Today I showed up for a complimentary evaluation awarded at a recent gun show the unit with the issue is a three head mini split heat pump unit that conditions the air for the out building which his son lives in as a courtesy throughout my Diagnostics I vacuumed the filters for the Mini Splits as well as surrounding areas so I could properly evaluate the Delta for each head and they were more or less all three reading the same about a four to five degrees temperature split I turned off the units and performed a leak detection everywhere I had access to I found nothing at the outdoor unit nothing at either one of the bedroom heads however the living room head has a refrigerant leak from within the head itself at this point it would appear to be an internal component that I am unable to access without uninstalling the unit as opposed to a connection that would be exterior of the unit within a few feet so I have provided options to the homeowner for leak detection and repair discussed opt