Optimal technical insulation can provide sustainable support in keeping energy losses in a building or operational system low in the long term. Cost-saving measures to increase energy efficiency and system performance can be easily realized by insulating the entire piping network with Kaiflex. Thanks to the low thermal conductivity of up to λ ≤ 0.033 W/(m·K) and the thus very good thermal performance, the energy budget can already be sustainably optimized with a minimum insulation layer thickness, as the following example shows: an uninsulated DN 50 pipe has an annual energy consumption of 172.2 kWh per pipe meter. At a heat price of 0.24 € / kWh, this results in additional costs of 41.33 Euros per meter and per year. If, on the other hand, the pipe is covered with 19 mm of Kaiflex insulation, heat losses are reduced to 39 kWh and operating costs shrunken to 9.36 Euros per meter per year (assuming ambient temperature of 23 °C, media temperature 6 °C, rel. humidity 75 %, system hours 6,000). This means that 77 % of costs can be saved and the use of Kaiflex has already paid for itself after a short time.