Motor efficiency has received significantly more attention in the past decade, as a way to improve system efficiency, without the same level of complication as replacing a boiler or chiller plant, for example. Energy standards prescibe minimum efficiency requirements, based on their HP rating. Efficiency requirements tend to be more stringent, the larger the motor. The NovaTorque product line seeks to improve efficiency for motors at lower horsepower ratings, starting at 3 (93% efficiency) and 5 (92% efficiency). The current ASHRAE 90.1-2010 requirement for a 3 HP motor is 89.5%. Overall efficiency is also improved at lower operating speeds.