For your home airconditioning needs, we recommend the midwall split in any brand like Samsung, Alliance or Midea. Crystal air solutions can supply top quality air conditioners in the inverter and non inverter (fixed speed) types. Midwall split inverter type units and non inverter type aircon units come in the range from 9000btu 12000btu, 18000btu, 24000btu, and 32000btu units covering an area from15m square to 60m square. The difference between an inverter and non inverter (fixed speed) is that the inverter type of air con unit can use up to 40% less electricity than the standard non inverter unit, if the unit is installed in the correct area specifications.