Roth has sold many mitsubishi mini split systems in both residential and commercial applications. Mitsubishi is the forerunner in current inverter driven mini-split technology. Roth offers them because among all the manufacturers of other mini split ductless systems, Mitsubishi stands out with very few warranty issues and the quietness and comfort provided cant be beat. May cost a little more up front, but they will save you much more in the long run.