{"product_id":"oem-lennox-aluminum-heat-exchanger-assembly-19a71","title":"OEM Lennox Aluminum Heat Exchanger Assembly — 19A71","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e19A71\u003c\/strong\u003e aluminized heat exchanger assembly transfers combustion heat into your home's airflow while isolating flue gases from the conditioned air stream. The aluminized-steel construction resists corrosion and scaling, extending service life in the demanding thermal-cycling environment of a gas furnace and delivering the efficiency your Lennox system was designed to achieve.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Look for cracks, corrosion, or rust perforations in the exchanger, a burner flame that flutters or lifts when the blower starts, soot or scaling, unusual combustion odors, or repeated tripping of the high-limit switch. Any evidence of a breach warrants immediate replacement due to the risk of carbon monoxide leakage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e As a safety-critical, precision-formed component, the heat exchanger must match the original in alloy, wall thickness, and geometry. The OEM Lennox \u003cstrong\u003e19A71\u003c\/strong\u003e guarantees an exact fit to your furnace's burner box and blower assembly, preserves the flue-gas seal, and keeps your equipment warranty intact. Generic replacements risk poor sealing and reduced efficiency — install the genuine Lennox aluminum assembly for a safe, lasting repair.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081072755059,"sku":"LNX-19A71","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-aluminum-heat-exchanger-assembly-19a71","provider":"National HVAC Parts","version":"1.0","type":"link"}