Emerging research proposes integrating silicon-carbide MOSFETs into the single-phase dual-capacitor induction motor control board, enabling 99 % inverter efficiency and silent switching above 20 kHz. Sensorless vector algorithms estimate rotor flux using only dc-bus current, eliminating costly encoders. Cloud-connected meters stream vibration and temperature data, predicting capacitor end-of-life within 10-hour accuracy. Additive-manufactured aluminum rotors with internal cooling fins reduce thermal resistance by 25 %. Policy trends in Europe may soon mandate IE4 efficiency for all 1–5 kW single-phase motors, accelerating adoption of the single-phase dual-capacitor induction motor across residential heat-pump markets.