Air-conditioning is responsible for approximately 20% of the total annual electricity consumption in a country like the USA. The introduction of inverter drive technology in air-conditioning and heat pump systems presents an opportunity for significant energy savings due to efficient part-load operation, and also helps improve power quality of the grid. Power factor is an important measure of how hard the power utility must work to deliver electricity. Increasing the power factor of installations can directly impact the quality of power supply. For electric utilities, this equates to fewer losses and improved reliability of service. For building- and homeowners, this means more efficient equipment with the possibility of local utility, state and/or federal incentive programs. Power factor is the combination of the displacement power factor (displacement of active and reactive power) and the distortion power factor (distortion of the electrical power due to harmonics).Power factor close to 1 means:
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