible Lennox gas furnaces. This component transfers combustion heat to the circulating air that warms your home while forming a sealed barrier that keeps flue gases out of the breathable air stream. A sound \u003cstrong\u003eY5340\u003c\/strong\u003e exchanger is critical to both furnace efficiency and household safety.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e cracks, rust, or holes in the exchanger walls, a distorted or yellow burner flame, soot accumulation, banging or rumbling noises at startup, strange odors, and unexplained carbon monoxide alarms. Any breach in the heat exchanger warrants immediate replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Lennox designs its furnaces around specific heat-transfer surface areas, metal thicknesses, and pressure tolerances. The OEM \u003cstrong\u003eY5340\u003c\/strong\u003e matches these specifications exactly, restoring rated AFUE efficiency, ensuring a leak-free seal, and preserving your equipment warranty. Generic replacements risk poor fit, reduced safety margins, and premature failure.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081077244275,"sku":"LNX-Y5340","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-y5340","provider":"National HVAC Parts","version":"1.0","type":"link"}