This startup wants to turn your water heater into a smart thermal battery

Unless your shower turns cold, you probably don’t give much thought to your water heater. But it’s a major energy user in the home, and unlike solar panels or heat pumps, it’s gotten relatively little attention as a piece of smart home tech. A new startup is trying to change that. The company, called Reservoir , designed a heat pump water heater that predicts when you’ll need hot water and heats up in advance, when electricity is cheapest. The upfront cost is comparable to other water heaters, b

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ethics.ai (12 August 2026), “This startup wants to turn your water heater into a smart thermal battery,” evidence record 18873, https://ethics.ai/record/18873 (originally published by Fast Company Tech).

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