{"product_id":"oem-lennox-heat-exchanger-assembly-16j43","title":"OEM Lennox Heat Exchanger Assembly — 16J43","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e16J43\u003c\/strong\u003e heat exchanger assembly is the core heating element of your Lennox gas furnace. It transfers heat generated by the burners into the air flowing across its surfaces, providing warm, comfortable air throughout your home while containing and safely exhausting combustion byproducts through the flue. Precision-engineered passages ensure efficient, consistent heat transfer season after season.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms\u003c\/strong\u003e include visible cracking, rust, or holes, a burner flame that flutters or shifts when the blower engages, soot buildup, unusual odors, water or condensation near the furnace, or a triggered carbon monoxide detector. A cracked or corroded heat exchanger is a safety hazard and should be replaced without delay.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The \u003cstrong\u003e16J43\u003c\/strong\u003e is built to Lennox's exact dimensional and metallurgical specifications, guaranteeing a proper airtight seal, optimal heat transfer, and full rated efficiency. Generic replacements may seal poorly, lower efficiency, and fail early. Installing the authentic OEM part ensures an exact fit, restores factory performance, and maintains your furnace's safety certification. Always use a qualified HVAC professional for installation.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081076326771,"sku":"LNX-16J43","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-16j43","provider":"National HVAC Parts","version":"1.0","type":"link"}