Geyserwise Megawatt Saver (MWS) 250L – 300L SMART Solar Geyser Conversion Kit
Convert Your Large Electric Geyser into a Smart, Solar-Powered System
Designed for larger households, the Geyserwise MWS SMART Solar Conversion Kit is a high-performance, Wi-Fi-enabled solution that transforms your 250L to 300L electric geyser into an intelligent solar water heating system.
This advanced plug-and-play kit uses photovoltaic (PV) solar panels to generate electricity and power your geyser directly — without the need for plumbing alterations, pumps, or element replacements. Enjoy complete control and energy optimization via the Tuya or SmartLife mobile app.
Why Choose the MWS 250L–300L Solar Conversion Kit?
No Plumbing Changes – Just Plug In and Save
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Converts standard electric geysers into solar-powered systems without pipe modifications
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No pumps or moving parts — reducing installation time, complexity, and maintenance
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Optimized for 250L and 300L geysers, and backward compatible with 200L systems
Smart MWS Controller with MPPT Efficiency
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Converts DC solar power into modulated AC using Maximum Power Point Tracking (MPPT)
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Automatically uses solar energy first, with seamless switch to grid power if needed
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Maintains hot water availability during cloudy or rainy days via AC backup
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Works with existing geyser elements — no need to replace or retrofit
Full Smart Wi-Fi Control (Tuya/SmartLife Enabled)
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Remote monitoring and control via smartphone app
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View live water temperature, energy usage, and system performance
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Set timers, create schedules, and enable AC Boost Mode when instant hot water is needed
Premium PV Panels for Larger Capacity Geysers
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Includes 400W–650W Tier 1 solar panels (quantity based on kit selection)
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Anti-reflective, weather-resistant coatings for maximum performance
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MC4 connectors for fast, secure installation
What’s Included in the Kit
Core Components
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4x 545W–600W PV Solar Panels (excluded if “no panel” option selected)
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1x Geyserwise MWS Controller with Digital Keypad, 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 6mm² Solarflex Cables (Pre-Terminated, Red & Black)
Mounting Accessories (based on roof type selected)
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16x Anti-Theft Mounting Clips (excluded if “no panel” option selected)
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Tiled Roof: 8x Universal Roof Tile Mounting Brackets
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IBR Roof: 8x Brackets with Rubber Seals & Screws
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Flat Roof: 8x 30–60° Tilt Brackets
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Corrugated Roof: 8x Dowel Screws
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Cliplock Roof: 10x Rib Clamps (20/30mm)
Note: P2000 struts are not included due to courier risk. Tile brackets, hanger bolts, and other specialized mountings are sold separately to match specific roof types.
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 (Modulated Sine Wave)
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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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Wi-Fi Enabled: Tuya / SmartLife App
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Built-in Safety: Thermal cut-out, dry-burn protection
PV Solar Panels
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Power Range: 400W – 650W
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Voltage at Maximum Power (Vmp): 41.79V – 43.9V
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Open Circuit Voltage (Voc): 49.91V – 53.0V
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Current at Maximum Power (Imp): 11.01A – 13.68A
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Short Circuit Current (Isc): 11.50A – 14.18A
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Mounting Type: Roof brackets (per kit selection)
Geyser Compatibility & Safety
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Compatible Elements: 1500W – 4000W
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Resistance Range: 12Ω – 27Ω
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Safety Cut-Off: Shuts off at 90°C
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Smart Control: Real-time tracking, programmable schedules, energy stats
What You’ll Need (Not Included)
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1x External AC Isolator Switch (if not yet installed)
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Approx. 4m of 2.5mm² Flat Twin & Earth Cable
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Additional solar cable if distance from panels to controller exceeds 6m
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Standard electrical tools for professional installation
Final Thoughts
The Geyserwise Megawatt Saver (MWS) 250L–300L Kit is the ideal solution for larger households or high-volume hot water users who want to slash electricity costs and enjoy smart control. With minimal installation effort, advanced solar efficiency, and full app integration, it’s the future of water heating — available today.
