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.
Start most household water heaters at 120°F for comfortable use and lower scald risk. — Timothy Dale, The Spruce, 10 Nov. 2026 The new statute also protects the installation of residential heat pump water heaters and heat pump HVAC systems. — Kelly G. Richardson, Oc Register, 7 Nov. 2026 Other exemptions include properties that don't have enough room or ventilation to install a compliant water heater, along with properties with electrical limitations, such as panels below 100 amps. — Tim Fang, CBS News, 5 Nov. 2026 In total, the program will make $40 million available to help people install heat pumps that cool and heat homes, electric stoves, water heaters and other appliances. — ABC News, 2 Nov. 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 14 Nov. 2026.

Love words? Need even more definitions?

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