Add Yahoo as a preferred source to see more of our stories on Google. Q: The last couple of times I’ve been in my pool, the water seems to be circulating poorly. Do I need to replace my pool pump ...

The way we control the speed of fan motors or pump motors has tremendously changed in the past two decades with the introduction of variable-frequency drives (VFDs), aka variable-frequency controllers ...

In hydronic heating and cooling systems, circulator pumps move water or refrigerant throughout a closed-loop system in order to transfer energy from the source to the point of need. While older ...

Engineers and designers commonly use electric motors to power hydraulic pumps. In some cases, the motor and pump are set up in a direct drive configuration. In others, they are connected using an ...