All evaporative air conditioners use water to give the cooling effect. The amount varies with the size of the air conditioner, the amount of cooling selected, and the ambient conditions. Most evaporative air conditioners have a pre-programmed setting which regularly dumps the water.
The air conditioner is pre-set to regularly flush all the water out of the system and replace with new water. Some units have the special water saving feature which keeps the system clean and ensures you save precious water by minimising water loss through dumping.
This is achieved by constantly measuring the salinity of the water in the tank and dumping it only when needed, to ensure a clean and efficient operation. This means that you will not waste water like with other evaporative air conditioners. You can save over 9,000 litre compared to a basic bleed system, which will save you lots of money as well as water.