Toshiba Seiya Classic dual split air conditioner 12000+12000 BTU inverter A++ external unit 5.2 kWToshiba Seiya Classic dual split air conditioner 12000+12000 BTU inverter A++ external unit 5. 2 kW The air conditioner kit is equipped with the following indoor units: 2 x 12000 BTU Ideals for rooms from 25 to 40 sqm with an average height of 2. 7 m The Seiya Classic air conditioner from Toshiba is the updated version of the highly appreciated Seiya model from the Japanese company. With an excellent energy class A++ in cooling and A+ in heating,