water heater

noun

: an apparatus for heating and usually storing hot water (as for domestic use)

Examples of water heater in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
This mini gadget is easy to set up (just insert a battery, and place it next to a water source like a sink, sump pump, water heater, or washing machine), and can last up to two years with normal use. Stephanie Osmanski, Better Homes & Gardens, 25 Aug. 2026 The top of the water heater and the floor under the mop sink each had five. David J. Neal, Miami Herald, 25 Aug. 2026 Health inspectors observed rodent droppings on the floor next to a hole near the water heater. Shambhavi Rimal, Fort Worth Star-Telegram, 23 Aug. 2026 The D’Carlos Restaurant is temporarily closed due to a fire erupting in the restaurant’s water heater room in the early hours of Tuesday morning. Julie Gallant, San Diego Union-Tribune, 21 Aug. 2026 See All Example Sentences for water heater

Word History

First Known Use

1824, in the meaning defined above

Time Traveler
The first known use of water heater was in 1824

Browse Nearby Words

Cite this Entry

“Water heater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/water%20heater. Accessed 29 Aug. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster