Since 1993 we have been the specialists for efficient and hygienically perfect drinking water heating systems, as well as for the safe and economical operation of district heating systems. Our patented Frischwasserladesystem FWLS (fresh water charging system) complies with all DVGW specifications for drinking water hygiene and ensures efficient operation in all heating systems. With our Frischwasserladesystem FWLS we achieve the lowest possible return temperatures.