Electric DC Living Fan 3 major features of DC motor fans! 1. Electricity bill saving... Power consumption is low and electricity bills tend to be low. 2. Quiet operation... Quieter than AC motor fans. 3. Multi-step air volume adjustment... Adjustable from 8 to 12 levels. In the Japanese market, Electric DC motor fans are becoming mainstream and popular. Most conventional fans were equipped with AC motors, but in recent years, devices with DC motors have come on the market. The following is an easy-to-understand comparison of the differences between DC motor type and AC motor type fans.