{"product_id":"goodman-80-000-btu-80-gas-furnace-21-width-upflow-horizontal-single-stage-115v-r32-3","title":"Goodman - 80,000 BTU 80% Gas Furnace - 21\" Width - Upflow \/ Horizontal - Single Stage - 115V - R32 - GR9S800805CU","description":"\u003ch2\u003e\u003cspan\u003eGoodman - 80,000 BTU 80% Gas Furnace - 21\" Width - Upflow \/ Horizontal - Single Stage - 115V - R32 - GR9S800805CU\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe GR9S800805CU Goodman gas furnace features high-quality construction and efficient operation at a great value. The GR9S800805CU single-stage, multi-speed furnace utilizes Goodman's superior heat exchanger design to provide efficient, reliable heating to your home. If you're looking to cut your energy bills and improve your comfort without breaking the bank, your search stops with the Goodman GR9S800805CU.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eThis furnace is ideal to heat a medium-sized house (depending on climate)\u003c\/li\u003e\n\u003cli\u003e80,000 BTU 80% efficient natural gas furnace\u003c\/li\u003e\n\u003cli\u003eRequires metal flue venting\u003c\/li\u003e\n\u003cli\u003eCan be used in the upflow or horizontal orientation\u003c\/li\u003e\n\u003cli\u003eUltra-Low NOx Compliant for California\u003c\/li\u003e\n\u003cli\u003eInnovative design for electrical efficiency, safety, and lower sound output\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eSpecifications\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003c\/span\u003e\n\u003c\/h5\u003e\n\u003cstyle type=\"text\/css\"\u003e\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-cly1{text-align:left;vertical-align:middle}\n.tg .tg-wa1i{font-weight:bold;text-align:center;vertical-align:middle}\n\u003c\/style\u003e\n\u003ctable class=\"tg\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"tg-wa1i\"\u003eSKU\u003c\/th\u003e\n\u003cth class=\"tg-cly1\"\u003eGR9S800805CU\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eWeight (in lbs)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e132.000000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eAHRI Certificate Number\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e207599844\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eAirflow Direction\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eUpflow\/Horizontal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eExhaust Flue Requirement\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eMetal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eR-32 Compliant\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eBrand\/Manufacturer\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eGoodman\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eProduct Features\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eNew Refrigerant Compliant, Ultra-Low NOx\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eFurnace Efficiency \/ AFUE\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e80%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eHeating BTU\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e80,000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eBlower Motor\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e9-Speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eMaximum CFM\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e2200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eConfiguration\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eUpflow\/Horizontal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eElectrical\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e115 V. 1 Phase 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eMax Breaker Size\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e25 Amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eMin. Breaker Size\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e15.7 Amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eLow NOx\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eUltra Low NOx\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eBurner Stages\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eSingle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eFuel Type\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eNatural Gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eHeight\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e33 3\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eWidth\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e21\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eDepth\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e28\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eManual\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0794\/3104\/1346\/files\/GR9S80_GD9S80-Install-Manual.pdf?v=1759910039\" target=\"_blank\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003eInstallation Manual\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0794\/3104\/1346\/files\/GR9S80_Product_Specs.pdf?v=1759910035\" target=\"_blank\"\u003e\u003cstrong\u003eSpecifications Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul data-start=\"94\" data-end=\"685\"\u003e\n\u003cli data-section-id=\"j992mf\" data-start=\"94\" data-end=\"178\"\u003e\n\u003cp data-start=\"96\" data-end=\"178\"\u003e\u003cstrong data-start=\"96\" data-end=\"117\"\u003eReliable Heating:\u003c\/strong\u003e 80,000 BTU output efficiently warms small to medium homes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1vjzcro\" data-start=\"179\" data-end=\"273\"\u003e\n\u003cp data-start=\"181\" data-end=\"273\"\u003e\u003cstrong data-start=\"181\" data-end=\"204\"\u003eEnergy Performance:\u003c\/strong\u003e 80% AFUE provides solid efficiency while keeping costs reasonable.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"17gzkpl\" data-start=\"274\" data-end=\"360\"\u003e\n\u003cp data-start=\"276\" data-end=\"360\"\u003e\u003cstrong data-start=\"276\" data-end=\"302\"\u003eFlexible Installation:\u003c\/strong\u003e 21\" width supports upflow or horizontal configurations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"rplx8f\" data-start=\"361\" data-end=\"443\"\u003e\n\u003cp data-start=\"363\" data-end=\"443\"\u003e\u003cstrong data-start=\"363\" data-end=\"388\"\u003eConsistent Operation:\u003c\/strong\u003e Single-stage design ensures steady, dependable heat.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"5fwvfu\" data-start=\"444\" data-end=\"518\"\u003e\n\u003cp data-start=\"446\" data-end=\"518\"\u003e\u003cstrong data-start=\"446\" data-end=\"467\"\u003eEasy Integration:\u003c\/strong\u003e 115V power supply fits most residential systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ql9k2j\" data-start=\"519\" data-end=\"598\"\u003e\n\u003cp data-start=\"521\" data-end=\"598\"\u003e\u003cstrong data-start=\"521\" data-end=\"539\"\u003eDurable Build:\u003c\/strong\u003e Engineered for long-term reliability in varied climates.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1u038ps\" data-start=\"599\" data-end=\"685\"\u003e\n\u003cp data-start=\"601\" data-end=\"685\"\u003e\u003cstrong data-start=\"601\" data-end=\"621\"\u003eQuiet Operation:\u003c\/strong\u003e Designed for minimal operational noise during heating cycles.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"130\" data-end=\"344\"\u003e\u003cstrong data-start=\"130\" data-end=\"178\"\u003eQ: What size homes is this furnace best for?\u003c\/strong\u003e\u003cbr data-start=\"178\" data-end=\"181\"\u003eA: With \u003cstrong data-start=\"189\" data-end=\"220\"\u003e80,000 BTU heating capacity\u003c\/strong\u003e and \u003cstrong data-start=\"225\" data-end=\"237\"\u003e80% AFUE\u003c\/strong\u003e, this model is ideal for \u003cstrong data-start=\"263\" data-end=\"307\"\u003emedium‑sized homes or residential spaces\u003c\/strong\u003e depending on insulation and climate.\u003c\/p\u003e\n\u003cp data-start=\"346\" data-end=\"565\"\u003e\u003cstrong data-start=\"346\" data-end=\"383\"\u003eQ: How efficient is this furnace?\u003c\/strong\u003e\u003cbr data-start=\"383\" data-end=\"386\"\u003eA: It features an \u003cstrong data-start=\"404\" data-end=\"434\"\u003e80% AFUE efficiency rating\u003c\/strong\u003e, meaning \u003cstrong data-start=\"444\" data-end=\"495\"\u003eabout 80% of fuel energy is converted into heat\u003c\/strong\u003e, delivering dependable performance at a competitive efficiency level.\u003c\/p\u003e\n\u003cp data-start=\"567\" data-end=\"745\"\u003e\u003cstrong data-start=\"567\" data-end=\"604\"\u003eQ: What does “single stage” mean?\u003c\/strong\u003e\u003cbr data-start=\"604\" data-end=\"607\"\u003eA: A \u003cstrong data-start=\"612\" data-end=\"638\"\u003esingle‑stage gas valve\u003c\/strong\u003e operates at full heating output every time, offering \u003cstrong data-start=\"692\" data-end=\"744\"\u003estraightforward and reliable heating performance\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"747\" data-end=\"930\"\u003e\u003cstrong data-start=\"747\" data-end=\"803\"\u003eQ: What installation configurations does it support?\u003c\/strong\u003e\u003cbr data-start=\"803\" data-end=\"806\"\u003eA: Designed for both \u003cstrong data-start=\"827\" data-end=\"852\"\u003eUpflow and Horizontal\u003c\/strong\u003e installs, giving flexibility for basements, attics, closets, or crawl spaces.\u003c\/p\u003e\n\u003cp data-start=\"932\" data-end=\"1072\"\u003e\u003cstrong data-start=\"932\" data-end=\"976\"\u003eQ: What are the electrical requirements?\u003c\/strong\u003e\u003cbr data-start=\"976\" data-end=\"979\"\u003eA: Runs on \u003cstrong data-start=\"990\" data-end=\"1018\"\u003e115 V single‑phase power\u003c\/strong\u003e, standard for most residential furnace installations.\u003c\/p\u003e\n\u003cp data-start=\"1074\" data-end=\"1243\"\u003e\u003cstrong data-start=\"1074\" data-end=\"1123\"\u003eQ: What type of blower motor does it include?\u003c\/strong\u003e\u003cbr data-start=\"1123\" data-end=\"1126\"\u003eA: Features a \u003cstrong data-start=\"1140\" data-end=\"1172\"\u003emulti‑speed ECM blower motor\u003c\/strong\u003e, providing \u003cstrong data-start=\"1184\" data-end=\"1224\"\u003esmooth airflow and quieter operation\u003c\/strong\u003e than basic motors.\u003c\/p\u003e\n\u003cp data-start=\"1245\" data-end=\"1427\"\u003e\u003cstrong data-start=\"1245\" data-end=\"1290\"\u003eQ: What fuel and venting does it require?\u003c\/strong\u003e\u003cbr data-start=\"1290\" data-end=\"1293\"\u003eA: Powered by \u003cstrong data-start=\"1307\" data-end=\"1322\"\u003enatural gas\u003c\/strong\u003e (convertible to LP with an optional kit) and uses \u003cstrong data-start=\"1373\" data-end=\"1395\"\u003emetal flue venting\u003c\/strong\u003e typical of an 80% AFUE furnace.\u003c\/p\u003e\n\u003cp data-start=\"1429\" data-end=\"1585\"\u003e\u003cstrong data-start=\"1429\" data-end=\"1483\"\u003eQ: Is this furnace compatible with modern systems?\u003c\/strong\u003e\u003cbr data-start=\"1483\" data-end=\"1486\"\u003eA: Yes — it integrates easily with standard split HVAC configurations and R‑32 refrigerant systems.\u003c\/p\u003e\n\u003cp data-start=\"1587\" data-end=\"1768\"\u003e\u003cstrong data-start=\"1587\" data-end=\"1620\"\u003eQ: What are the key benefits?\u003c\/strong\u003e\u003cbr data-start=\"1620\" data-end=\"1623\"\u003eA: Offers \u003cstrong data-start=\"1633\" data-end=\"1662\"\u003ereliable, consistent heat\u003c\/strong\u003e, \u003cstrong data-start=\"1664\" data-end=\"1689\"\u003eflexible installation\u003c\/strong\u003e, \u003cstrong data-start=\"1691\" data-end=\"1715\"\u003edurable construction\u003c\/strong\u003e, and \u003cstrong data-start=\"1721\" data-end=\"1741\"\u003esimple operation\u003c\/strong\u003e at a value‑oriented price.\u003c\/p\u003e\n\u003ch5\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"19v370a\" data-start=\"109\" data-end=\"189\"\u003e\n\u003cp data-start=\"111\" data-end=\"189\"\u003e\u003cstrong data-start=\"111\" data-end=\"151\"\u003eReplace air filters every 1–3 months\u003c\/strong\u003e to maintain airflow and efficiency.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ic9sg7\" data-start=\"190\" data-end=\"270\"\u003e\n\u003cp data-start=\"192\" data-end=\"270\"\u003eKeep \u003cstrong data-start=\"197\" data-end=\"230\"\u003esupply and return vents clear\u003c\/strong\u003e to ensure proper heating performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1tvp6ez\" data-start=\"271\" data-end=\"371\"\u003e\n\u003cp data-start=\"273\" data-end=\"371\"\u003eMaintain \u003cstrong data-start=\"282\" data-end=\"326\"\u003e2–3 feet of clearance around the furnace\u003c\/strong\u003e for safe operation and proper ventilation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1qdq7uq\" data-start=\"372\" data-end=\"462\"\u003e\n\u003cp data-start=\"374\" data-end=\"462\"\u003eInspect the \u003cstrong data-start=\"386\" data-end=\"411\"\u003econdensate drain line\u003c\/strong\u003e periodically to prevent clogs and water buildup.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1e44rxl\" data-start=\"463\" data-end=\"554\"\u003e\n\u003cp data-start=\"465\" data-end=\"554\"\u003e\u003cstrong data-start=\"465\" data-end=\"508\"\u003eCheck thermostat settings and operation\u003c\/strong\u003e to maintain consistent temperature control.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"tmmhoi\" data-start=\"555\" data-end=\"621\"\u003e\n\u003cp data-start=\"557\" data-end=\"621\"\u003eExamine \u003cstrong data-start=\"565\" data-end=\"595\"\u003event pipes and connections\u003c\/strong\u003e for leaks or blockages.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1w5f25n\" data-start=\"622\" data-end=\"732\"\u003e\n\u003cp data-start=\"624\" data-end=\"732\"\u003eListen for \u003cstrong data-start=\"635\" data-end=\"653\"\u003eunusual noises\u003c\/strong\u003e such as rattling, buzzing, or hissing, which may indicate mechanical issues.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1xqr6xe\" data-start=\"733\" data-end=\"811\"\u003e\n\u003cp data-start=\"735\" data-end=\"811\"\u003eClean \u003cstrong data-start=\"741\" data-end=\"785\"\u003eblower compartment and internal surfaces\u003c\/strong\u003e to reduce dust buildup.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1qx9rnq\" data-start=\"812\" data-end=\"870\"\u003e\n\u003cp data-start=\"814\" data-end=\"870\"\u003eTest \u003cstrong data-start=\"819\" data-end=\"848\"\u003ecarbon monoxide detectors\u003c\/strong\u003e for safe operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ovwicg\" data-start=\"871\" data-end=\"991\" data-is-last-node=\"\"\u003e\n\u003cp data-start=\"873\" data-end=\"991\" data-is-last-node=\"\"\u003eSchedule \u003cstrong data-start=\"882\" data-end=\"917\"\u003eannual professional maintenance\u003c\/strong\u003e to inspect burners, heat exchanger, gas connections, and safety controls.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":46812779446409,"sku":"GR9S800805CU","price":2255.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/2443\/9177\/files\/80_upflow_frontleft-800x800_e6fd54b5-8148-477d-84ea-7ffc20624cc6.webp?v=1779806526","url":"https:\/\/mobility-ready.com\/products\/goodman-80-000-btu-80-gas-furnace-21-width-upflow-horizontal-single-stage-115v-r32-3","provider":"Supplies for Happy Tails","version":"1.0","type":"link"}