Traditionally, centralised hot water systems have been powered by a pump which keeps water flowing through a delivery pipethrough the boiler and back around through a return pipe. This means that the water is permanently circulating to make up for any thermal losses.
The HOTWAT system eliminates the need for such pipes and pumps by maintaining a constant temperature of the water pipes using self-regulating heating cables with semi-conductive matrixes. The power of these cables decreases as the temperature increases meaning there is no danger of overheating and these cables can be used with plastic piping.
The advantages of the Hotwat system are numerous and include: