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
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Convert your existing electric geyser into a solar geyser without replacing the element or modifying pipes
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No pumps or moving parts — reducing installation time, maintenance, and risk of leaks
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Compatible with geysers from 100L to 300L, including 150L, 200L, and 250L units
Advanced MWS Smart Controller (with MPPT)
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Converts DC solar energy into modulated AC power using Maximum Power Point Tracking (MPPT)
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Prioritizes solar power first, with automatic AC backup when solar is insufficient
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Enables scheduled heating using grid power during low sunlight periods
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Works with your existing geyser element — no replacements needed
Smart Wi-Fi Control with Tuya/SmartLife
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Full app integration for remote temperature control, scheduling, and monitoring
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View real-time solar usage and energy savings
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Set timers and schedules from your phone
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AC Boost Mode provides instant hot water when needed
Premium Tier 1 Solar PV Panels
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Includes high-efficiency 400W–650W PV panels (depending on kit selection)
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Weatherproof with anti-reflective coatings for better performance in cloudy conditions
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Pre-terminated MC4 connectors for fast, secure installation
What's Included in the Kit
Core Components
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3x 545W–600W PV Solar Panels (excluded if “no panel” option selected)
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1x Geyserwise MWS Controller with Keypad Display, Thermostat and User Manual
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1x MWS Connection Cable
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1x 8-Way Dinrail Surface Mount DB
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1x 25A 2P DC Circuit Breaker
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1x 500V DC Surge Arrestor
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2x 6m Pre-Terminated Solarflex Cables (6mm² Red & Black)
Mounting Accessories with chosen selection.
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12x Anti-Theft Mounting Clips (excluded with "no panel" kits)
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Tiled Roof: 6x Universal Roof Tile Mounting Brackets
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IBR Roof: 6x Brackets with Rubber Seals & Screws
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Flat Roof: 6x 30–60° Tilt Brackets
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Corrugated Roof: 6x Dowel Screws
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Cliplock Roof: 8x Rib Clamps for 20/30mm profiles
Note: P2000 struts are not included due to courier limitations.
Technical Specifications
MWS SMART Controller
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Input Voltage: 120V – 350V DC
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Max Input Power: 4000W
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Output Voltage: 40V – 230V RMS
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Output Current: 20A Max
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AC Input: 230V / 50Hz
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Communication: RS 485
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Connectivity: Wi-Fi (Tuya/SmartLife)
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Protection: Thermal cut-out & dry-burn safety
PV Solar Panels
Geyser Compatibility & Safety
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Element Support: 1500W – 4000W
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Resistance Range: 12Ω – 27Ω
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Safety: Shuts off at 90°C
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Smart Features: Real-time energy tracking, timers, app control
What You'll Need (Not Included)
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1x External AC Isolator Switch (if not already installed)
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±4m of 2.5mm² Flat Twin & Earth Cable
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Extra solar cable if panels are mounted over 6m from controller
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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.
