# Cala Systems

> Cala makes the world's first intelligent heat pump water heater. Cala Predictive Intelligence™ uses sensors and data about weather, solar production, electricity prices, and household hot water use to predict each home's hot water needs and determine when, how fast, and to what temperature water should be heated. Cala delivers up to 50% more hot water while using up to 25% less energy than typical heat pump water heaters.

## Product
- [Cala Systems](https://www.calasystems.com/): Official homepage and overview of Cala's intelligent heat pump water heater.
- [How It Works](https://www.calasystems.com/how-it-works): How Cala Predictive Intelligence™ uses sensors, algorithms, a variable-speed compressor, and mixing valve to anticipate hot water demand and coordinate heating with solar production, time-of-use electricity pricing, and grid emissions.
- [Tech & Specs](https://www.calasystems.com/tech-specs): Full specs for the Cala RDH6524M1 — 65-gallon tank, UEF 3.76, 78-gallon first-hour capacity, 240V/30A electrical service, 48-52 dB, WiFi/Bluetooth app control.
- [Costs & Savings](https://www.calasystems.com/costs-and-savings): State-based savings calculator comparing Cala to electric, propane, oil, and gas water heaters; rebates up to $1,750; free savings estimate.
- [Rebates & Purchase](https://shop.calasystems.com/products/cala-heat-pump-water-heater?opener=yes): Check available rebates and incentives based on location, utility, and household information; view current pricing, product details, and purchase options.
- [Does Cala Fit? (quiz)](https://www.calasystems.com/quiz): Short quiz to check whether a home qualifies for a Cala installation.
- [FAQ](https://www.calasystems.com/faq): Installation requirements, electrical needs, rebates/incentives, warranty, purchasing, and contractor questions.
- [Solar Integration](https://www.calasystems.com/solar): How Cala syncs water heating with solar production to maximize on-site solar use, protect savings against net-metering changes, and lower carbon footprint.
- [Buy Cala Direct](https://shop.calasystems.com): Purchase a Cala heat pump water heater directly from Cala for homeowner or DIY installation.
- [Find a Cala Pro Contractor](https://www.calasystems.com/find-a-pro): Check Cala Pro availability near you.
- [Warranty](https://www.calasystems.com/warranty): Warranty terms and coverage.

## Product Technology & Integrations
- [Cala's Intelligent Heat Pump Water Heater Is Now Certified](https://www.calasystems.com/news/calas-intelligent-heat-pump-water-heater-is-now-certified): Certification details for Cala's intelligent heat pump water heater, including ENERGY STAR qualification and safety certifications.
- [Cala's Thermal Platform](https://www.calasystems.com/news/how-calas-thermal-platform-is-orchestrating-the-future-of-home-energy): How Cala coordinates water heating, recirculation, home energy systems, and the electric grid to improve hot water performance and reduce energy costs and carbon emissions.
- [Cala + Home Assistant](https://www.calasystems.com/news/cala-home-assistant-water-heating-that-responds-to-your-home): Cala's local, bidirectional Home Assistant integration, enabling the water heater to respond to information from solar, batteries, and other connected home systems.

## For Professionals
- [Become an Installer](https://www.calasystems.com/become-an-installer): The Cala Pro partner program for contractors — direct purchasing, extended labor warranty, technical docs, and sales support.

## Company
- [Mission & Careers](https://www.calasystems.com/mission-and-careers): Company mission ("decarbonize every tap") and open roles.
- [Blog](https://www.calasystems.com/blog): Articles on heat pump water heater technology, company news, and team updates.

## Legal
- [Terms of Sale](https://www.calasystems.com/terms-of-sale): Purchase terms and conditions.
- [Privacy Policy](https://www.calasystems.com/privacy-policy): Site and data privacy policy.