Versatile and Robust Heat Pump Cylinder

The Viessmann Vitocal Heat Pump Combi Cylinder 225/50 Litres is a UK-manufactured indirect unvented hot water storage cylinder designed specifically for use with air source heat pumps. Made from corrosion-resistant Duplex stainless steel and encased in a rust-resistant steel shell, this cylinder delivers long-term reliability and thermal efficiency, making it a solid choice for installers looking to offer dependable domestic hot water solutions.

Built to UK Standards

This cylinder is approved under the UK Building Regulations (G3) and Water Supply Regulations, making it a safe and compliant option for domestic installations. It features all necessary safety and control components including a temperature and pressure relief valve, high-limit thermostat, and an external expansion vessel. The product is Benchmark certified to help meet building regulation requirements.

Efficient Thermal Performance

The integrated buffer store and high-flow stainless steel coil allow the Viessmann Vitocal Heat Pump Combi Cylinder 225/50 Litres to work efficiently with modern heat pump systems. It maintains hot water temperature with minimal energy loss thanks to its thick layer of environmentally friendly polyurethane foam insulation, reducing energy costs and improving system performance.

Installation-Friendly Design

Designed with UK installers in mind, this cylinder includes all key safety components and is straightforward to fit and commission. With vertical installation on a level base, outward-facing connections, and accessible maintenance points, it’s easy to service and install—even in tighter spaces.

Ideal for Domestic Hot Water Systems

With a 225-litre hot water capacity and an integrated 50-litre buffer, this model suits households needing reliable hot water and stable system pressure. It supports high demand periods while maintaining performance and efficiency throughout the year.

Key Features

• 225-litre domestic hot water with 50-litre integrated buffer store
• Duplex stainless steel construction for corrosion resistance
• Compliant with UK G3 Building Regulations and WRAS-approved
• Pre-fitted temperature and pressure relief valve and zone valve
• Supplied with immersion heater, external expansion vessel, and control components