Preformed first prepaid maintenance services on new cool club membership, checked all filters and checked pressures checked amp draws and checked wiring connections. Cleaned coils and cleaned drain lines. Added mildew destroyer to drain lines for added drain line protection. Inspected units for growth, all units are clean. Tested float switches for split system. Checked duct work, both gas package unit duct systems would benefit from duct cleaning. Quoted 450.00 per unit. Both have one return and 9 supply vents to each unit. All three units are displaying a 19-21 degree delta-t 75-77 indoors and unit supply of 55-57 degrees. After full inspection and maintenance i find that all systematic components are working properly at this time.