{"product_id":"oem-lennox-heat-exchanger-assembly-19a79","title":"OEM Lennox Heat Exchanger Assembly — 19A79","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e19A79\u003c\/strong\u003e heat exchanger assembly is the heart of your furnace's heating process, transferring heat from the burner combustion chamber into the air stream that warms your home while containing flue gases and preventing them from mixing with conditioned air. It is built to the precise specifications of your Lennox furnace for correct fit, airflow, and combustion.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Watch for cracks, corrosion, or rust on the exchanger surface, a distorted or flickering burner flame, soot accumulation, strange smells during operation, or a triggered carbon monoxide alarm. A cracked heat exchanger is a serious safety hazard and warrants immediate replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Heat exchangers are safety-critical, so an exact-fit OEM Lennox \u003cstrong\u003e19A79\u003c\/strong\u003e is essential. Generic replacements can differ in metal thickness, weld quality, and dimensions, leading to poor combustion, early failure, and warranty issues. This factory-engineered assembly returns your Lennox system to safe, efficient, rated performance.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081075900787,"sku":"LNX-19A79","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-19a79","provider":"National HVAC Parts","version":"1.0","type":"link"}