Description
AQUASUN 200L Non-Pressurized Solar Water Heater: The Reliable Energy Solution for Modern Families
Take a decisive step toward energy independence with the AQUASUN 200L Non-Pressurized Solar Water Heater. Engineered to balance high-performance thermal heating with long-term affordability, this 200-liter system is the ideal choice for medium-sized households of 4 to 6 people. By harnessing the sun’s free and abundant energy, AQUASUN helps you slash your monthly electricity bills by up to 75% while providing a consistent, sustainable hot water supply.
The AQUASUN non-pressurized series is designed for gravity-fed plumbing systems, making it remarkably simple to install and maintain. Because it operates on the natural Thermosiphon principle, there are no complex pumps or motorized parts to fail. Whether you are using treated municipal water or mineral-rich borehole water, this unit is built to endure, ensuring your family enjoys steaming hot water even during the coldest mornings.
The Advantage of Non-Pressurized Gravity Systems
The AQUASUN 200L Non-Pressurized System offers a distinct set of benefits for the practical homeowner:
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Superior Durability: Without the internal stress of constant high pressure, the tank and connections have a significantly longer operational lifespan.
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Cost-Efficiency: One of the most affordable solar solutions on the market, offering a faster return on investment (ROI) compared to pressurized models.
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Low Maintenance: A “passive” system with fewer fittings and valves, resulting in virtually zero maintenance costs over time.
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Quiet Operation: The natural convection process is completely silent, making it perfect for residential neighborhoods.
Technical Specifications & Performance
| Feature | Specification |
| Storage Capacity | 200 Liters (Ideal for 4–6 People) |
| System Type | Non-Pressurized (Gravity Flow) |
| Collector Type | 20 High-Efficiency Evacuated Vacuum Tubes |
| Inner Tank Material | Food-Grade SUS 304-2B Stainless Steel |
| Outer Tank Casing | Weatherproof Stucco Aluminium / Galvanized Steel |
| Insulation | 50mm–60mm High-Density Polyurethane Foam |
| Heat Retention | Up to 72–80 Hours |
| Frame Material | Reinforced Galvanized Steel (Rust-Proof) |
| Backup System | Integrated 1.5kW – 2.0kW Port (Optional) |
Product Highlights
1. High-Absorption Vacuum Tube Technology
The heart of the system lies in its 20 evacuated borosilicate glass tubes. Featuring a triple-layer coating (SS/CU/AL), these tubes absorb over 93% of solar radiation. The vacuum insulation ensures that heat is trapped inside the water circuit, allowing the system to reach temperatures of up to 95°C even in low-light conditions.
2. Advanced Heat-Lock Insulation
Heat retention is critical for early morning comfort. The AQUASUN 200L tank is insulated with high-density, CFC-free Polyurethane Foam (PUF). This industrial-grade insulation ensures that water heated during the day stays hot for up to 72–80 hours, protecting your supply against temperature drops during the night or rainy spells.
3. Corrosion-Resistant Stainless Steel Tank
Designed for longevity, the inner tank is crafted from SUS 304-2B food-grade stainless steel. This material is non-reactive and highly resistant to the scaling and corrosion often associated with borehole or “hard” water, ensuring your hot water remains hygienic and the tank remains leak-proof for decades.
4. Rugged, All-Weather Construction
The mounting frame and outer tank are designed to survive the harshest outdoor elements. Using reinforced galvanized steel with an anti-corrosive finish, the structure is stable enough to withstand high winds and intense UV radiation without degrading or rusting.
5. Intelligent Electric Backup Integration
For those rare periods of prolonged heavy cloud cover or extreme winter weather, the AQUASUN system is pre-fitted with a port for an optional electric backup heater. This thermostat-controlled element ensures that your family never has to compromise on comfort, providing 365-day reliability.
Primary Applications
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Residential Homes: Ideally sized for medium-sized bungalows or houses with 2–3 bathrooms.
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Borehole Water Areas: The stainless steel construction makes it a top choice for regions with hard water sources.
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Small Guest Houses & Airbnbs: Reducing operational overheads by providing free hot water to guests.
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Off-Grid Locations: A reliable solution for areas with limited or expensive grid electricity.





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