{"product_id":"goodman-80-000-btu-80-afue-ecm-gas-furnace-upflow-horizontal-r-32-gr9s800803bna","title":"Goodman 80,000 BTU 80% AFUE Gas Furnace - Upflow\/Horizontal - R-32 | GR9S800803BNA","description":"\u003cstyle\u003e.gm-product{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;color:#1a1a2e;line-height:1.6;max-width:100%;overflow-wrap:break-word}.gm-product *{box-sizing:border-box}.gm-product h2,.gm-product h3{margin-top:0}.gm-product p{margin:0 0 12px}.gm-product a{color:#cc0000;text-decoration:none}.gm-product a:hover{text-decoration:underline}.gm-badges{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 32px}.gm-badge{display:inline-flex;align-items:center;gap:8px;background:#f0f4f8;border:1px solid #d1dce6;border-radius:8px;padding:8px 16px;font-size:13px;font-weight:600;color:#2d3748}.gm-badge 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h2,.gm-section-title{font-size:20px}}@media(max-width:480px){.gm-perf-cards{grid-template-columns:1fr}.gm-perf-card-num{font-size:28px}.gm-badge{font-size:12px;padding:6px 12px}}\u003c\/style\u003e\n\u003cdiv class=\"gm-product\"\u003e\n\u003cdiv class=\"gm-badges\"\u003e\n\u003cspan class=\"gm-badge gm-badge--accent\"\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003cpath d=\"M22 11.08V12a10 10 0 11-5.93-9.14\"\u003e\u003c\/path\u003e\u003cpolyline points=\"22 4 12 14.01 9 11.01\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e80% AFUE\u003c\/span\u003e\n\u003cspan class=\"gm-badge gm-badge--system\"\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003crect x=\"3\" y=\"3\" width=\"18\" height=\"18\" rx=\"2\"\u003e\u003c\/rect\u003e\u003cline x1=\"3\" y1=\"9\" x2=\"21\" y2=\"9\"\u003e\u003c\/line\u003e\u003c\/svg\u003e17-1\/2\" Wide Cabinet\u003c\/span\u003e\n\u003cspan class=\"gm-badge gm-badge--blue\"\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003cpolyline points=\"6 15 12 9 18 15\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003eUpflow \/ Horizontal\u003c\/span\u003e\n\u003cspan class=\"gm-badge gm-badge--warn\"\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 2C12 2 5 9 5 14a7 7 0 0014 0c0-5-7-12-7-12z\"\u003e\u003c\/path\u003e\u003c\/svg\u003eNatural Gas\u003c\/span\u003e\n\u003cspan class=\"gm-badge\"\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 6v6l4 2\"\u003e\u003c\/path\u003e\u003c\/svg\u003eR-32 Coil Compatible\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gm-callout\"\u003e\n\u003csvg width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cline x1=\"12\" y1=\"16\" x2=\"12\" y2=\"12\"\u003e\u003c\/line\u003e\u003cline x1=\"12\" y1=\"8\" x2=\"12.01\" y2=\"8\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eA note on \"R-32\" in the title:\u003c\/strong\u003e This is a gas furnace and does not contain refrigerant. The \"R-32\" designation means this furnace is engineered to serve as the indoor air-mover beneath an R-32 coil, with airflow and safety features that meet current A2L refrigerant system standards.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gm-section\"\u003e\n\u003ch2 class=\"gm-section-title\"\u003ePerformance at a Glance\u003c\/h2\u003e\n\u003cdiv class=\"gm-perf-cards\"\u003e\n\u003cdiv class=\"gm-perf-card\"\u003e\n\u003cdiv class=\"gm-perf-card-num\"\u003e80,000\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card-unit\"\u003eBTU\/h\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card-label\"\u003eHeating Input\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card\"\u003e\n\u003cdiv class=\"gm-perf-card-num\"\u003e64,000\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card-unit\"\u003eBTU\/h\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card-label\"\u003eHeating Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card\"\u003e\n\u003cdiv class=\"gm-perf-card-num\"\u003e80\u003cspan class=\"gm-perf-card-unit\" style=\"font-size:20px;vertical-align:baseline\"\u003e%\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card-unit\"\u003eAFUE\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card-label\"\u003eHeating Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card\"\u003e\n\u003cdiv class=\"gm-perf-card-num\"\u003e1\/2\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card-unit\"\u003eHP\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card-label\"\u003eBlower Motor\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card\"\u003e\n\u003cdiv class=\"gm-perf-card-num\" style=\"font-size:26px;\"\u003e17-1\/2\"\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card-unit\"\u003eWide\u003c\/div\u003e\n\u003cdiv class=\"gm-perf-card-label\"\u003eCabinet Size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gm-section\"\u003e\n\u003ch2 class=\"gm-section-title\"\u003eKey Features\u003c\/h2\u003e\n\u003cp class=\"gm-section-sub\"\u003eWhat sets the GR9S800803BNA apart\u003c\/p\u003e\n\u003cdiv class=\"gm-features\"\u003e\n\u003cdiv class=\"gm-feature\"\u003e\n\u003cdiv class=\"gm-feature-icon\"\u003e\u003csvg width=\"22\" height=\"22\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"white\" stroke-width=\"2\"\u003e\u003cpath d=\"M22 11.08V12a10 10 0 11-5.93-9.14\"\u003e\u003c\/path\u003e\u003cpolyline points=\"22 4 12 14.01 9 11.01\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003ch4\u003e80% AFUE Heating Efficiency\u003c\/h4\u003e\n\u003cp\u003eConverts 80% of the natural gas it burns into usable heat for your home. 80% AFUE meets federal minimum efficiency requirements for residential gas furnaces and is the baseline for dependable, cost-effective home heating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-feature\"\u003e\n\u003cdiv class=\"gm-feature-icon\"\u003e\u003csvg width=\"22\" height=\"22\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"white\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 2C12 2 5 9 5 14a7 7 0 0014 0c0-5-7-12-7-12z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003ch4\u003eAluminized Steel Heat Exchanger\u003c\/h4\u003e\n\u003cp\u003eA durable aluminized-steel tubular heat exchanger resists corrosion and thermal fatigue over long service life. The heat exchanger is where combustion heat transfers to the airflow — its durability is the single most important factor in furnace longevity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-feature\"\u003e\n\u003cdiv class=\"gm-feature-icon\"\u003e\u003csvg width=\"22\" height=\"22\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"white\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"3\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 2v4M12 18v4M4.93 4.93l2.83 2.83M16.24 16.24l2.83 2.83M2 12h4M18 12h4M4.93 19.07l2.83-2.83M16.24 7.76l2.83-2.83\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003ch4\u003e1\/2 HP Multi-Speed ECM Blower\u003c\/h4\u003e\n\u003cp\u003eA 1\/2 HP multi-speed ECM blower motor moves conditioned air through your home's ductwork in both heating and cooling modes. Your HVAC contractor will select the correct blower speed for your home's airflow requirements at installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-feature\"\u003e\n\u003cdiv class=\"gm-feature-icon\"\u003e\u003csvg width=\"22\" height=\"22\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"white\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003cpolyline points=\"6 15 12 9 18 15\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003ch4\u003eUpflow or Horizontal Installation\u003c\/h4\u003e\n\u003cp\u003eDesigned for flexible installation — upflow position (cool air enters the bottom, warm air exits the top) or horizontal (airflow moves sideways). This lets your contractor fit the furnace into a utility room, closet, or attic based on your home's ductwork layout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-feature\"\u003e\n\u003cdiv class=\"gm-feature-icon\"\u003e\u003csvg width=\"22\" height=\"22\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"white\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"\u003e\u003c\/polygon\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003ch4\u003eElectronic Ignition\u003c\/h4\u003e\n\u003cp\u003eModern electronic ignition eliminates the standing pilot light of older furnaces, reducing gas waste during idle periods. Reliable ignition across the furnace's lifetime with no manual relighting required after power outages or vacation shutoffs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-feature\"\u003e\n\u003cdiv class=\"gm-feature-icon\"\u003e\u003csvg width=\"22\" height=\"22\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"white\" stroke-width=\"2\"\u003e\u003cpolygon points=\"12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2\"\u003e\u003c\/polygon\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003ch4\u003eBacked by Goodman\u003c\/h4\u003e\n\u003cp\u003eCovered by Goodman's 10-Year Parts Limited Warranty and Lifetime Heat Exchanger Limited Warranty when registered within 60 days of installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-features-detail\" style=\"margin-top:32px;\"\u003e\n\u003cp\u003eThis Goodman GR9S80 single-stage gas furnace produces 80,000 BTU of heating output at 80% AFUE efficiency. The aluminized-steel dual-diameter tubular heat exchanger and hot-surface igniter provide reliable ignition, and the multi-speed ECM blower motor delivers quiet, efficient air circulation in upflow, downflow, or horizontal installations. AHRI Certified and ETL Listed; backed by a 99-year heat exchanger limited warranty with product registration.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty aluminized-steel heat exchanger\u003c\/strong\u003e — dual-diameter tubular design rated for long service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-stage gas valve\u003c\/strong\u003e — reliable on\/off heating control with a durable hot-surface igniter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-speed ECM blower motor\u003c\/strong\u003e — energy-efficient circulation with multiple airflow taps for system matching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet, single-speed draft inducer\u003c\/strong\u003e — consistent venting performance with reduced operating noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-diagnostic control board\u003c\/strong\u003e — stores fault history for easier troubleshooting during service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor-coded low-voltage terminals\u003c\/strong\u003e — simplifies thermostat wiring during installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-position installation\u003c\/strong\u003e — supports upflow and horizontal configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProvisions for accessories\u003c\/strong\u003e — compatible with electronic air cleaners and humidifiers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e99-year heat exchanger limited warranty\u003c\/strong\u003e — with product registration within 60 days of installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gm-section\"\u003e\n\u003ch2 class=\"gm-section-title\"\u003eComplete Specifications\u003c\/h2\u003e\n\u003cp class=\"gm-section-sub\"\u003eGR9S800803BNA — Goodman 80,000 BTU 80% AFUE Gas Furnace\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003eModel \u0026amp; Configuration\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eGR9S800803BNA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeating Input\u003c\/td\u003e\n\u003ctd\u003e80,000 BTU\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeating Output\u003c\/td\u003e\n\u003ctd\u003e64,000 BTU\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAFUE Rating\u003c\/td\u003e\n\u003ctd\u003e80%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCabinet Size\u003c\/td\u003e\n\u003ctd\u003eB (17-1\/2\" wide)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation Orientation\u003c\/td\u003e\n\u003ctd\u003eUpflow \/ Horizontal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Type\u003c\/td\u003e\n\u003ctd\u003eNatural Gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR-32 Coil Compatible\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003eBlower\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlower Motor HP\u003c\/td\u003e\n\u003ctd\u003e1\/2 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlower Type\u003c\/td\u003e\n\u003ctd\u003eMulti-Speed ECM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003eElectrical\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Circuit Ampacity (MCA)\u003c\/td\u003e\n\u003ctd\u003e7.7 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Overcurrent Protection (MOCP)\u003c\/td\u003e\n\u003ctd\u003e15 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003ePhysical\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e116 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gm-section\"\u003e\n\u003ch2 class=\"gm-section-title\"\u003eWarranty Coverage\u003c\/h2\u003e\n\u003cp class=\"gm-section-sub\"\u003eProtection you can count on when properly registered\u003c\/p\u003e\n\u003cdiv class=\"gm-warranty-grid\"\u003e\n\u003cdiv class=\"gm-warranty-item\"\u003e\n\u003cdiv class=\"gm-warranty-years\"\u003e10 Year\u003c\/div\u003e\n\u003cdiv class=\"gm-warranty-label\"\u003eParts Limited Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-warranty-item\"\u003e\n\u003cdiv class=\"gm-warranty-years\"\u003eLifetime\u003c\/div\u003e\n\u003cdiv class=\"gm-warranty-label\"\u003eHeat Exchanger Limited Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top:16px;font-size:.9em;color:#6b7280;\"\u003eWarranty terms require online product registration within 60 days of installation. See official Goodman warranty documents for complete terms and conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gm-section gm-spec-sheets\"\u003e\n\u003cstyle\u003e\n.gm-spec-sheets-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;margin-top:16px}\n.gm-spec-link{display:flex;align-items:center;gap:12px;padding:14px 18px;background:#f8fafc;border:1px solid #d1dce6;border-radius:10px;text-decoration:none;color:#1a1a2e;transition:background 0.15s,border-color 0.15s}\n.gm-spec-link:hover{background:#eef2f7;border-color:#94a3b8;text-decoration:none}\n.gm-spec-link svg{flex-shrink:0;color:#cc0000}\n.gm-spec-link strong{font-size:14px;font-weight:700;color:#1a1a2e}\n\u003c\/style\u003e\n\u003ch2 class=\"gm-section-title\"\u003eDocumentation\u003c\/h2\u003e\n\u003cp class=\"gm-section-sub\"\u003eManufacturer spec sheets for this product\u003c\/p\u003e\n\u003cdiv class=\"gm-spec-sheets-grid\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0708\/6279\/8913\/files\/GR9S80.pdf?v=1777321861\" target=\"_blank\" rel=\"noopener\" class=\"gm-spec-link\"\u003e\u003csvg width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M14 2H6a2 2 0 00-2 2v16a2 2 0 002 2h12a2 2 0 002-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003cline x1=\"12\" y1=\"18\" x2=\"12\" y2=\"12\"\u003e\u003c\/line\u003e\u003cpolyline points=\"9 15 12 12 15 15\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003cspan\u003e\u003cstrong\u003eFurnace Spec Sheet\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"font-size:12px;opacity:0.85\"\u003ePDF — Tap to download\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"gm-section gm-faq\"\u003e\n\u003ch2 class=\"gm-section-title\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"gm-faq-item\"\u003e\n\u003cdiv class=\"gm-faq-q\"\u003eWhat does AFUE mean?\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-a\"\u003eAFUE (Annual Fuel Utilization Efficiency) measures how much of the gas a furnace burns actually becomes usable heat for your home. An 80% AFUE rating means 80 cents of every dollar spent on fuel heats your home; the remainder exits through the flue during combustion. 80% AFUE is the federal baseline efficiency for residential gas furnaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-item\"\u003e\n\u003cdiv class=\"gm-faq-q\"\u003eIs 80% AFUE efficient enough for my home?\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-a\"\u003eAn 80% AFUE furnace is the standard baseline for regions with mild-to-moderate winters. In colder climates or if your heating bills are a priority, higher-efficiency furnaces (90–97% AFUE) cost more upfront but use less fuel over time. The right choice depends on your local climate, fuel prices, installation costs, and how long you'll own the home.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-item\"\u003e\n\u003cdiv class=\"gm-faq-q\"\u003eWhat size home does a 80,000 BTU furnace heat?\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-a\"\u003eA 80,000 BTU\/h input furnace (about 64,000 BTU\/h output at 80% AFUE) is generally appropriate for homes in the 1,600–2,400 sq. ft. range, though climate zone, insulation quality, window area, and home orientation all affect heating load. A professional Manual J load calculation is the most accurate way to size a furnace for your specific home.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-item\"\u003e\n\u003cdiv class=\"gm-faq-q\"\u003eWhat does \"Upflow \/ Horizontal\" mean?\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-a\"\u003eThis furnace can be installed in two positions. \u003cem\u003eUpflow\u003c\/em\u003e means the furnace sits vertically with cool return air entering the bottom and warm supply air exiting the top — typical for basement or utility-room installations. \u003cem\u003eHorizontal\u003c\/em\u003e means it lays on its side with airflow moving sideways — common in attics or crawlspaces. Your HVAC contractor will select the orientation based on your home's ductwork and available install space.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-item\"\u003e\n\u003cdiv class=\"gm-faq-q\"\u003eWhy does this gas furnace title mention \"R-32\"?\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-a\"\u003eThis is a gas furnace — it does not contain refrigerant. The \"R-32\" designation indicates the furnace is engineered to serve as the indoor air handler beneath an R-32 air conditioner or heat pump coil, with airflow characteristics and A2L safety compliance required for current R-32 HVAC systems. If you're replacing an older furnace paired with an R-410A coil, be aware that swapping just one side of the system may require updating the other.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-item\"\u003e\n\u003cdiv class=\"gm-faq-q\"\u003eHow do I know if this cabinet size fits my home?\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-a\"\u003eGoodman cabinet widths are: A = 14\", B = 17-1\/2\", C = 21\", D = 24-1\/2\". The GR9S800803BNA is a Cabinet B (17-1\/2\" wide). Cabinet width matters because the coil or air handler sitting on top needs to match — a mismatch means a transition piece or new coil. If you're replacing an existing Goodman furnace, matching the cabinet letter is usually the simplest path. Your HVAC contractor can confirm fit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-item\"\u003e\n\u003cdiv class=\"gm-faq-q\"\u003eCan this furnace run on LP \/ propane instead of natural gas?\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-a\"\u003eThis specific model is configured for Natural Gas. Some Goodman furnaces can be field-converted between natural gas and LP using a conversion kit; compatibility depends on the specific model and burner configuration. Consult the installation manual or your HVAC contractor before attempting any fuel conversion — it's not a DIY operation and improper conversion can be dangerous.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-item\"\u003e\n\u003cdiv class=\"gm-faq-q\"\u003eWhat maintenance does a gas furnace need?\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-a\"\u003eChange the air filter every 1–3 months during heating season. Regular maintenance keeps the furnace efficient, extends its service life, and catches safety issues (especially carbon monoxide risks) early.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-item\"\u003e\n\u003cdiv class=\"gm-faq-q\"\u003eHow do I register for the warranty?\u003c\/div\u003e\n\u003cdiv class=\"gm-faq-a\"\u003eRegister the unit online at Goodman's warranty registration page within 60 days of installation. You'll need the model number (GR9S800803BNA), serial number (found on the data plate), installation date, and installing contractor information. Without timely registration, warranty terms revert to a shorter base period.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"text-align:center;color:#6b7280;margin:48px 0 0;font-size:14px;\"\u003eDesigned, engineered, and assembled in the U.S.A. by Goodman Manufacturing — a member of the Daikin group.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":43753865117761,"sku":"GR9S800803BNA","price":1246.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/6279\/8913\/files\/80-upflw-lftqtr-hrb5374677073d629eabb1ff0300454ea0_47c4aedf-4de6-46b7-843b-3cc91027dd7e.jpg?v=1775683070","url":"https:\/\/aceairdirect.com\/products\/goodman-80-000-btu-80-afue-ecm-gas-furnace-upflow-horizontal-r-32-gr9s800803bna","provider":"Ace Air Direct","version":"1.0","type":"link"}