The heat exchanger is an integral part of the OptiClimate system and it is vital that it is kept clean in order to maintain the most efficient performance. If tap water is used with the system, it will naturally provide an adequate cleaning function. However, if you wish to use the system without tap water, we recommend that you occasionally use the OptiClimate Heat Exchanger Cleaner to clean the exchanger thoroughly and prevent dirt build up. OptiClimate water cooled systems are fast becoming the growers' choice to optimise plant health and productivity by providing beneficial growing conditions. They work by automatically establishing and maintaining growing room temperatures - effectively cooling, heating, dehumidifying, filtering and circulating air as needed. Flushing with OptiClimate Heat Exchange Cleaner will help to increase the efficiency of your water-cooler unit to ensure healthier, happier plants and higher yields for longer.