Description
AQUASUN 150L Non-Pressurized Solar Water Heater: Compact Efficiency & Indian Engineering
Take control of your monthly energy costs with the AQUASUN 150L Non-Pressurized Solar Water Heater. Proudly made in India, this system is specifically designed for small families (2–4 people), apartments, and cottages. By combining high-performance Indian manufacturing with advanced solar thermal technology, AQUASUN delivers a reliable supply of steaming hot water at a fraction of the cost of electric geysers.
The 150-liter series is the “smart choice” for those with gravity-fed plumbing systems. Because it operates on the natural Thermosiphon principle, it requires no expensive pumps or complex electronic controllers to function. It is a set-it-and-forget-it solution that turns your roof into a private, zero-emission power plant.
The Power of Indian Manufacturing
AQUASUN units made in India are renowned for their ruggedness and adaptability to diverse water conditions.
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Hard Water Resilience: Specifically built to handle higher mineral content (borehole water) without the rapid scaling found in low-quality imports.
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High-Grade Materials: Features thicker gauge stainless steel and superior welding techniques developed for long-term durability in tropical climates.
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Cost-Efficiency: Offers one of the fastest returns on investment (ROI) in the solar market, typically paying for itself in under 18–24 months.
Technical Specifications & Performance
| Feature | Specification |
| Storage Capacity | 150 Liters (Ideal for 2–4 People) |
| System Type | Non-Pressurized (Gravity Flow) |
| Collector Type | 15 High-Efficiency Evacuated Vacuum Tubes |
| Inner Tank Material | Food-Grade SUS 304-2B Stainless Steel |
| Outer Tank Material | Weatherproof Stucco Aluminium / Galvanized Steel |
| Insulation | 50mm High-Density Polyurethane Foam (PUF) |
| Heat Retention | Up to 48–72 Hours |
| Electrical Backup | Integrated 1.5kW – 2.0kW Port (Optional) |
| Frame Material | Reinforced Galvanized Steel (Anti-Corrosive) |
Product Highlights
1. High-Absorption Vacuum Tube Collectors
The AQUASUN 150L features 15 premium borosilicate vacuum tubes. These tubes utilize a triple-layer coating (SS/CU/AL) to capture over 93% of solar energy. The vacuum design ensures that heat is trapped inside the water circuit, allowing the system to produce hot water even on chilly mornings or during light overcast weather.
2. Advanced PUF Insulation Technology
Heat loss is the enemy of any solar system. AQUASUN tanks are insulated with high-density, CFC-free Polyurethane Foam (PUF). This industrial-grade insulation ensures that water heated during the day remains hot throughout the night, providing you with a steaming hot shower at 5:00 AM before the sun even rises.
3. Hygienic & Durable Inner Tank
The inner tank is constructed from SUS 304-2B food-grade stainless steel. This material is non-reactive, ensuring that your water remains safe for drinking and bathing. The precision argon-arc welding prevents leaks and protects the tank from the corrosive effects of “hard” water.
4. Minimalist & Low-Maintenance Design
As a non-pressurized system, the 150L model relies on gravity for water distribution. This simplicity is its greatest strength—with no moving parts, no pressure relief valves to fail, and no pumps to repair, the maintenance requirements are virtually zero beyond the occasional cleaning of the tubes.
5. Intelligent Electric Backup Support
To ensure you are never without hot water during the peak of a heavy monsoon or rainy season, the system includes a port for an optional electric booster. When solar gain is insufficient, the thermostat-controlled element provides a quick heat boost, giving you 365-day reliability.
Primary Applications
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Small Residential Homes: Perfect for young families or couples with 1–2 bathrooms.
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Domestic Staff Quarters: A cost-effective way to provide hot water for help or security staff.
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Salons & Small Guest Houses: Providing a steady supply of hot water for commercial use at zero operational cost.
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Rural & Off-Grid Living: The ideal solution for areas where electricity is unreliable or prohibitively expensive.





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