{"product_id":"oem-lennox-heat-exchanger-assembly-33m65","title":"OEM Lennox Heat Exchanger Assembly — 33M65","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e33M65\u003c\/strong\u003e heat exchanger assembly (also listed as LB-94782W) is the heart of your Lennox gas furnace's heating cycle, transferring burner heat into the supply air while safely venting combustion gases away from your home. Manufactured to factory specifications, it delivers the exact thermal performance and safe separation your furnace was designed around.\u003c\/p\u003e\u003cp\u003eSigns that a heat exchanger needs replacement include visible cracks, rust or scaling, a burner flame that flickers or changes shape when the blower runs, soot accumulation, unusual odors, and carbon monoxide detection. Given the safety implications, a damaged exchanger warrants immediate attention from a qualified technician.\u003c\/p\u003e\u003cp\u003eOpting for the OEM Lennox \u003cstrong\u003e33M65\u003c\/strong\u003e is important because its alloy composition, wall thickness, and construction are engineered for your furnace's specific firing rate and airflow. Non-OEM parts may not seal correctly or withstand thermal cycling, leading to early failure and lost efficiency. The factory assembly ensures a precise fit, dependable operation, and continued warranty protection for your Lennox system.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081065578867,"sku":"LNX-33M65","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-33m65","provider":"National HVAC Parts","version":"1.0","type":"link"}