Solar Water Heaters A.S.T. - Advantages:

• Boiler made of Stainless Steel (INOX316L), Glass, or galvanized with 3mm internal plastic coating.
• High-Performance Selective Collector.
• Selective absorber made from the same metal as the boiler to avoid corrosion due to salts.
• System operation in Vacuum State (CVACUUM).
• Laser Welding of Copper Absorber Tubes.
• Heat transfer with Ethyl Alcohol, which vaporizes quickly due to its low boiling point.
• Unbreakable Glass (SECURITY GLASS).
• Rapid Performance, even at the lowest radiation levels, due to the system's low inertia.
• Exchanger inside the Boiler, which immediately transfers energy from the Ethyl Alcohol vapors.
• Maximum Productivity in hot water in minimal time.
• Minimization of heat losses due to the compact system.
• Innovative Design and High Aesthetics.
• Space & piping economy.
• Excellent Energy Behavior and Consistent Performance over the years.
• Never freezes (resistance up to -60°C).
• No need for antifreeze replenishment or replacement.
• Possibility of installation expansion according to needs.
• Ease of installation.
• Guaranteed Purchase Payback.
• High thermal System Efficiency.
• Avoidance of Night Reverse.

The AST solar water heaters have:

• Specially designed Frame from Aluminum Profile.
• Unbreakable Special Glass (SECURIT) with 92% Permeability (LOW IRON, TEMPERED) and Resistance to temperatures and Pressure six (6) times greater compared to common glass.
• Absorber with Selective Aluminum Plate, welded to Copper Tubes using LASER, for perfect Thermal Conductivity.
• Copper Tubes Φ22Χ0.8mm and Φ8Χ0.5mm.
• Freon-free Polyurethane Insulation.
• Rock Wool Insulation.
• The Collector Sealing is done using Special EPDM Rubber, which withstands Ultraviolet Radiation and the High temperatures developed in the solar water heater.

That's why AST solar water heaters are top-notch technology.