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.