電でん気き温おん水すい器き

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Meanings

1

noun

electric water heater

A device that uses electricity to heat water, typically for household use.

electricity

気spirit, mind, air

温warm

水water

器utensil, vessel, receptacle

ガス温おん水すい器き
A gas water heater, as opposed to an electric one.
給きゅう湯とう器き
A more general term for a water heater, often used for gas or instantaneous types.

Compound of 電気 (electricity) + 温水 (warm water) + 器 (device).