Reservoir raises $8M to make water heaters that people — and the grid — will actually want | TechCrunch

Boston-based startup Reservoir has secured $8 million in seed funding to advance its modern, energy-efficient water heaters designed to benefit both homeowners and the electrical grid.

Led by Asymmetric Capital Partners, alongside investors such as Founder Collective and MCJ, the investment will support the company's regional expansion as it aims to scale its installations from roughly 100 units to approximately 1,000 by next year. Developed by former tech executives, Reservoir's appliance seeks to address the inefficiency and lack of intelligence found in traditional domestic water heaters, which historically account for a substantial portion of residential energy expenditures.

The startup's technology utilizes a built-in heat pump that is significantly more efficient than standard electric or natural gas models. By leveraging predictive algorithms, the device learns household hot water usage patterns to run heating cycles when energy costs are lowest, thereby reducing overall electricity consumption and alleviating grid strain. Beyond energy management, the premium versions feature leak-detection sensors, rapid hot water delivery, and integrated controls via a touchscreen and mobile app. To streamline customer acquisition and installation, Reservoir has established its own local plumbing operations, offering pricing that remains highly competitive with traditional alternatives after accounting for regional rebates and annual utility savings.