: an apparatus for heating and usually storing hot water (as for domestic use)
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Most of the roaches were found around a water heater and near a dairy cooler.—Camila Pedrosa, Sacbee.com, 17 Apr. 2026 Cala builds smart, predictive heat pump water heaters that can learn a household's habits and decide when to heat water based on electricity prices, solar production, and even grid forecasts.—Jacob Wycoff, CBS News, 17 Apr. 2026 Protect water heaters, especially older ones, with an insulated blanket.—Hali Smith, Idaho Statesman, 16 Apr. 2026 The company also notes the van will include a 60-L water supply, water heater and 80-L fridge/freezer.—New Atlas, 12 Apr. 2026 See All Example Sentences for water heater