Geyserwise Megawatt Saver (MWS) 100L to 200L SMART Solar Geyser Conversion Kit

Geyserwise Megawatt Saver (MWS) 100L 200L SMART Solar Geyser Conversion Kit

Convert Your Existing Electric Geyser into a Smart Solar Heating System

Upgrade your home with the Geyserwise MWS SMART Solar Conversion Kit a revolutionary, Wi-Fi-enabled system that transforms your standard electric geyser (up to 200L) into a solar-powered, energy-efficient water heating solution.

This next-generation plug-and-play kit eliminates the need for complicated plumbing, pumps, or element replacements. Instead, it uses photovoltaic (PV) solar panels to generate electricity and directly power your geyser with smart automation and full remote control via the Tuya or SmartLife app.

Why Choose the Geyserwise MWS Solar Conversion Kit?

Solar Heating with Zero Plumbing Changes

• Convert your existing electric geyser into a solar geyser without replacing the element or modifying pipes

• No pumps or moving parts reducing installation time, maintenance, and risk of leaks

• Compatible with geysers from 100L to 300L, including 150L, 200L, and 250L units

Advanced MWS Smart Controller (with MPPT)

• Converts DC solar energy into modulated AC power using Maximum Power Point Tracking (MPPT)

• Prioritizes solar power first, with automatic AC backup when solar is insufficient

• Enables scheduled heating using grid power during low sunlight periods

• Works with your existing geyser element no replacements needed

Smart Wi-Fi Control with Tuya/SmartLife

• Full app integration for remote temperature control, scheduling, and monitoring

• View real-time solar usage and energy savings

• Set timers and schedules from your phone

• AC Boost Mode provides instant hot water when needed

Premium Tier 1 Solar PV Panels

• Includes high-efficiency 400W650W PV panels (depending on kit selection)

• Weatherproof with anti-reflective coatings for better performance in cloudy conditions

• Pre-terminated MC4 connectors for fast, secure installation

What's Included in the Kit

Core Components

• 3x 545W600W PV Solar Panels (excluded if "no panel" option selected)

• 1x Geyserwise MWS Controller with Keypad Display, Thermostat and User Manual

• 1x MWS Connection Cable

• 1x 8-Way Dinrail Surface Mount DB

• 1x 25A 2P DC Circuit Breaker

• 1x 500V DC Surge Arrestor

• 2x 6m Pre-Terminated Solarflex Cables (6mm² Red & Black)

Mounting Accessories with chosen selection.

• 12x Anti-Theft Mounting Clips (excluded with "no panel" kits)

• Tiled Roof: 6x Universal Roof Tile Mounting Brackets

• IBR Roof: 6x Brackets with Rubber Seals & Screws

• Flat Roof: 6x 3060° Tilt Brackets

• Corrugated Roof: 6x Dowel Screws

• Cliplock Roof: 8x Rib Clamps for 20/30mm profiles

Note: P2000 struts are not included due to courier limitations. 

Technical Specifications

MWS SMART Controller

• Input Voltage: 120V 350V DC

• Max Input Power: 4000W

• Output Voltage: 40V 230V RMS

• Output Current: 20A Max

• AC Input: 230V / 50Hz

• Communication: RS 485

• Connectivity: Wi-Fi (Tuya/SmartLife)

• Protection: Thermal cut-out & dry-burn safety

PV Solar Panels

• Power Rating: 400W 650W

• Vmp: 41.79V 43.9V

• Voc: 49.91V 53.0V

• Imp: 11.01A 13.68A

• Isc: 11.50A 14.18A

• Mounting: Roof brackets included (based on option selected)

Geyser Compatibility & Safety

• Element Support: 1500W 4000W

• Resistance Range: 12 27

• Safety: Shuts off at 90°C

• Smart Features: Real-time energy tracking, timers, app control

What You'll Need (Not Included)

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

• ±4m of 2.5mm² Flat Twin & Earth Cable

• Extra solar cable if panels are mounted over 6m from controller

• Standard electrical tools for installation

Final Thoughts

The Geyserwise Megawatt Saver SMART Kit delivers a powerful combination of cost savings, convenience, and sustainability. It's the perfect solution for South Africans looking to reduce electricity bills and become less reliant on the grid without sacrificing hot water comfort.