Tankless water heat or on-demand water heater
Tankless hot water systems provide hot water on demand; heating water as it is need. This type of system improves efficiency by eliminates "stand-by" heat losses that occur with conventional storage tank heaters. Natural gas, electricity, or propane units are available. Since the tankless systems do not rely on water heated previously but heat water as it is need the can provide "endless hot water". The tankless system consists of a heating element, which can be wall mounted for spacing savings.