водонагреватель означает в английский

geyser [geysers]▼(domestic water boiler)
noun
[UK: ˈɡiː.zə(r)] [US: ˈɡaɪ.zər]

hot water heater▼(apparatus in which water is heated for domestic hot water)
noun

water heater▼(appliance for heating water)
noun
[UK: ˈwɔː.tə(r) ˈhiː.tə(r)] [US: ˈwɒ.tər ˈhiː.tər]