{"product_id":"oem-lennox-heat-exchanger-assembly-57l27","title":"OEM Lennox Heat Exchanger Assembly — 57L27","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e57L27\u003c\/strong\u003e heat exchanger assembly is a precision-built combustion component for Lennox gas furnaces. It draws heat from the burner and transfers it into your home's circulating air while containing flue gases and combustion byproducts away from the air stream. Made to original Lennox specifications, it renews your furnace's rated efficiency and safe heating performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A deteriorating heat exchanger often shows cracks, rust, or metal fatigue. Telltale signs include a burner flame that flickers or lifts when the blower runs, frequent limit-switch tripping and short-cycling, soot or odor around the furnace, and — most seriously — carbon monoxide detector alarms during heating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e As a safety-critical part, the heat exchanger must exactly match Lennox's metallurgy, weld integrity, and mounting dimensions. Non-OEM alternatives can leak combustion gases, fail prematurely, and void your warranty. The factory-original \u003cstrong\u003e57L27\u003c\/strong\u003e provides a correct, reliable, and safe replacement you can trust. In stock and ready to ship same day before 3PM CST.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081067512179,"sku":"LNX-57L27","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-57l27","provider":"National HVAC Parts","version":"1.0","type":"link"}