An intelligent heat pump water heater that thinks ahead so you don’t have to.

What is a heat pump water heater and why is it better?

Curious about water heater efficiency? Learn all about it here.
heat pump water heater
Heat pump water heaters are like a refrigerator running in reverse: they use electricity to move heat from the air into your tank. This is the most efficient way to heat your water.
Saves you money

Eligible for thousands of dollars in federal, state, and local rebates

Reduces emissions today, paving the way for zero emissions tomorrow

Free dehumidification and cooling
traditional water heater
Traditional water heaters convert fuel into heat, whether that’s electricity, natural gas, propane, or oil. This is a less efficient way to heat your water.
Saves you energy and money

Eligible for over a thousand dollars in federal, state, and local rebates and tax credits for most homes

Reduces emissions today, paving the way for zero emissions tomorrow
Uses more energy and costs more money

Higher greenhouse gas emissions

May impact the air quality in your home

Why Cala?

Today's heat pump water heaters are designed to heat when the water in the tank gets cold—and that's it. We've redesigned the water heater to optimize heating based on your home's unique needs and priorities.

Here's how it works:

STEP 1

Set your preferences

After installation, use the app to set your preferences. Cala will automatically tailor its heating based on what matters to you, whether that's saving money, reducing carbon emissions, synchronizing with solar, and more. And you can easily adjust your settings at any time.
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step 2

Cala learns your hot water habits.

Cala uses its flow sensor to learn your home's unique hot water usage patterns. As these patterns change throughout the day, week, and across seasons, Cala automatically adjusts to ensure optimal comfort and performance.
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step 3

Cala plans ahead to meet your needs.

Based on your hot water habits and preferences, Cala forecasts when to heat water, what temperature to heat to, and how to optimize the compressor’s performance. Cala continually updates its forecast so it’s always using the most recent information.
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step 4

Cala adjusts heating speed for optimal performance.

Cala is the first water heater that adjusts its heating speed based on future planning. Unlike other heat pump water heaters, Cala heats slowly when demand is low – improving efficiency – and faster when demand is high.
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step 5

Cala heats more hot water when it makes sense.

Cala delivers up to 50% more hot water by heating to a higher temperature and then mixing with colder water at the outlet to maintain a consistent delivery temperature to your home. This allows Cala to heat more water strategically—before peak demand periods, to avoid high electricity costs, when coordinating with your home solar system, and more.
Reserve your cala

Expect more from your water heater than just hot water.

Cala ensures you have ample hot water at regular times of peak usage.
Cala helps the electric grid use more intermittent renewable energy.
Cala reduces your utility bill.
Cala heats when your solar system is producing power.
Cala preheats a full tank of hot water before potential power outages.
We preheat a full tank of hot water before potential power outages.
Cala heats water when your local electricity is cleanest.
We preheat a full tank of hot water before potential power outages.
Cala avoids making noise and producing cool air at the times you decide.
We preheat a full tank of hot water before potential power outages.
FREQUENTLY ASKED QUESTIONS

Cala is coming in 2025.

Reserve your intelligent heat pump water heater today for water heating that is customized to your daily life and priorities.
reserve your cala

reservation

Cala is coming in 2025.

Pre-order yours to get feel-good warmth every day.