{"product_id":"oem-goodman-17-1-2-4-cell-heat-exchanger-for-gmnte080-4-4821402s","title":"OEM Goodman 17-1\/2\" 4-Cell Heat Exchanger for GMNTE080-4 — 4821402S","description":"\u003ch2\u003eGoodman 4821402S 17-1\/2\" 4-Cell Heat Exchanger\u003c\/h2\u003e\u003cp\u003eThe Goodman 4821402S is a genuine OEM 4-cell heat exchanger engineered as a direct-fit replacement for the \u003cstrong\u003eGMNTE080-4\u003c\/strong\u003e 80,000 BTU gas furnace. The heat exchanger is the heart of the furnace — combustion gases pass through its four aluminized-steel cells while blower air flows across the outside, transferring heat to your home while keeping toxic flue gases fully separated from the air stream. A cracked or rusted-through heat exchanger is a carbon monoxide hazard and is the most common reason a furnace is red-tagged. This OEM replacement restores safe, efficient, code-compliant heating.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 4821402S\u003c\/li\u003e\n\u003cli\u003eComponent: Clamshell heat exchanger assembly\u003c\/li\u003e\n\u003cli\u003eCells: 4-cell\u003c\/li\u003e\n\u003cli\u003eWidth: 17-1\/2 inches\u003c\/li\u003e\n\u003cli\u003eMaterial: Aluminized steel\u003c\/li\u003e\n\u003cli\u003eCompatible Model: Goodman GMNTE080-4 (80K BTU) furnace\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman (Amana \/ Daikin family)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eHeat exchangers are precision combustion components — cell geometry, flange pattern, and burner alignment must match exactly. This \u003cstrong\u003egenuine Goodman OEM exchanger\u003c\/strong\u003e guarantees correct flame carry-over, drop-in fitment, and warranty compliance. Generic exchangers are effectively nonexistent for this platform, and any mismatch risks CO leakage. Always use OEM.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eAdvanced — 5 out of 5.\u003c\/strong\u003e A full teardown: the furnace is disassembled to remove burners, manifold, gas valve, and blower before the exchanger can be swapped. Requires combustion analysis and CO testing on completion. Many Goodman furnaces carry a lifetime or 20-year heat exchanger warranty — check your registration, as this part may be covered.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eThis is a life-safety combustion component. Installation must be performed by a licensed HVAC professional with a calibrated combustion analyzer.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058133320051,"sku":"GOODMAN-11799","price":469.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-17-1-2-4-cell-heat-exchanger-for-gmnte080-4-4821402s","provider":"National HVAC Parts","version":"1.0","type":"link"}