{"product_id":"oem-lennox-heat-exchanger-assembly-53l34","title":"OEM Lennox Heat Exchanger Assembly — 53L34","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e53L34\u003c\/strong\u003e heat exchanger assembly moves heat from your furnace's combustion chamber into the circulating air while safely venting flue gases away from your living space. Manufactured to Lennox factory tolerances, it restores your furnace's original heating capacity and efficiency with a precise, drop-in fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A worn heat exchanger typically shows cracks, corrosion, or rust spots, causes the burner flame to waver or roll out when the blower starts, and may produce a combustion smell, soot, or trip a carbon monoxide alarm. These warning signs indicate the assembly must be replaced right away to protect your home.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Because the heat exchanger is the barrier between poisonous combustion gases and your indoor air, it is one of the most safety-critical parts in your furnace. Only the genuine Lennox \u003cstrong\u003e53L34\u003c\/strong\u003e ensures the certified steel, weld integrity, and exact dimensions required for safe operation and continued warranty coverage. Don't gamble on aftermarket imitations — install OEM for a safe, lasting repair.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081073672563,"sku":"LNX-53L34","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-heat-exchanger-assembly-53l34","provider":"National HVAC Parts","version":"1.0","type":"link"}