{"product_id":"oem-goodman-heat-exchanger-for-gmp100-3-furnace-2921306s","title":"OEM Goodman Heat Exchanger for GMP100-3 Furnace — 2921306S","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 2921306S Heat Exchanger\u003c\/strong\u003e is a genuine OEM replacement for the \u003cstrong\u003eGoodman GMP100-3\u003c\/strong\u003e gas furnace. The heat exchanger is the heart of the furnace — it transfers heat from combustion gases to the circulating air stream while keeping flue products physically separated from your home's air. A cracked or corroded exchanger is a safety-critical failure that can allow carbon monoxide into the airflow, so it must be replaced with a correctly matched OEM part.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 2921306S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e Goodman GMP100-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Heat Exchanger\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment Type:\u003c\/strong\u003e 100,000 BTU-class Gas Furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Aluminized steel clamshell exchanger\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman (OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eHeat exchangers are one part where OEM is not optional. This factory unit matches the GMP100-3 burner alignment, cell geometry, and mounting exactly, ensuring proper flame impingement and thermal expansion behavior. Non-OEM exchangers risk misalignment, hot spots, and premature cracking. Genuine Goodman construction also protects any remaining furnace warranty.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eExpert \/ Professional Only\u003c\/strong\u003e — replacing a heat exchanger requires nearly full furnace disassembly, burner and manifold removal, and post-install combustion analysis. This is a safety-critical repair and should be completed by a licensed HVAC technician, followed by a CO test and draft verification.\u003c\/p\u003e\u003cp\u003eShut off gas and electrical power before any service. Confirm your furnace model and serial before ordering; contact info@nationalhvacparts.com for fitment help.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057148084595,"sku":"GOODMAN-2921306S","price":574.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-heat-exchanger-for-gmp100-3-furnace-2921306s","provider":"National HVAC Parts","version":"1.0","type":"link"}