> Heat pumps, which heat and cool in one system, are another application in which the motor can save energy, ease installation, and reduce noise.

Assuming the efficiency gains are real, increasing the max COP ("efficiency") of heat pumps beyond their already astounding levels of near 5 (500%) would be a game changer for heating and cooling.

Even at quite cold temperatures (sub freezing), the latest heat pumps achieve a COP of 2.5 (250%), a level at which they beat the efficiency of gas furnaces even when powered by 40% efficient natural gas generated electricity.