{"product_id":"goodman-100-000-btu-two-stage-gas-furnace-80-percent-afue-upflow-21-inch-cabinet-copy","title":"Goodman 80,000 BTU 80% AFUE Two-Stage Gas Furnace Upflow\/Horizontal 21\" Cabinet 5-Ton R-32","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eTwo-stage comfort for large homes with 5-ton cooling systems — maximum blower capacity at an 80% AFUE price. The Goodman GR9T800805CN delivers 80,000 BTU of two-stage heating at 80% AFUE in a wide 21\" upflow cabinet specifically sized for larger 5-ton R-32 cooling systems. The key difference from the GR9T800804CN? This unit's blower is engineered to move the higher airflow volume that 5-ton systems demand — making it the correct furnace choice when your cooling system is a 5-ton condenser or heat pump. Run at lower output on mild days for quieter, more efficient operation — then ramp up to full power when the cold really hits.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eWhy You'll Love It:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e80% AFUE efficiency\u003c\/strong\u003e — converts 80 cents of every energy dollar into heat, keeping operating costs predictable without overpaying for efficiency ratings designed for larger or colder applications\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e80,000 BTU input \/ 64,000 BTU output\u003c\/strong\u003e — confident, consistent heating for large homes paired with 5-ton cooling systems without oversizing or wasted capacity\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eTwo-stage gas valve\u003c\/strong\u003e — runs at lower output on mild days for gentler, quieter cycling and more even room temperatures, then ramps to full power when temperatures really drop\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e9-speed ECM blower motor\u003c\/strong\u003e — precisely sized for 5-ton system airflow requirements, delivering quiet, precise air distribution and outperforming older PSC motor units throughout your home\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eUpflow \/ horizontal installation\u003c\/strong\u003e — flexible placement in basements, closets, or utility rooms to suit your home's layout\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eWide 21\" cabinet with 5-ton blower\u003c\/strong\u003e — the correct furnace pairing for 2-5 ton R-32 cooling systems — if your system is a 5-ton condenser or heat pump, this is the unit you need\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eHeavy-duty aluminized-steel tubular heat exchanger\u003c\/strong\u003e — engineered for long-lasting durability and efficient heat transfer with wrinkle-bend technology for added dependability\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eSilicon nitride igniter\u003c\/strong\u003e — more durable than older hot surface igniters, reducing maintenance calls and replacement costs over the life of the unit\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eSelf-diagnosing control board\u003c\/strong\u003e — acts like a \"check engine light\" for your furnace, pinpointing issues fast and cutting service time and costs\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eLP convertible\u003c\/strong\u003e — easily field-converted to propane with optional kit, giving you fuel flexibility for your home\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eMetal flue venting required\u003c\/strong\u003e — straightforward installation using standard metal duct for safe, code-conforming exhaust\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eR-32 compatible\u003c\/strong\u003e — future-ready refrigerant support for pairing with modern R-32 cooling systems\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eAHRI Certified and ETL Listed\u003c\/strong\u003e — independently verified for safety and performance\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eMade in the USA\u003c\/strong\u003e — designed, engineered, and assembled domestically\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e⚠️ \u003cstrong\u003eMetal venting required\u003c\/strong\u003e — this is an 80% AFUE furnace and requires metal flue venting, not PVC.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e⚠️ \u003cstrong\u003eNot sure which 21\" model you need?\u003c\/strong\u003e If your cooling system is 2-4 tons, see the \u003cstrong\u003eGR9T800804CN\u003c\/strong\u003e. This unit — the GR9T800805CN — is specifically for homes with \u003cstrong\u003e5-ton cooling systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eInput: 80,000 BTU | Output: 64,000 BTU\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAFUE: 80%\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCabinet Width: 21\"\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStages: Two\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBlower Motor: 9-Speed ECM (5-Ton)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFuel Type: Natural Gas (LP Convertible)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eInstallation: Upflow \/ Horizontal\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eVenting: Metal\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eVoltage: 115V\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCompatible Cooling: 2-5 Ton R-32 Systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e 10-year limited parts + lifetime heat exchanger warranty with online registration within 60 days of installation.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"No Propane Conversion Kit","offer_id":53389230309690,"sku":null,"price":1972.0,"currency_code":"USD","in_stock":true},{"title":"+ Propane Conversion Kit ($99)","offer_id":53389230342458,"sku":"-LPM06","price":2071.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/3573\/2538\/files\/GR9T800805CN-s1_7d5c1c39-1848-4263-90a6-31af7aca99c3.jpg?v=1777494053","url":"https:\/\/hvacmore.com\/products\/goodman-100-000-btu-two-stage-gas-furnace-80-percent-afue-upflow-21-inch-cabinet-copy","provider":"HVAC MORE","version":"1.0","type":"link"}