{"product_id":"oem-lennox-stainless-steel-heat-exchanger-19a70","title":"OEM Lennox Stainless Steel Heat Exchanger — 19A70","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e19A70\u003c\/strong\u003e is a stainless steel heat exchanger assembly designed to move combustion heat into your home's air supply while safely containing and venting flue gases. The stainless construction of the \u003cstrong\u003e19A70\u003c\/strong\u003e resists corrosion, thermal fatigue, and condensate-related degradation, giving it a longer service life in demanding Lennox furnace applications.\u003c\/p\u003e\u003cp\u003eWatch for these failure symptoms: hairline or visible cracks in the exchanger, rust or white oxidation scaling, a burner flame that distorts or rolls out when the blower starts, sooting, unusual smells, or repeated shutdowns on the high-limit control. Because a breached exchanger can introduce carbon monoxide into the airstream, it should be replaced without delay.\u003c\/p\u003e\u003cp\u003eOEM is critical for this component. The Lennox \u003cstrong\u003e19A70\u003c\/strong\u003e matches the exact stainless alloy, tube geometry, and mounting profile of your original assembly, ensuring proper flame containment, rated efficiency, and a leak-tight seal to the burner box. Non-OEM substitutes may use lesser materials that fail prematurely and can void your Lennox warranty. Install this authentic stainless steel OEM assembly for durable, safe, factory-rated heating.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081073279347,"sku":"LNX-19A70","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-stainless-steel-heat-exchanger-19a70","provider":"National HVAC Parts","version":"1.0","type":"link"}