Engineered for highly efficient hot water storage, the Vaillant uniSTOR 150-litre indirect unvented cylinder integrates flawlessly into modern sealed heating systems. Constructed from premium stainless steel, this robust unit offers exceptional longevity and resistance to internal degradation. Benefitting from outstanding thermal insulation properties, it achieves a highly coveted ErP A energy rating, significantly minimising standby heat loss and driving down overall fuel consumption. The cylinder is particularly suited for upgrading outdated open-vented setups, rapidly delivering mains-pressure hot water to showers and taps without requiring a bulky cold water storage tank in the loft space.

Designed with installer convenience in mind, the 150L model features adjustable feet to ensure stability across uneven flooring in utility rooms or airing cupboards. Capable of processing flow rates up to 900 litres per hour, it easily meets the rigorous demands of multi-bathroom domestic properties. The streamlined 595mm diameter casing provides a neat professional finish while ensuring retrofitting into existing infrastructure remains straightforward. This high-capacity storage vessel represents a dependable solution for delivering powerful uninterrupted hot water alongside an existing system boiler.

Q: What is the energy efficiency rating of this storage vessel?
A: It boasts a highly efficient ErP A rating due to advanced thermal insulation.

Q: Can this unit handle uneven flooring in the installation area?
A: The base incorporates fully adjustable feet to maintain precise vertical alignment.

Q: Is this model compatible with an open vent boiler configuration?
A: It integrates seamlessly with both sealed systems and existing open vent boiler infrastructure.

Q: What material forms the core structure of the tank?
A: The inner cylinder is fabricated entirely from high-grade stainless steel.