Where is there an increased risk of Legionella? For example, in a block of flats with a centralised hot water supply (electric storage/cylinder). In this case the water has a long way to go and the temperature drops. Here it is important that the electric cylinder is heated up regularly to more than 60 degrees and that the tenant flushes the water system, after a vacation or a long weekend, before taking a shower. Other examples are Hotels or holiday apartments, where there isn’t a regular use of hot water. The best solution is a water supply where you don’t have to worry. “Don’t worry” sounds good. What is your solution? If you use an instantaneous water heater, then you have nothing to worry about. It’s a decentralised water supply. The reason: They provide hot water on demand, heating the water as and when required. The water is heated directly at or near the draw-off point. So, you don’t have any problems with Legionella while taking a shower. You don’t need to flush your water system out anymore. It’s worth it: No Legionella & low energy costs.