{"product_id":"tempstar-1-2-hp-variable-speed-blower-motor-kit-for-t8mpt050b12b1-oem-ecm-motor-ships-today","title":"Tempstar 1\/2 HP Variable Speed Blower Motor Kit for T8MPT050B12B1 — OEM ECM Motor | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM 1\/2 HP variable-speed blower motor kit (part numbers 1173044 \/ 1175639) is the factory air-mover for the Tempstar T8MPT050B12B1 gas furnace. It is an ECM (electronically commutated motor) that ramps speed up and down to deliver quiet, efficient, constant-airflow operation across heating, cooling, and continuous-fan modes — a major comfort upgrade over fixed-speed PSC blowers. The kit includes the motor and module needed for a complete blower replacement. A failing variable-speed blower shows up as weak or no airflow, the blower hunting or surging, loud module relay clicking, or the furnace tripping on a high-limit because heat isn't being carried away. Replace the motor when the bearings are worn, the windings are open, or the ECM module has failed.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Numbers\u003c\/td\u003e\n\u003ctd\u003e1173044 \/ 1175639\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eVariable-Speed ECM Blower Motor Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar (ICP \/ Heil platform)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorsepower\u003c\/td\u003e\n\u003ctd\u003e1\/2 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive\u003c\/td\u003e\n\u003ctd\u003eVariable Speed \/ Constant Airflow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eFurnace Blower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eBuilt for the Tempstar T8MPT050B12B1 furnace and the shared ICP \/ Heil \/ Comfortmaker variable-speed blower platform. Both 1173044 and 1175639 are valid OEM kit numbers for this application — verify your model and serial on the rating plate before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the furnace switch and breaker and verify zero voltage with a multimeter; the ECM module can hold a charge, so wait several minutes before handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the blower compartment service panel and slide out the blower assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the motor wiring, module plugs, and blower-wheel position before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the 5-pin and power connectors, loosen the wheel set screw, remove the motor mount bolts, and separate the old motor from the housing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Fit the new motor to the blower wheel and housing, set the wheel spacing, torque the set screw, and reconnect all plugs per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, run heat, cool, and continuous-fan modes, and confirm the blower ramps smoothly to full airflow without surging.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWeak, no, or surging airflow from the supply registers\u003c\/li\u003e\n\u003cli\u003eBlower hunts, ramps erratically, or won't reach full speed\u003c\/li\u003e\n\u003cli\u003eLoud module relay clicking or a humming motor that won't start\u003c\/li\u003e\n\u003cli\u003eFurnace trips on high-limit from poor air movement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021728498035,"sku":"1173044-GEN","price":219.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048391065971,"sku":"1173044","price":285.94,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-blower-motor-ecm-1173044.jpg?v=1782957610","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-1-2-hp-variable-speed-blower-motor-kit-for-t8mpt050b12b1-oem-ecm-motor-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}