Rising energy prices and the need to reduce CO2 emissions are making waste heat a valuable resource. Allenspach Apparatebau in Hermetschwil builds custom heat recovery systems that are able to efficiently extract and use the heat from the exhaust gases produced by industrial processes. The materials used must be chosen specific to the plant in question, as they have to be able to withstand, for instance, acidic or alkaline solutions formed during the condensation phase. Ferroline C12 X2, Ferroline X4, Inoxline C2, forming gas and argon cylinder gases supplied by Messer, contribute to the high quality of the Allenspach plants. They are used during the manufacture and assembly of the heat recovery systems and other high-temperature process equipment.