I have on many occassions. It is a very reliable and efficient chiller, more so than anything on the market. These machines are amazingly quiet, require practically no maintenance and are very tough...we had one operating on contaminated refrigerant for nearly 6 months (contractors fault, not manufacturer). We have about a dozen operating in about 7 buildings, air cooled machines and water cooled. they are also very quiet...can have a normal conversation standing right next to them.

What specific questions?