Understanding Daikin Model Numbers (e.g., RR125DXY1A4) For Daikin air conditioners like this standing floor unit, you can extract a lot of information just from the model number—especially from the outdoor unit model. Example: RR125DXY1A4 RR: Indicates the outdoor unit. 125: Refers to the cooling capacity in tenths of kW. For example: 140 = 14.0 kW / 6 HP 125 = 12.5 kW / 5 HP 100 = 10.0 kW / 4 HP 85 = 8.5 kW / 3.5 HP 71 = 7.1 kW / 3 HP D: Indicates the refrigerant type: L = R22 A = R32 D = R410A