{"product_id":"goodman-100-000-btu-80-low-nox-gas-furnace-21-width-downflow-horizontal-two-stage-115v-r32","title":"Goodman - 100,000 BTU 80% Low NOx Gas Furnace - 21\" Width - Downflow \/ Horizontal - Two Stage - 115V - R32 - GD9T801005CX","description":"\u003ch2\u003e\u003cspan\u003eGoodman - 100,000 BTU 80% Low NOx Gas Furnace - 21\" Width - Downflow \/ Horizontal - Two Stage - 115V - R32 - GD9T801005CX\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe GD9T801005CX Goodman gas furnace features high-quality construction and efficient operation at a great value. The GD9T801005CX two-stage, 9-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 GD9T801005CX.\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 to large house (depending on climate)\u003c\/li\u003e\n\u003cli\u003e100,000 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 downflow or horizontal orientation\u003c\/li\u003e\n\u003cli\u003eCan be converted to an LP furnace with a conversion kit (sold separately)\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 colspan=\"2\" class=\"tg-wa1i\"\u003eGoodman 80% 100,000 BTU Two Stage Gas Furnace - 21\" Width - Downflow \/ Horizontal\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eSKU\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eGD9T801005CX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eWeight (in lbs)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e131.000000\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\"\u003e215358016\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\"\u003eDownflow\/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\"\u003eLow NOx, New Refrigerant Compliant\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\"\u003e100,000\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 - ECM\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\"\u003e2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-wa1i\"\u003eConfiguration\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eDownflow\/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\"\u003e14.3 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\"\u003eLow 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\"\u003eTwo\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\"\u003ePropane, Natural 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\/GR9T80_GD9T80-Install-Manual_309113a8-345e-4e4c-8f69-6a2c76096eea.pdf?v=1759920676\" rel=\"noopener\" 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 rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0794\/3104\/1346\/files\/GD9T80_Spec_Sheet_5645950e-85c2-4fd0-9ba3-9d7a28d6ac0e.pdf?v=1759920618\" target=\"_blank\"\u003e\u003cstrong\u003eSpecifications Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 style=\"font-weight: bold;\"\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"32cosk\" data-start=\"27\" data-end=\"215\"\u003e\n\u003cp data-start=\"29\" data-end=\"215\"\u003e\u003cstrong data-start=\"29\" data-end=\"61\"\u003e100,000 BTU Heating Capacity\u003c\/strong\u003e – Provides \u003cstrong data-start=\"73\" data-end=\"98\"\u003estrong heating output\u003c\/strong\u003e for medium to large homes, delivering reliable warmth when it’s needed most. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"lpd9s0\" data-start=\"216\" data-end=\"386\"\u003e\n\u003cp data-start=\"218\" data-end=\"386\"\u003e\u003cstrong data-start=\"218\" data-end=\"241\"\u003e80% AFUE Efficiency\u003c\/strong\u003e – A \u003cstrong data-start=\"246\" data-end=\"290\"\u003evalue‑focused standard‑efficiency rating\u003c\/strong\u003e that balances upfront cost with consistent performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"3jq50g\" data-start=\"387\" data-end=\"586\"\u003e\n\u003cp data-start=\"389\" data-end=\"586\"\u003e\u003cstrong data-start=\"389\" data-end=\"412\"\u003eTwo‑Stage Gas Valve\u003c\/strong\u003e – Offers \u003cstrong data-start=\"422\" data-end=\"496\"\u003equieter operation, smoother temperature control, and better energy use\u003c\/strong\u003e than single‑stage units under varying conditions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1hu0bj0\" data-start=\"587\" data-end=\"743\"\u003e\n\u003cp data-start=\"589\" data-end=\"743\"\u003e\u003cstrong data-start=\"589\" data-end=\"621\"\u003eMulti‑Speed ECM Blower Motor\u003c\/strong\u003e – Efficient airflow management reduces noise and improves comfort across seasons. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"hkwm89\" data-start=\"744\" data-end=\"929\"\u003e\n\u003cp data-start=\"746\" data-end=\"929\"\u003e\u003cstrong data-start=\"746\" data-end=\"779\"\u003eCalifornia Low NOx Compliance\u003c\/strong\u003e – Reduces harmful nitrogen oxide emissions for \u003cstrong data-start=\"827\" data-end=\"873\"\u003emore environmentally responsible operation\u003c\/strong\u003e where required. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1trl8x5\" data-start=\"930\" data-end=\"1129\"\u003e\n\u003cp data-start=\"932\" data-end=\"1129\"\u003e\u003cstrong data-start=\"932\" data-end=\"967\"\u003eDownflow\/Horizontal Flexibility\u003c\/strong\u003e – Supports \u003cstrong data-start=\"979\" data-end=\"1017\"\u003emultiple installation orientations\u003c\/strong\u003e, making it easier to fit in attics, basements, or tight utility spaces. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"zx6qaj\" data-start=\"1130\" data-end=\"1305\"\u003e\n\u003cp data-start=\"1132\" data-end=\"1305\"\u003e\u003cstrong data-start=\"1132\" data-end=\"1162\"\u003eDurable, Insulated Cabinet\u003c\/strong\u003e – Heavy‑gauge steel design with low air leakage enhances \u003cstrong data-start=\"1220\" data-end=\"1264\"\u003equiet operation and long‑term durability\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"ay9415\" data-start=\"1306\" data-end=\"1465\"\u003e\n\u003cp data-start=\"1308\" data-end=\"1465\"\u003e\u003cstrong data-start=\"1308\" data-end=\"1335\"\u003e115 V Residential Power\u003c\/strong\u003e – Compatible with standard electrical service for \u003cstrong data-start=\"1386\" data-end=\"1424\"\u003esimplified wiring and installation\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 style=\"font-weight: bold;\"\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"139\" data-end=\"393\"\u003e\u003cstrong data-start=\"139\" data-end=\"188\"\u003eQ: What size home is this furnace suited for?\u003c\/strong\u003e\u003cbr data-start=\"188\" data-end=\"191\"\u003eA: With \u003cstrong data-start=\"199\" data-end=\"254\"\u003e100,000 BTU input and 80% AFUE (≈80,000 BTU output)\u003c\/strong\u003e, it’s well‑suited for \u003cstrong data-start=\"277\" data-end=\"302\"\u003emedium to large homes\u003c\/strong\u003e when properly sized based on climate and insulation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"395\" data-end=\"655\"\u003e\u003cstrong data-start=\"395\" data-end=\"428\"\u003eQ: What does “80% AFUE” mean?\u003c\/strong\u003e\u003cbr data-start=\"428\" data-end=\"431\"\u003eA: \u003cstrong data-start=\"434\" data-end=\"446\"\u003e80% AFUE\u003c\/strong\u003e means \u003cstrong data-start=\"453\" data-end=\"516\"\u003e80% of the fuel’s energy is converted to heat for your home\u003c\/strong\u003e, with the rest lost through flue venting — a common efficiency for reliable residential performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"657\" data-end=\"931\"\u003e\u003cstrong data-start=\"657\" data-end=\"713\"\u003eQ: What are the benefits of the two‑stage gas valve?\u003c\/strong\u003e\u003cbr data-start=\"713\" data-end=\"716\"\u003eA: The \u003cstrong data-start=\"723\" data-end=\"746\"\u003etwo‑stage gas valve\u003c\/strong\u003e operates at a lower setting most of the time for \u003cstrong data-start=\"796\" data-end=\"855\"\u003equieter heating, better comfort, and reduced energy use\u003c\/strong\u003e, switching to full power when needed. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"933\" data-end=\"1185\"\u003e\u003cstrong data-start=\"933\" data-end=\"978\"\u003eQ: Does this model support low emissions?\u003c\/strong\u003e\u003cbr data-start=\"978\" data-end=\"981\"\u003eA: Yes — it’s \u003cstrong data-start=\"995\" data-end=\"1027\"\u003eCalifornia Low NOx compliant\u003c\/strong\u003e, meaning \u003cstrong data-start=\"1037\" data-end=\"1073\"\u003ereduced nitrogen oxide emissions\u003c\/strong\u003e for better environmental performance (outside some restricted districts). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1187\" data-end=\"1413\"\u003e\u003cstrong data-start=\"1187\" data-end=\"1232\"\u003eQ: What type of blower motor does it use?\u003c\/strong\u003e\u003cbr data-start=\"1232\" data-end=\"1235\"\u003eA: A \u003cstrong data-start=\"1240\" data-end=\"1272\"\u003emulti‑speed ECM blower motor\u003c\/strong\u003e delivers \u003cstrong data-start=\"1282\" data-end=\"1344\"\u003eefficient airflow, quieter operation, and improved comfort\u003c\/strong\u003e compared with standard motors. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1415\" data-end=\"1634\"\u003e\u003cstrong data-start=\"1415\" data-end=\"1458\"\u003eQ: Where can this furnace be installed?\u003c\/strong\u003e\u003cbr data-start=\"1458\" data-end=\"1461\"\u003eA: Supports \u003cstrong data-start=\"1473\" data-end=\"1500\"\u003edownflow and horizontal\u003c\/strong\u003e installation, offering flexibility for \u003cstrong data-start=\"1540\" data-end=\"1595\"\u003eattics, crawl spaces, utility rooms, or tight areas\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1636\" data-end=\"1846\"\u003e\u003cstrong data-start=\"1636\" data-end=\"1673\"\u003eQ: Is it compatible with propane?\u003c\/strong\u003e\u003cbr data-start=\"1673\" data-end=\"1676\"\u003eA: Yes — it’s \u003cstrong data-start=\"1690\" data-end=\"1721\"\u003efactory‑set for natural gas\u003c\/strong\u003e but \u003cstrong data-start=\"1726\" data-end=\"1757\"\u003econvertible to propane (LP)\u003c\/strong\u003e with an optional conversion kit by a professional.\u003c\/p\u003e\n\u003ch5 style=\"font-weight: bold;\"\u003e\n\u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"newtl2\" data-start=\"127\" data-end=\"244\"\u003e\n\u003cp data-start=\"129\" data-end=\"244\"\u003e\u003cstrong data-start=\"129\" data-end=\"170\"\u003eReplace Air Filters Every 1–3 Months:\u003c\/strong\u003e Maintains airflow, efficiency, and protects the two-stage blower motor.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"bwlkqm\" data-start=\"245\" data-end=\"375\"\u003e\n\u003cp data-start=\"247\" data-end=\"375\"\u003e\u003cstrong data-start=\"247\" data-end=\"280\"\u003eKeep Vents \u0026amp; Registers Clear:\u003c\/strong\u003e Ensure supply and return vents are unobstructed for balanced airflow and consistent heating.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1pyg40g\" data-start=\"376\" data-end=\"555\"\u003e\n\u003cp data-start=\"378\" data-end=\"555\"\u003e\u003cstrong data-start=\"378\" data-end=\"413\"\u003eAnnual Professional Inspection:\u003c\/strong\u003e Have a technician check burners, heat exchanger, gas pressure, ignition system, and two-stage operation for safe and efficient performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ro2lgq\" data-start=\"556\" data-end=\"686\"\u003e\n\u003cp data-start=\"558\" data-end=\"686\"\u003e\u003cstrong data-start=\"558\" data-end=\"585\"\u003eInspect Venting System:\u003c\/strong\u003e Check flue pipes and exhaust vents for blockages or corrosion to ensure proper Low NOx combustion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"68kvu3\" data-start=\"687\" data-end=\"790\"\u003e\n\u003cp data-start=\"689\" data-end=\"790\"\u003e\u003cstrong data-start=\"689\" data-end=\"719\"\u003eMaintain Surrounding Area:\u003c\/strong\u003e Keep the furnace area free of dust, debris, and flammable materials.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1h0jkow\" data-start=\"791\" data-end=\"908\"\u003e\n\u003cp data-start=\"793\" data-end=\"908\"\u003e\u003cstrong data-start=\"793\" data-end=\"825\"\u003eVerify Thermostat Operation:\u003c\/strong\u003e Ensure the thermostat supports efficient two-stage heating and variable airflow.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"zw361i\" data-start=\"909\" data-end=\"1036\"\u003e\n\u003cp data-start=\"911\" data-end=\"1036\"\u003e\u003cstrong data-start=\"911\" data-end=\"941\"\u003eMonitor for Unusual Signs:\u003c\/strong\u003e Strange noises, odors, or inconsistent heating should prompt immediate professional service.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":46812776595593,"sku":"GD9T801005CX","price":1720.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/2443\/9177\/files\/80_downflow_frontleft-800x800_1_881ef132-41ac-4198-9853-93ffaef5e80a.webp?v=1779806436","url":"https:\/\/mobility-ready.com\/products\/goodman-100-000-btu-80-low-nox-gas-furnace-21-width-downflow-horizontal-two-stage-115v-r32","provider":"Supplies for Happy Tails","version":"1.0","type":"link"}