Today’s high efficient air conditioners (condensers fans and evaporators blowers) and furnaces use high efficient motors. The future and present motor of choice is called a electronically commutated motors (ECM motor). Most “green” units use these motors to get higher energy ratings known as The Seasonal Energy Efficiency Ratio (SEER). Prior to the 2006 13 SEER mandate, GE motors developed the ECM X13. X13 offers up to 33%% greater efficiency than traditional PSC motors and up to 200%% efficiency on constant fan mode. Many years have passed since the 2006 energy efficiency mandate, and many more ECM models have been developed.