{"product_id":"oem-lennox-aluminum-heat-exchanger-19a69","title":"OEM Lennox Aluminum Heat Exchanger — 19A69","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e19A69\u003c\/strong\u003e aluminized heat exchanger assembly transfers combustion heat into your home's airflow while containing flue gases within your Lennox gas furnace. Its aluminized-steel construction resists oxidation and thermal fatigue, delivering the long service life and rated efficiency your Lennox system was designed to provide.\u003c\/p\u003e\u003cp\u003eWatch for warning signs that this component has failed: hairline cracks or corrosion on the exchanger surface, soot or scorch marks, a burner flame that flickers or turns yellow, banging and popping during startup, or elevated carbon monoxide readings. Because a cracked heat exchanger can leak combustion byproducts into living spaces, prompt replacement is essential for safety.\u003c\/p\u003e\u003cp\u003eThe OEM \u003cstrong\u003e19A69\u003c\/strong\u003e is manufactured to Lennox's precise dimensional and metallurgical standards, ensuring correct fit, proper airflow, and safe combustion. Generic replacements risk poor sealing, reduced efficiency, and voided warranty coverage. Genuine Lennox parts protect both your equipment investment and your family's safety.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081072263539,"sku":"LNX-19A69","price":399.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-aluminum-heat-exchanger-19a69","provider":"National HVAC Parts","version":"1.0","type":"link"}