Upon arrival performed maintenance on the Lenix heating and air system. Opened up entire doors on condensing unit space washed off all coils and inside of air-conditioning unit. Tested all electrical components. Dusted off all electrical components. Refrigerant levels in range. Electrical fuses in range. Condenser fan motor in range. Replaced merv 16 filter. Cleaned down air handler, dusted off all electrical components. insulation is in very good condti9on same as ducting system. Verified system is operational before departure,.