Assertion: water heater's cost | /r/HasProperty | due
Facets:
value: to the time of use
type: CAUSE
Source sentences:
text: The lower costs with electric showers compared to the higher costs with boilers is due to the time of use: an electric shower uses energy only while the water flows, while a boiler works many times a day to keep a quantity of standing water hot for use throughout the day and night.