Air conditioning maintenance has a good prospect. Summer is very profitable, and winter is the maintenance of central air conditioning. Luoyang electromechanical school has been teaching by hand.

The whole air conditioner consists of indoor unit, outdoor unit, connecting pipe and remote controller. The indoor unit includes evaporator, cross-flow fan, indoor fan and electric control part. The outdoor unit includes compressor, condenser, capillary, AC fan, outdoor fan and electrical components.