I was Dispatched for a no cooling call for 2 RTU’s. I found 2 older Gas Package units. Neither unit was running. I had to replace the fuses for both units and perform wiring repair for both to get them working so I could evaluate them. Both units are currently working. Both units require significant cleaning and service. We will need to bring 300’ of hose and approximately 4 hours to complete the service. I will not know how much if any refrigerant R-22 will be needed until I finish the service and cleaning. I would guess around 3 or 4 pounds. Refrigerant will be an additional charge if needed. I received permission to perform the repairs for ASAP. The front System is a RTU. I completed repairs on this unit and it is operating as expected. At this time. The back System is a 5-Ton Split System. The Compressor is shorted. The A/C Condenser is an old R-22 203-230v Unit with an Electric Air Handler. The Customer would like an Estimate to replace the 5-ton System.