Service Description Nafal Air Conditioning offers all solutions and proposals for implementing commercial and residential central air conditioning systems projects throughout the Kingdom, as we are one of the largest authorized distributors of international air conditioning brands. Central air conditioning is a relatively high-capacity air conditioning unit. This unit consists of one large piece that includes all the parts of the air conditioning system, including the evaporator, compressor, expansion valve, condenser, fans, and other components of the cooling circuit. Each air conditioning system (central air conditioning, concealed air conditioning , cassette air conditioning, and desert air conditioning ) has architectural and construction requirements that must be taken into account when choosing the appropriate air conditioning system. The central air conditioning unit is supplied with two duct lines. The air conditioning supply line is called (Supply) and is insulated.