Assertion: tankless water heater | /r/HasProperty | needed
Facets:
Source sentences:
text: Tankless water heaters heat water as it is needed, so you virtually never run out of hot water unless all appliances are drawing hot water at the same time.
text: Tankless water heaters, also known as on-demand water heaters because they don't usually store hot water, create hot water on demand, remaining inactive when there is no need.