{"product_id":"m0081903r","title":"M0081903R Nordyne 208-230v 3\/4hp 1050rpm Motor","description":"\u003ch1\u003eM0081903R Nordyne 208-230v 3\/4hp 1050rpm Motor\u003c\/h1\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe M0081903R is an OEM electronically commutated (ECM) blower motor—Q7 series—designed for Nordyne\/Intertherm\/Miller furnaces requiring high-efficiency variable-speed airflow. It delivers ¾ HP (0.75 HP) at 1050 RPM on 208–230 VAC single-phase power. Integrated speed-control electronics eliminate the need for external capacitors, and dual “end-cap” connectors allow easy selection of factory-set airflow curves. The motor drops straight into the OEM mounting bracket and accepts a standard ⅝″-to-½″ shaft adapter (not included).\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eOfficial Nordyne part number M0081903R\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePermanent-magnet ECM design for precise speed control and high efficiency\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eVoltage: 208–230 VAC, single-phase, 50\/60 Hz\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eHorsepower: ¾ HP; Speed: 1050 RPM at full-load\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eDual end-bell speed selectors (Q7 “E” cap for ECM interface)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eShaft diameter: ⅝″ (with optional ½″ adapter sleeve)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePlug-and-play mounting ears and keyed wiring harness\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFully enclosed, thermally protected, with anti-vibration mounts\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eReplaces legacy part M0081903 and fits any Nordyne, Intertherm, or Miller furnace originally equipped with the Q7 ECM blower motor:\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eTypical Models\/Series\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNordyne\u003c\/td\u003e\n\u003ctd\u003eM4ECM, M6ECM, M7ECM series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntertherm\u003c\/td\u003e\n\u003ctd\u003eMiller gas\/electric furnaces with ECM blower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMiller\u003c\/td\u003e\n\u003ctd\u003eECM-equipped downflow\/upflow furnaces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eAlways verify your furnace data-plate for motor code “Q7” or part number M0081903 before ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003eInstallation \u0026amp; Setup Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eConfirm Rotation \u0026amp; Orientation With the shaft pointing up (typical upflow), the motor spins clockwise. If installed shaft-down, rotation appears reversed—ensure ductwork and wheel orientation match.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eECM Controller Compatibility Requires an ECM-capable control board (e.g., Nordyne SYSTX or equivalent). Standard 24 VAC boards without ECM outputs will not operate this motor.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eWiring Harness Use the OEM three-wire connector; observe color-coded leads for line, neutral, and speed-control signal.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eShaft Adapter If your blower wheel bore is ½″, install a ½″ adapter sleeve over the ⅝″ shaft before mounting the wheel.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eVibration Isolation Verify anti-vibration grommets and mounting feet are in good condition to prevent noise and premature bearing wear.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":16079171125314,"sku":"M0081903R","price":596.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/OIP_7f187095-b2ea-45c9-a039-a85a6925c340.webp?v=1756926900","url":"https:\/\/hvacpartstore.com\/products\/m0081903r","provider":"HVACpartstore","version":"1.0","type":"link"}