{"product_id":"oem-lennox-heat-exchanger-assembly-28j70","title":"OEM Lennox Heat Exchanger Assembly — 28J70","description":"\u003cp\u003eGenuine OEM Lennox \u003cstrong\u003e28J70\u003c\/strong\u003e heat exchanger assembly. This part transfers combustion heat to the air moving through your Lennox furnace while maintaining a sealed barrier that keeps flue gases separate from your home's air supply. Produced to exact factory tolerances and metallurgy, the \u003cstrong\u003e28J70\u003c\/strong\u003e is a direct replacement that restores your furnace's original heating output and safety performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Warning signs of a failing heat exchanger include visible cracks or corrosion, rust flakes near the burner assembly, a flame that flickers or shifts color when the blower runs, soot and scorch marks, unusual odors, and repeated trips of the rollout or high-limit safety switches. Because a cracked exchanger can allow carbon monoxide into the airstream, prompt replacement is critical.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Lennox furnaces are engineered around the precise shape, alloy, and airflow profile of their factory heat exchangers. A genuine \u003cstrong\u003e28J70\u003c\/strong\u003e assembly ensures a correct fit, a proper combustion seal, and ongoing compliance with the safety and efficiency ratings of your system. OEM parts protect your warranty and deliver the dependable, long-lasting performance you expect from Lennox.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081072689523,"sku":"LNX-28J70","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-28j70","provider":"National HVAC Parts","version":"1.0","type":"link"}