Royal Sun Solar Water Heater 30Tube 375L Premium Mat
Royal Sun Solar Water Heater 375L Premium Mat – 30 Tube (2025 Model)
Premium Stainless Steel Solar Water Heating System for Homes & Hotels
The Royal Sun Solar Water Heater 375L Premium Mat – 30 Tube (2025 Model) is a high-performance solar hot-water system designed for reliable daily use in Nepal. Built with premium matte stainless steel, 30 high-efficiency vacuum tubes, and advanced AL-N-AL selective coating, this model delivers fast heating and excellent heat retention—even during winter.
Ideal for large homes, hotels, hostels, rental buildings, and commercial properties, this 375-liter full stainless-steel solar water heater ensures long life, low maintenance, and maximum energy savings.
The integrated electric backup heater guarantees hot water during cloudy or cold days, making it a perfect all-weather solution.
Its durable Premium Mat Silver finish adds superior protection against corrosion and increases the system’s lifespan, while enhancing the look of your rooftop.
Technical Specifications
Capacity: 375 Liters
Solar Tubes: 30 high-efficiency vacuum glass tubes
Tube Length: 1899 mm
Outer Diameter: 58 mm | Inner Diameter: 47 mm
Glass Thickness: 1.6 mm
Absorptivity: ≥ 93% (high heat absorption)
Coating: AL-N-AL selective coating for maximum solar efficiency
Inner Tank: SUS 304-2B Stainless Steel (0.5 mm)
Outer Tank: Premium Mat Stainless Steel (0.4 mm)
Stand/Frame: Stainless Steel (1.2–1.5 mm)
Insulation: 50 mm high-density PU foam for long heat retention
Backup Heater: Integrated electric heating rod for all-weather use
Color: Silver Premium Mat
Delivery: Free inside Kathmandu Valley
Key Features & Benefits
Premium Mat Stainless-Steel Body
Rust-proof, durable, and stylish design suitable for Nepali climate.
30 High-Efficiency Vacuum Tubes
Achieves rapid heating with above 93% light absorptivity for maximum performance.
375-Liter Large Capacity
Perfect for 7–12 family members, hotels, lodges, hostels, and offices.
Low Energy Cost – High Savings
Runs on free solar energy, reducing electricity and LPG expenses.
Electric Backup Heater
Ensures hot water during winter, cloudy days, or at night.
Advanced Heat Retention
50 mm PU insulation keeps water hot for long durations, even in cold seasons.
Full Stainless-Steel Construction
Inner and outer tanks guarantee corrosion resistance and long operational life.
Environment-Friendly
Zero emissions, low maintenance, and long-term sustainable choice.
Free Delivery & Professional Installation
Available within Kathmandu Valley for a hassle-free experience.
Warranty & After-Sales Support
Total Warranty: 10 Years
5 Years Full Replacement Guarantee
5 Years Service Warranty
Supported by Solar Filter Nepal, ensuring expert installation, fast service, and reliable maintenance.
Safety & Maintenance Tips
Install safely away from children’s access.
Do not pour cold water into empty or heated tubes.
Always check temperature before bathing—water can go above 50°C.
Clean tubes and inspect fittings regularly for best performance.
Ensure proper water flow and tank pressure for longevity.
Why Buy the Royal Sun 375L Premium Mat – 2025 Model?
If you’re looking for a durable, energy-efficient, and high-capacity solar water heater, the Royal Sun 250L Premium Mat stands as one of the top choices in Nepal. With stainless-steel build, 20 high-absorption tubes, and excellent heating performance, it delivers long-term reliability and maximum value for money.
Perfect for anyone wanting uninterrupted hot water, lower electricity bills, and a stylish premium solar design.