{"product_id":"oem-lennox-stainless-steel-heat-exchanger-53k70","title":"OEM Lennox Stainless Steel Heat Exchanger — 53K70","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e53K70\u003c\/strong\u003e stainless steel heat exchanger assembly is the heart of your Lennox gas furnace's heating cycle. It captures heat from the burners and transfers it to the circulating air while containing combustion byproducts. The stainless steel construction resists the corrosion, thermal fatigue, and cracking that shorten the life of lesser materials — making it ideal for high-efficiency and condensing Lennox applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Look for visible cracks, rust streaks, or holes; a burner flame that flutters or lifts when the blower engages; strange odors; soot deposits; or repeated high-limit trips. A breached exchanger can release carbon monoxide, so replace it promptly at the first sign of failure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Lennox stainless heat exchangers are formed to exact geometry and welded to strict standards for safe combustion and rated efficiency. The OEM \u003cstrong\u003e53K70\u003c\/strong\u003e ensures a correct fit, proper airflow, and full compatibility with your Lennox control sequence — while keeping your warranty intact. Trust the factory-engineered part for safe, lasting heat.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081068429683,"sku":"LNX-53K70","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-stainless-steel-heat-exchanger-53k70","provider":"National HVAC Parts","version":"1.0","type":"link"}