Geyserwise Megawatt Saver (MWS)

Convert Your Electric Geyser into a Smart, Energy-Efficient Solar Water Heating System

The Geyserwise Megawatt Saver (MWS) allows you to convert any standard electric geyser into a solar-powered water heater without modifying plumbing or replacing the element. This version excludes solar panels, making it ideal for users who already have compatible photovoltaic (PV) panels.

Unlike traditional solar thermal geysers, which rely on complex water circulation systems, this plug-and-play PV-powered solution uses DC-to-AC conversion technology to power the existing geyser element, ensuring maximum efficiency and cost savings.

The system is powered by an intelligent MWS Controller, which converts DC solar energy to AC, allowing your geyser to function normally with solar power. It also integrates seamlessly with the Tuya/SmartLife Wi-Fi app, enabling remote control, scheduling, and monitoring for a smarter energy-efficient experience.

Key Features & Smart Functionality

✔ Solar Geyser Conversion – No Plumbing Required

• Upgrades any standard electric geyser into a solar-powered heating system without modifying water pipes.

• No pumps or moving parts, reducing maintenance and risks of leaks or frost damage.

• Eliminates the need for complex pipe installations required in traditional solar geysers.

• Compatible with 100L, 150L, 200L, 250L, and 300L geysers.

✔ Smart MWS Controller – Converts DC Solar Power to AC for Efficient Heating

• Uses Maximum Power Point Tracking (MPPT) technology to convert solar DC energy into modulated AC power, maximizing efficiency.

• Eliminates the need to replace the geyser element, unlike standard conversion kits.

• Automatically prioritizes solar power, switching to AC backup only when necessary.

• Seamless integration with AC power, ensuring uninterrupted hot water even in low-sunlight conditions.

• Smart AC Backup Feature – Allows grid power supply to heat the water at pre-set intervals configured by the user, ensuring hot water availability even on cloudy days.

✔ Full Wi-Fi Connectivity & Smart Control

• Tuya/SmartLife app integration for real-time monitoring, remote control, and smart automation.

• View water temperature, solar energy usage, and savings via smartphone.

• Set heating schedules and timers remotely for optimized energy consumption.

• AC Boost Mode for manual override, ensuring instant hot water when needed.

Technical Specifications

MWS SMART Controller (MPPT Solar Power Management System)

• Input Voltage Range: 125V DC – 350V DC

• Maximum Input Power: 4000W

• Solar Input Current: 15A Max

• MPPT Operating Range: 120V DC – 350V DC

• Solar Output Voltage: 40V – 230V RMS (Modulated Sine Wave)

• Solar Output Current: 20A Max

• AC Input Power: 230V AC / 50Hz

• Wi-Fi Connectivity: Tuya/SmartLife app (iOS & Android)

• Communication Protocol: RS 485 for display unit & smart control

• Safety Features: Built-in thermal cut-out & dry-burn protection

What's Included in the Kit

• 1x Geyserwise MWS Controller with Keypad Display

• 1x MWS Connection Cable
  

What You'll Need

• 1x External AC Isolator Switch (If not already installed)

• Approx. 4m of 2.5mm² Flat Twin & Earth Cable (If not already available)

• 4x Compatible Solar PV Panels (545W - 600W recommended)

Additional Notes

Other electrical tools may be required for installation. Please ensure that the installation instructions are followed carefully to guarantee both safety and correct installation.

Final Thoughts

The Geyserwise Megawatt Saver MWS SMART is the perfect solar-powered water heating solution for homeowners who already have solar panels and want to integrate them into an energy-efficient geyser system. With smart automation, AC backup, and Wi-Fi control, this system provides unmatched efficiency, automation, and energy savings.