Residential water heating accounts for 3% of all U.S. greenhouse gas emissions and 19% of home energy use, contributing to sky-high bills for many households. We started Cala with the goal to decarbonize home water heating, lower costs, and create a better experience for consumers.

So we turned to the source for a better solution: your hot water tank. For the past 130 years, water heaters have been designed to heat the tank when the water gets cold. But we believe it’s time for a change.

Cala maximizes the flexibility of your hot water tank by adjusting when, how quickly, and to what temperature your water is heated. Cala heats at the most efficient speed, generates more hot water before periods of high demand, uses electricity when your home solar system is operating or the electric grid is cleanest, and more - all without compromising on comfort.

By electrifying water heating and minimizing energy use, Cala significantly reduces greenhouse gas emissions today. And by synchronizing water heating with zero-carbon electricity as it continues to grow, Cala can make every bubble bath, shower, and hand wash a zero-emission comfort in the future.

We’re committed to a future where hot water is both a comfort and a step towards a cleaner, more sustainable planet. We hope you’ll join us.

Energy

Sustainability

Utilities

Water

Cala Systems

Cala Systems' headquarters in Somerville, United States

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