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CWS Chilled Water System Vessels

CWS Chilled Water System Vessels

The Adveco Chilled Water System (CWS) range of chilled water tanks for commercial projects with larger cooling demands. CWS is a specialised range of premium carbon steel primary system vessels designed to serve a diverse range of cooling applications typically incorporating heat pumps, chillers or fan coils which require chilled water storage.

The CWS range offers 10 models from 300 litre to 5000 litre capacity. This extra capacity enables a chiller system to considerably improve performance by ensuring better temperature control, increasing chiller longevity, reducing condenser cycling and improving system start-up times.

Each vessel features multiple large bore flanges providing high-capacity connections as standard at high and low levels providing greater versatility to cater for a wide range of system applications with moderate to high flow rates. These tappings enable the tanks to be used with multiple cooling sources, including heat pumps.

Each CWS tank is supplied with dual-layer insulation, the inner lining providing an anti-condensation underlay, and then a further 100mm of outer insulation.

Multiple sensor pockets at all levels provide straightforward integration of controls or BMS sensors. An inspection/clean-out flange allows for ease of service or maintenance.

The versatility of the Adveco CWS with its multiple large capacity connections means that it is capable of meeting the large majority of system requirements for cooling, negating the need for bespoke cylinder manufacture which is both more expensive and time-consuming. For projects specifying larger chilled storage vessels CWS offers everything you need at a ready-to-go price.

Features & Key Technologies


Designed to work with compact spaces

Designed with a low maximum height (1.87m to 2.265m with insulation) CWS despite its larger volume is easier to install in plantrooms, especially those with limited clearance. Due to the lower vessel height, CWS incorporates three internal partitions to aid in stratification and preventing preferential flows. The outer insulation is also temporarily removable to aid in siting during installation.

The vessels also lend themselves to incorporation into packaged plant rooms to leverage the advantages of offsite construction, which include production oversight for improved system quality and rapid delivery to install times.

The Adveco CWS range is suitable for use with standard working pressures of up to 6 bar. For projects requiring higher pressure, such as multi-storey buildings with basement plant rooms, 10 bar versions are available on request in all sizes.

Technical Specifications & Downloads

Product brochure download

Adveco Product Guide 2023 - Hot water, heating, renewables, pre-packaged plant rooms for bespoke commercial projects

Why Choose Adveco


50 Years

Adveco Ltd. is the independent hot water specialist for the commercial built environment and has historically traded as A.O. Smith Water Heaters in the UK.


Highest quality products and services

We prioritise our clients’ needs to deliver bespoke, practical systems.


Full aftersales support

Maintenance and service packages, commissioning, spares, warranty and technical support for your application.