Room SizeUnit SizeRecommended AirCon Units
Up to 15 sq.m2.5 kW (9000 BTU)2.5 kW Inverter (Energy Efficient)2.5 kW Non-Inverter
16 sq.m to 21 sq.m3.5 kW (12 000 BTU)3.5 kW Inverter (Energy Efficient)3.5 kW Non-Inverter 
22 sq.m to 30 sq.m5 kW (18 000 BTU)5 kW Inverter (Energy Efficient) 5 kW Non-Inverter
31 sq.m to 42 sq.m7 kW (24 000 BTU)7 kW Inverter (Energy Efficient)7 kW Non-Inverter


  • The information above is to be used as a guideline only.
  • If your space has large windows, high ceilings, high occupancy (ie: a lot of people in one room), or large electrical equipment, please consult an air conditioning specialist to select the right air conditioner that is suitable for your application.