To heat pipes, walls, floors and interior fittings in a way that protects the materials, heaters should not be set to the highest temperature immediately. All pipes must be carefully checked for noise, unusual odours and water damage, both indoors and outdoors. To prevent mould growth, regular ventilation is advisable. Electrical appliances should also not be switched on all at once, but one after the other. In the event of malfunctions in electrical appliances, especially ventilation systems, instantaneous water heaters and air conditioning systems, as well as for the reprogramming of heating systems, specialist companies should be commissioned.