Maintenance completed, check and inspect air filters, client has a (IQair perfect 16 ) that has 4 mefia filter (2 inches each filter)according to the client they werw changed last year, unit has a u.v bulb that was replaced a year ago as well, drain line was clogg upon arrival, drain and flush condensation line and add drain pan treatment, cleaned conderser coil and evap coil, check electrical components and refrigerant pressure, all systems vital are good at this time