The Smartest Way to Heat Your Water

Cala is the intelligent heat pump water heater that customizes water heating for each home, each day.

Better water heating by design.

For 130 years, water heaters have been designed to heat when the water in the tank is cold. Cala is different. It optimizes water heating based on your home's unique hot water needs - from morning showers to evening baths - while also integrating with solar, batteries, variable electricity pricing and more.

LEARNS YOUR HOME

Cala measures your home's hot water usage and takes in information relevant to you, such as energy prices, preferred hours of operation, solar system production, battery state of charge, weather, and more.

HEATS INTELLIGENTLY

Using what it learns, Cala adjusts when, how fast, and how hot it heats the water. It can heat slowly for higher efficiency or faster to deliver more hot water sooner. Cala can also heat water to a higher temperature for more capacity, while maintaining a consistent temperature at your taps.

MORE HOT WATER, LESS ENERGY

Cala delivers up to 50% more hot water during times of peak demand and keeps costs low by minimizing energy use, using energy when it's less expensive, coordinating with other home energy systems, and more.

LEARNS YOUR HOME

Cala measures your home's hot water usage and takes in information relevant to you, such as energy prices, preferred hours of operation, solar system production, battery state of charge, weather, and more.

HEATS INTELLIGENTLY

Using what it learns, Cala adjusts when, how fast, and how hot it heats the water. It can heat slowly for higher efficiency or faster to deliver more hot water sooner. Cala can also heat water to a higher temperature for more capacity, while maintaining a consistent temperature at your taps.

MORE HOT WATER, LESS ENERGY

Cala delivers up to 50% more hot water during times of peak demand and keeps costs low by minimizing energy use, using energy when it's less expensive, coordinating with other home energy systems, and more.

Comfort and control, simplified.

With the Cala app, you can see your hot water use, track energy savings, and set your preferences to customize water heating for your home. After installation, Cala tailors its heating to what matters most to you - whether that’s saving money, reducing carbon emissions, syncing with solar, or ensuring maximum comfort. Need extra hot water? Boost heat instantly. Heading out of town? Let Cala know so it saves energy while you’re away but ensures hot water is ready when you return.
See how it works

Why Cala is unlike any water heater you’ve had before.

Every feature is designed to 
deliver more comfort, save energy and money, and integrate 
seamlessly into your home.

Maximizes Your Hot Water

Cala delivers up to 50% more hot water by heating to a higher temperature and safely mixing it at the outlet.

Lowers Energy Bills

Cala heats at the right time, speed, and temperature to cut energy use—without sacrificing comfort.

Solar Syncing

Cala maximizes use of electricity from your home solar system, lowering your carbon footprint and, depending on your electricity rates, saving you money.

MORE WAYS CALA WORKS FOR YOU

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Avoid Peak Prices

Quiet Operation

Grid-Aware Heating

Live and
Historical Usage Data

Boost Mode

Lowers Your Carbon Emissions

Storm Preheating

Cala Community
Power

Remote Diagnostics

Multiple Users,
One System

Getting Cala into your home is simple.

Whether you’re working with a Cala Pro Contractor, handling installation yourself,
or just have questions, we’re here to guide you every step of the way.
Whether you’re working with a Cala Pro Contractor, handling installation yourself, or just have questions, we’re here to guide you every step of the way.
Get Started