HVAC Repair - Upon arrival there was another company here that had just finished up looking at all 3 units, called office to inform them, my notes said unit not cooling, didn’t know which unit. Checked previous notes from Ryan and RTU has major issues with bad compressor and refrigerant loss. RTU 2 has low refrigerant recommend leak search and looks like the compressors have been replaced before. Also found gas turned off to unit. RTU 3 was cooling.