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, didnâ€™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.