Also known as: 給湯器, 湯沸かし器, 瞬間湯沸かし器
An appliance installed in a house or other building that provides hot water for cleaning or bathing. Water heaters are connected directly to the plumbing and may serve an entire building or just a single faucet. This tag is used both for tankless water heaters and water heaters with storage tanks.
For small countertop appliances that dispense hot water, see Water Boiler.