{"product_id":"oem-lennox-heat-exchanger-assembly-53k77","title":"OEM Lennox Heat Exchanger Assembly — 53K77","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e53K77\u003c\/strong\u003e heat exchanger assembly is responsible for transferring heat from the combustion process into your home's air supply while keeping harmful flue gases sealed away from the airstream. Produced to Lennox factory tolerances, it returns your furnace to its designed level of efficiency and safe performance.\u003c\/p\u003e\u003cp\u003eIndicators of a deteriorating heat exchanger include cracks, rust, or pinholes in the metal, accumulated soot, a wavering or discolored burner flame, unusual odors when heating, and carbon monoxide detector activation. Because these conditions can endanger your household, the \u003cstrong\u003e53K77\u003c\/strong\u003e is a safety-critical part that warrants immediate replacement.\u003c\/p\u003e\u003cp\u003eWhen it comes to a component this important, OEM is the right call. The \u003cstrong\u003e53K77\u003c\/strong\u003e is built with the precise alloy, wall thickness, and geometry required to seal correctly within your Lennox furnace and maintain proper heat exchange — specifications aftermarket parts often fall short of. The genuine part preserves your warranty, sustains rated efficiency, and delivers the safety and peace of mind your family deserves.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081076162931,"sku":"LNX-53K77","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-53k77","provider":"National HVAC Parts","version":"1.0","type":"link"}