Brew12
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My guess is that it is a normal AC reluctance motor. The shape of the motor housing indicates more components than a typical AC pump starting capacitor. My guess is that they included a filter circuit inside the motor casing to flatten the shape of the sine wave. If done correctly this will reduce pump vibration and "hum". The capacitance in the filter circuit will push the power factor up toward unity.Agreed, PF’s a non-issue for residential applications. Induction motors don’t approach unity power factor though. Permanent magnet motors are better across the whole curve, and get close to unity but still a ways away. I think this might be a DOL PMM or brushless DC (more or less the same thing), but I can’t figure how they could do so with those price points and still maintain any margin.