sounds like most of what the others will do, just described differently.
And they always use a vacuum to suck the dust out in regular cleaning. how you think they will do the job?
From Aircon Guru
Cleaning of cover, clean air-filter, drain-pan and other parts
Cleaning of drainage pipe to prevent water leakage
Checking of air conditioner's operating conditions (operation of motor, blower fan, evaporator coil, fan coil, condensing coil condition)
Cleaning of air filter and covers
Checking of gas pressure
Checking of water leakage
Clearing of evaporating coil
From YongHe
Clean & check air filter, front panel & cover
Check deodorising and purifying filter
Clean & check indoor evaporator coil
Clean & check indoor drainage tray (Wall mount fancoil)
Vacuuming of drainage pan (Ceiling mount fancoil)
Vacuuming of drainage system
Brush & check outdoor condenser coil
Check fan bearing and lubricate (if necessary)
Check compressor suction and discharge pressure
Tightening of electrical contacts
Airconboy
Cleaning of cover, clean air-filter, drain-pan and other parts
Cleaning of drainage pipe to prevent water leakage
Checking of air conditioner's operating conditions (operation of motor, blower fan, evaporator coil, fan coil, condensing coil condition)
Cleaning of air filter and covers
Checking of gas pressure
Checking of water leakage
Clearing of evaporating coil