Cooling safety inspection and maintenance. Turned the thermostat from Heating to cooling then dropped the temperature then verified cooling operation, went in the attic to flush the condensate drain line and to inspect bathe air handler, inspected the drain line and flushed with 1 gallon of water , inspected the evaporator coil and the blower assembly, advised the client to have us install an uv light to keep his coil clean. Inspected the basement system and replaced the filter. Cleaned both coils and checked operation, the water heater is in a poor condition advised the client that the water heater cab bust any time or day soon. The client wants to have his solutions on a new Hvac system and water heater. Tune up complete.