The Silox S range offers all the advantages of AIC’s twin wall cylinder technology in a compact design. With capacities from 90 to 260 litres, these stainless steel cylinders are engineered for efficiency, durability, and long-term reliability in residential and small commercial settings.
Silox S uses a twin wall configuration where the outer primary tank transfers heat directly to the inner DHW cylinder. This design maximises the heat exchange surface for faster reheat times and constant hot water availability, even in smaller-capacity units.
150–2000 m2
2000–5000 m2
The Silox cylinders are built around the innovative twin wall concept, where a primary outer tank transfers heat to the inner DHW cylinder across its full surface area. This design maximises heat exchange, ensuring faster reheat times and constant hot water availability. The inner cylinder is corrugated to create natural expansion and contraction during operation, producing a self-cleaning effect that reduces scale deposits and maintenance needs while preserving long-term performance.
To further enhance efficiency, Silox cylinders are insulated with CFC- and HCFC-free polyurethane foam, injected directly to guarantee uniform thickness and density. This advanced insulation minimises heat losses, outperforming even the strict requirements of DIN 4753/8. For added flexibility, models up to 1000 litres can be equipped with an immersion heater of up to 12 kW, ensuring a dependable backup source of hot water in every installation scenario.
AISI stainless steel
316L
Absorbed power
up to 150 kW
DHW peak flow
up to 1.862 l/60’
With a state-of-the-art CNC machine park, we handle the entire metalworking process in-house – from R&D designs to bending, shaping, and welding (including laser and diffusion methods). Our laboratories ensure the highest weld quality, while a digital tracking system guarantees full component traceability. We work mainly with stainless steel, as well as titanium, copper, and other certified metals from European suppliers.
The internal heat exchanger of the Silox S undergoes passivation to enhance its resistance to corrosion. Special welding procedures and the use of 316L stainless steel, with very low carbon content and an alloy composition of chromium, nickel, and molybdenum, ensure maximum corrosion resistance while minimising any side effects of welding.
Silox cylinders are insulated with high-density, CFC- and HCFC-free polyurethane foam, delivering heat retention well below the limits set by DIN 4753/8. This ensures minimal standby energy loss, long-lasting temperature stability, and measurable savings in daily operation — even in large-capacity models up to 1000 litres.
Thanks to the Twin Wall heat transfer concept, Silox cylinders maintain uniform high water temperatures across the entire tank volume. This design prevents cold spots, ensuring hygienic operation and effective protection against Legionella bacteria.
