Privacy Policy

Effective Date: 04/14/2025

This Privacy Policy describes how Cala Systems, Inc. (“Cala Systems”, “we”, “us”, or “our”) collects, uses, and protects personal data through the Cala mobile application (the “App”), which pairs with the Cala Heat Pump Water Heater. By downloading or using the App, you agree to the collection and use of information in accordance with this Privacy Policy.

1. What Data We Collect and Why

To deliver the core functionality of the Cala system, the App collects data from the water heater and your device. This includes:

Water Heater Performance Data

Three internal temperature sensor readings
Number of hot water gallons used
Ambient temperature and humidity
Energy consumption
Control state (on/off)
Heating source selection
Installation environment (e.g., basement, crawlspace)
Previous water heater type (e.g., oil, gas)

This data helps us monitor system performance, optimize efficiency, and provide support. It is typically transmitted to the cloud approximately every 15 minutes.

Third-Party Service Integrations

Forecast.solar - https://forecast.solar/
Data shared: GPS location, solar panel specs (count, direction, angle, wattage)
WattTime - https://wattime.org
Data shared: GPS location for carbon intensity optimization

2. How We Use Your Data

We use the collected data to:

Ensure the Cala system operates effectively
Optimize energy use and reduce environmental impact
Provide diagnostic support and system updates
Improve your user experience
Integrate with solar and grid-based signals when applicable

3. Location and Account Permissions

The App may request permission to access your device’s location to enable solar forecasts, weather data, and grid syncing. You can disable this at any time in your device settings, though some features may no longer function.

You may also be asked to provide utility account details if connecting to your energy provider for optimization or rebates. This is optional and fully controlled by the user.

4. Data Retention and Access

We retain your data for as long as your account is active or as needed to provide you with the App’s services. You may request deletion of your data at any time by contacting us at support@calasystems.com. Please note that deleting data may impact your ability to use certain App features.

5. Children's Privacy

The Cala App is not intended for users under the age of 18. We do not knowingly collect personal data from children.

6. Updates to This Policy

We may update this App Privacy Policy from time to time. Updates will be posted within the App and on our website. Continued use of the App after changes take effect constitutes your agreement to the revised policy.

7. How to Contact Us

If you have any questions about this Privacy Policy, including any requests to exercise your legal rights, please contact us as follows:

By e-mail:         support@calasystems.com
By mail:            Support
                          Cala Systems, Inc.
                          444 Somerville Avenue
                          Somerville, MA 02143