{"product_id":"goodman-3-5-ton-42-000-btu-multi-position-air-handler-with-ecm-motor-and-txv-r32","title":"Goodman - 3.5 Ton\/42,000 BTU Multi-Position Air Handler With ECM Motor and TXV - R32 - AMST42CU1300","description":"\u003ch2\u003e\u003cspan\u003eGoodman - 3.5 Ton\/42,000 BTU Multi-Position Air Handler With ECM Motor and TXV - R32 - AMST42CU1300\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe AMST is all about effective air distribution. It includes an all-aluminum evaporator coil and internal factory-installed valves for cooling and heat pump applications thermal expansion. These advanced components excel at ensuring that your home stays comfortable and your central system runs efficiently. The ECM fan motor is a huge step up from older models as it requires less electricity to operate and provides more consistent air circulation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eInternal factory-installed thermal expansion valves for cooling and heat pump applications\u003c\/li\u003e\n\u003cli\u003eDirect drive, multi-speed ECM blower motor\u003c\/li\u003e\n\u003cli\u003eAll-aluminum evaporator coil\u003c\/li\u003e\n\u003cli\u003eCoil mounting track for quick repositioning\u003c\/li\u003e\n\u003cli\u003eOptimized for use with R-32 refrigerant\u003c\/li\u003e\n\u003cli\u003eCabinet air leakage less than 2.0% at 1.0 inch Hâ‚‚O when tested in accordance with ASHRAE standard193\u003c\/li\u003e\n\u003cli\u003eCabinet air leakage less than 1.4% at 0.5 inch Hâ‚‚O when tested in accordance with ASHRAE standard193\u003c\/li\u003e\n\u003cli\u003eAHRI certified; ETL listed\u003c\/li\u003e\n\u003cli\u003eRigid SmartFrame cabinet\u003c\/li\u003e\n\u003cli\u003eHorizontal or vertical configuration capabilities\u003c\/li\u003e\n\u003cli\u003e21\" depth for easier attic access\u003c\/li\u003e\n\u003cli\u003eDecaBDE-free thermoplastic drain pan with secondary drain connections\u003c\/li\u003e\n\u003cli\u003eScrew-less sides and back helps to reduce con- densation when installed in humid locations\u003c\/li\u003e\n\u003cli\u003eFoil-faced insulation covers the internal casing to reduce cabinet condensation\u003c\/li\u003e\n\u003cli\u003eGalvanized, leather grain-embossed finish\u003c\/li\u003e\n\u003cli\u003eGlue-less cabinet insulation retention\u003c\/li\u003e\n\u003cli\u003eTool-less filter access\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-w22m{background-color:#ffffff;border-color:#000000;color:#000000;font-weight:bold;text-align:left;vertical-align:middle}\n\u003c\/style\u003e\n\u003ctable class=\"tg\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"tg-w22m\"\u003eModel Number(s)\u003c\/th\u003e\n\u003cth class=\"tg-cly1\"\u003eAMST42CU1300\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-w22m\"\u003eBrand\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eGoodman\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-w22m\"\u003eType\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eAir Conditioning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-w22m\"\u003eCategory\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eAir Handlers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-w22m\"\u003eTon\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e3.5 Ton\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-w22m\"\u003eVoltage\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e208\/230V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-w22m\"\u003eRefrigerant Type\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003eR-32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-w22m\"\u003eHeight (Inches)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e53 7\/16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-w22m\"\u003eWidth (Inches)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-w22m\"\u003eDepth (Inches)\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-w22m\"\u003eUPC #\u003c\/td\u003e\n\u003ctd class=\"tg-cly1\"\u003e633190042101\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\u003cul\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0794\/3104\/1346\/files\/Specsheet-Goodman-AMST-R32.pdf?v=1726644622\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eSpec Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0794\/3104\/1346\/files\/Instll.pdf?v=1726644641\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eInstallation Manual\u003c\/strong\u003e\u003c\/a\u003e\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=\"103tvrc\" data-start=\"27\" data-end=\"311\"\u003e\n\u003cp data-start=\"29\" data-end=\"311\"\u003e\u003cstrong data-start=\"29\" data-end=\"69\"\u003eModern R‑32 Ready Indoor Air Handler\u003c\/strong\u003e\u003cbr data-start=\"69\" data-end=\"72\"\u003eThe \u003cstrong data-start=\"78\" data-end=\"122\"\u003eGoodman AMST42CU1300 3.5 Ton Air Handler\u003c\/strong\u003e is built for \u003cstrong data-start=\"136\" data-end=\"156\" data-is-only-node=\"\"\u003eR‑32 refrigerant\u003c\/strong\u003e split systems, providing improved environmental compliance and efficiency when paired with a matched outdoor unit. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"tu8bto\" data-start=\"313\" data-end=\"616\"\u003e\n\u003cp data-start=\"315\" data-end=\"616\"\u003e\u003cstrong data-start=\"315\" data-end=\"361\"\u003ePrecise Cooling with Factory‑Installed TXV\u003c\/strong\u003e\u003cbr data-start=\"361\" data-end=\"364\"\u003eA \u003cstrong data-start=\"368\" data-end=\"415\"\u003ebuilt‑in thermostatic expansion valve (TXV)\u003c\/strong\u003e ensures \u003cstrong data-start=\"424\" data-end=\"457\" data-is-only-node=\"\"\u003eaccurate refrigerant metering\u003c\/strong\u003e and better coil performance—helping stabilize superheat, boost efficiency, and reduce load‑related temperature swings. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"lv9zk1\" data-start=\"618\" data-end=\"882\"\u003e\n\u003cp data-start=\"620\" data-end=\"882\"\u003e\u003cstrong data-start=\"620\" data-end=\"653\"\u003eEnergy‑Smart ECM Blower Motor\u003c\/strong\u003e\u003cbr data-start=\"653\" data-end=\"656\"\u003eThe \u003cstrong data-start=\"662\" data-end=\"688\"\u003emulti‑speed ECM blower\u003c\/strong\u003e adjusts airflow to match load demands, delivering \u003cstrong data-start=\"739\" data-end=\"804\" data-is-only-node=\"\"\u003equieter operation, smoother comfort, and lower electrical use\u003c\/strong\u003e compared with traditional PSC motors. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ke3kqj\" data-start=\"884\" data-end=\"1166\"\u003e\n\u003cp data-start=\"886\" data-end=\"1166\"\u003e\u003cstrong data-start=\"886\" data-end=\"926\"\u003eFlexible Multi‑Position Installation\u003c\/strong\u003e\u003cbr data-start=\"926\" data-end=\"929\"\u003eDesigned for \u003cstrong data-start=\"944\" data-end=\"993\"\u003eupflow, downflow, and horizontal orientations\u003c\/strong\u003e, this air handler adapts to most duct layouts—including attic, closet, or crawlspace installs—without complex cabinet modifications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"wic80n\" data-start=\"1168\" data-end=\"1433\"\u003e\n\u003cp data-start=\"1170\" data-end=\"1433\"\u003e\u003cstrong data-start=\"1170\" data-end=\"1214\"\u003eDurable, High‑Performance Coil \u0026amp; Cabinet\u003c\/strong\u003e\u003cbr data-start=\"1214\" data-end=\"1217\"\u003eThe \u003cstrong data-start=\"1223\" data-end=\"1255\"\u003eall‑aluminum evaporator coil\u003c\/strong\u003e maximizes heat transfer and resists corrosion, while the \u003cstrong data-start=\"1313\" data-end=\"1336\" data-is-only-node=\"\"\u003eSmartFrame cabinet\u003c\/strong\u003e delivers low air leakage and robust structural rigidity. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"17ydmzu\" data-start=\"1435\" data-end=\"1727\"\u003e\n\u003cp data-start=\"1437\" data-end=\"1727\"\u003e\u003cstrong data-start=\"1437\" data-end=\"1480\"\u003eCondensation Control \u0026amp; Easy Maintenance\u003c\/strong\u003e\u003cbr data-start=\"1480\" data-end=\"1483\"\u003eFeatures like a \u003cstrong data-start=\"1501\" data-end=\"1550\"\u003ethermoplastic drain pan with secondary drains\u003c\/strong\u003e, \u003cstrong data-start=\"1552\" data-end=\"1577\" data-is-only-node=\"\"\u003efoil‑faced insulation\u003c\/strong\u003e to reduce cabinet moisture, and \u003cstrong data-start=\"1610\" data-end=\"1637\"\u003etool‑less filter access\u003c\/strong\u003e help prevent water issues and simplify servicing. \u003cspan class=\"\" data-state=\"instant-open\" aria-describedby=\"radix-_r_h6_\"\u003e\u003c\/span\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=\"75\" data-end=\"378\"\u003e\u003cstrong data-start=\"75\" data-end=\"119\"\u003eQ1: What type of HVAC component is this?\u003c\/strong\u003e\u003cbr data-start=\"119\" data-end=\"122\"\u003eA: The \u003cstrong data-start=\"129\" data-end=\"153\"\u003eGoodman AMST42CU1300\u003c\/strong\u003e is a \u003cstrong data-start=\"159\" data-end=\"196\"\u003emulti‑position indoor air handler\u003c\/strong\u003e designed for \u003cstrong data-start=\"210\" data-end=\"246\"\u003e3.5 ton split‑system HVAC setups\u003c\/strong\u003e, providing conditioned air distribution and pairing with outdoor heat pumps or AC condensers. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"380\" data-end=\"643\"\u003e\u003cstrong data-start=\"380\" data-end=\"434\"\u003eQ2: What motor and airflow technology does it use?\u003c\/strong\u003e\u003cbr data-start=\"434\" data-end=\"437\"\u003eA: It features a \u003cstrong data-start=\"454\" data-end=\"508\"\u003edirect‑drive, multi‑speed 9‑speed ECM blower motor\u003c\/strong\u003e, which delivers smooth, efficient airflow and quieter operation compared to single‑speed motors. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"645\" data-end=\"865\"\u003e\u003cstrong data-start=\"645\" data-end=\"671\"\u003eQ3: Is a TXV included?\u003c\/strong\u003e\u003cbr data-start=\"671\" data-end=\"674\"\u003eA: Yes — it includes \u003cstrong data-start=\"695\" data-end=\"748\"\u003efactory‑installed thermal expansion valves (TXVs)\u003c\/strong\u003e for efficient refrigerant metering in both cooling and heat pump applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"867\" data-end=\"1076\"\u003e\u003cstrong data-start=\"867\" data-end=\"919\"\u003eQ4: What refrigerant compatibility does it have?\u003c\/strong\u003e\u003cbr data-start=\"919\" data-end=\"922\"\u003eA: This air handler is optimized for \u003cstrong data-start=\"959\" data-end=\"979\"\u003eR‑32 refrigerant\u003c\/strong\u003e, supporting modern, environmentally friendly HVAC systems. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1078\" data-end=\"1345\"\u003e\u003cstrong data-start=\"1078\" data-end=\"1131\"\u003eQ5: What installation orientations are supported?\u003c\/strong\u003e\u003cbr data-start=\"1131\" data-end=\"1134\"\u003eA: The multi‑position design allows \u003cstrong data-start=\"1170\" data-end=\"1241\"\u003eupflow, downflow, left‑horizontal, or right‑horizontal installation\u003c\/strong\u003e, offering flexible placement for various ductwork configurations. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1347\" data-end=\"1536\"\u003e\u003cstrong data-start=\"1347\" data-end=\"1385\"\u003eQ6: What type of coil does it use?\u003c\/strong\u003e\u003cbr data-start=\"1385\" data-end=\"1388\"\u003eA: It uses an \u003cstrong data-start=\"1402\" data-end=\"1445\"\u003eall‑aluminum evaporator (AlumaFin) coil\u003c\/strong\u003e for superior heat transfer and corrosion resistance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1538\" data-end=\"1886\"\u003e\u003cstrong data-start=\"1538\" data-end=\"1595\"\u003eQ7: What durability and build features does it offer?\u003c\/strong\u003e\u003cbr data-start=\"1595\" data-end=\"1598\"\u003eA: The unit has a \u003cstrong data-start=\"1616\" data-end=\"1801\"\u003erigid SmartFrame cabinet with foil‑faced insulation, low‑leakage construction (\u0026lt;2% per ASHRAE standards), thermoplastic drain pan with secondary drains, and tool‑less filter access\u003c\/strong\u003e for easy maintenance and reliable performance.\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=\"t28o1a\" data-start=\"122\" data-end=\"402\"\u003e\n\u003cp data-start=\"124\" data-end=\"402\"\u003e\u003cstrong data-start=\"124\" data-end=\"169\"\u003eReplace or Clean the Air Filter Regularly\u003c\/strong\u003e – Check the indoor air filter every \u003cstrong data-start=\"206\" data-end=\"220\"\u003e1–3 months\u003c\/strong\u003e and replace or clean it to maintain proper airflow and keep the evaporator coil clean. A dirty filter restricts airflow and reduces efficiency. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"4xdmsq\" data-start=\"404\" data-end=\"638\"\u003e\n\u003cp data-start=\"406\" data-end=\"638\"\u003e\u003cstrong data-start=\"406\" data-end=\"454\"\u003eInspect \u0026amp; Clean the Evaporator Coil Annually\u003c\/strong\u003e – Dust and debris on the all‑aluminum coil reduce heat transfer. Have a professional clean the coil each year to preserve comfort and efficiency. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"rvigkb\" data-start=\"640\" data-end=\"844\"\u003e\n\u003cp data-start=\"642\" data-end=\"844\"\u003e\u003cstrong data-start=\"642\" data-end=\"674\"\u003eCheck Condensate Drain \u0026amp; Pan\u003c\/strong\u003e – Ensure the thermoplastic drain pan and condensate line are clear to prevent water buildup, microbial growth, and overflow issues. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"nok9k4\" data-start=\"846\" data-end=\"1070\"\u003e\n\u003cp data-start=\"848\" data-end=\"1070\"\u003e\u003cstrong data-start=\"848\" data-end=\"884\"\u003eMonitor Blower Motor Performance\u003c\/strong\u003e – The multi‑speed ECM motor delivers efficient airflow; annually inspect for proper operation and listen for unusual noises that could signal wear. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"xe38mi\" data-start=\"1072\" data-end=\"1318\"\u003e\n\u003cp data-start=\"1074\" data-end=\"1318\"\u003e\u003cstrong data-start=\"1074\" data-end=\"1118\"\u003eVerify Refrigerant Lines \u0026amp; TXV Operation\u003c\/strong\u003e – Make sure R‑32 refrigerant lines are leak‑free and insulated; the factory‑installed TXV should be checked during professional maintenance for correct metering. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"st5647\" data-start=\"1320\" data-end=\"1533\"\u003e\n\u003cp data-start=\"1322\" data-end=\"1533\"\u003e\u003cstrong data-start=\"1322\" data-end=\"1363\"\u003eMaintain Unit Clearance \u0026amp; Orientation\u003c\/strong\u003e – Keep surrounding area clear and ensure unit orientation (upflow\/downflow\/horizontal) is unobstructed so airflow isn’t restricted. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"18vpgv5\" data-start=\"1535\" data-end=\"1795\"\u003e\n\u003cp data-start=\"1537\" data-end=\"1795\"\u003e\u003cstrong data-start=\"1537\" data-end=\"1573\"\u003eAnnual Professional HVAC Service\u003c\/strong\u003e – A licensed technician should inspect electrical connections, check refrigerant charge, clean coils, and test drain lines each year to maintain peak performance and system longevity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":43533439008842,"sku":"AMST42CU1300","price":1335.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/2387\/2074\/files\/download_1_20d5f0fd-66a4-43da-b27c-9786bc692590.webp?v=1776875857","url":"https:\/\/wen0d6-q0.myshopify.com\/products\/goodman-3-5-ton-42-000-btu-multi-position-air-handler-with-ecm-motor-and-txv-r32","provider":"Power Gear for Every Journey","version":"1.0","type":"link"}