Modern boilers are expected to withstand constantly increasing heating surface loads, increasing the risk of deposits, particularly of lime. This can reduce the boiler's performance and, at worst, lead to the failure of the boiler. Fillsoft softening units from Reflex are the right choice even for smaller systems. They are inexpensive, effective and also easy for lay users to operate. Unlike with full desalination, there is no danger to the system, even with improper operation, as the acid-base buffer system is retained.