Sldtel@yahoo.com Found the 20 year old system low on R22 refrigerant. Leak detector picked up small hits of a leak between the u-bends and indoor coil fins. Costumer declined the field supervisor visit and wanted to just charge up the system with R22, install ac leak freeze and invest into a yearly PSA (maintenance) plan. Tested the system in heat and cool upon departure. Additional refrigerant may be needed due to having a leak in the system, tech did explain that AC leak freeze is not a permanent repair. Blower wheel needs to be removed for proper cleaning during maintenance visit.