{"product_id":"oem-lennox-stainless-steel-heat-exchanger-33m13","title":"OEM Lennox Stainless Steel Heat Exchanger — 33M13","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e33M13\u003c\/strong\u003e is a stainless steel heat exchanger assembly for Lennox gas furnaces. It captures heat from the burners and transfers it to the circulating air while forming a sealed barrier that keeps combustion byproducts out of your living space. The stainless steel design withstands the expansion, contraction, and moisture exposure of everyday furnace operation, supporting both efficient heating and long-term safety.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Signs of trouble include visible cracks, rust or corrosion at the seams, a flame that flutters or shifts when the blower runs, soot buildup, unusual smells, or a furnace that repeatedly cycles off on the high-limit switch. A breached exchanger can leak flue gases and should be replaced promptly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The \u003cstrong\u003e33M13\u003c\/strong\u003e is produced to Lennox's exact specifications for alloy, pass configuration, and mounting, ensuring a precise fit and rated efficiency in your system. Selecting a genuine OEM assembly safeguards your warranty, maintains factory performance, and provides corrosion resistance that generic alternatives can't reliably deliver. Protect your furnace and your home with authentic Lennox components.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081076785523,"sku":"LNX-33M13","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-stainless-steel-heat-exchanger-33m13","provider":"National HVAC Parts","version":"1.0","type":"link"}