The RHEEM ECM outdoor fan motor is designed to be the lowest cost energy-efficient solution for reversing fan blade rotation. This motor is engineered with corrosion resistant materials, making it ideal for commercial or residential applications in all weather conditions. The 51-102870-02 ECM fan motor is used with the Ruud HMPHR090-1 Heat Pump. It is to be used in place of the HR(208)065. The Motor has a voltage of 208/230-1, 60Hz, 0.55KW, 1 Phase. - The RHEEM 174350 -Ruud 51-102870-02 ECM Fan Motor is a replacement fan motor for the Ruud air conditioning model numbers listed below. The RHEEM 174350 ECM fan motor has the following features - The RHEEM ECM motor can go up to five years without needing any maintenance. The first two years, conventional maintenance should take place. Thereafter, the system will take care of itself by sending signals to tell you when routine maintenance is due. If un-serviced, the system will continue to run with no problems.-ECM Electronic Commutated Motor - The motor is located on the roof (top) of your air handler (square metal box). It should be accessible via an adjacent wall.2 Outlet, 3 Motor - This replacement motor from RUUD is a direct replacement for the original fan motor, not a universal replacement. - No matter what you do, there are moments when staying cool is the only option you have. - Motor - ECM (Outdoor)This RHEEM Motor - ECM (Outdoor) can be used with numerous RUUD unit models. - The RHEEM ECM outdoor fan motor is designed to be the lowest cost energy-efficient solution for reversing fan blade rotation. This motor is engineered with corrosion resistant materials, making it ideal for commercial or residential applications in all weather conditions. The 51-102870-02 ECM fan motor is used with the Ruud HMPHR090-1 Heat Pump. It is to be used in place of the HR(208)065. The Motor has a voltage of 208/230-1, 60Hz, 0.55KW, 1 Phase. - The RHEEM 174350 -Ruud 51-102870-02 ECM Fan Motor is a replacement fan motor for the Ruud air conditioning model numbers listed below. The RHEEM 174350 ECM fan motor has the following features - The RHEEM ECM motor can go up to five years without needing any maintenance. The first two years, conventional maintenance should take place. Thereafter, the system will take care of itself by sending signals to tell you when routine maintenance is due. If un-serviced, the system will continue to run with no problems.-ECM Electronic Commutated Motor - The motor is located on the roof (top) of your air handler (square metal box). It should be accessible via an adjacent wall.2 Outlet, 3 Motor - This replacement motor from RUUD is a direct replacement for the original fan motor, not a universal replacement. - No matter what you do, there are moments when staying cool is the only option you have.