We bought the other style from you that was single phase, the current one you offer is 3 phase. Does that heat up faster than the single phase one?Yes our SF-Mach-9000 is the same machine as HAAS. It is a great entry level shrink machine and been very reliable for us. Nice and powerful for the smaller diameters and the air cooling helps changeover time. We are having a promotion on ours until end of October.