A friend of mine has asked me to remove a small mini-split from a commercial building he has. The building opened in 1986, so I presume this is the age of the unit. The make is Heat Controller. It has an R-22 tag on it. There is a wall mounted evaporator about the size of a small microwave. It has a thermostat knob and four pushbuttons (off, fan, low cool, high cool) on the front. Air flows through the front mounted evap coil and out a louver on the top. I didn't get a good look at the condensing unit, but it is about the size of a medium sized microwave. There are quick connects on each end of the linesets.

Does anyone know anything about these units? I wonder what capacity it is? He says it won't run now, but that it was used in the last few years and worked fine.