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 of 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 radiations, due to the system's low inertia.
• Heat 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 system expansion according to needs.
• Ease of installation.
• Guaranteed Purchase Payback.
• High thermal System Efficiency.
• Avoidance of Nighttime Reverse.

The AST solar water heaters have:

• Specially designed Frame made of Aluminum Profile.
• Unbreakable Special Glass (SECURIT) with 92% Permeability (LOW IRON, TEMPERED) and resistance to temperatures and pressure six (6) times greater than ordinary 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 Sealing of the Collector is done using Special EPDM Rubber, which withstands Ultraviolet Radiation and the High temperatures developed in the solar water heater.