Discontinued product. Heatweb no longer manufactures Unvented hot water cylinders, but we service, repair and support every unit in the field. Manuals and troubleshooting guides stay available below.

Book a service or get support

Hot water storage

Unvented hot water cylinders

For when you simply cannot afford to run out of hot water…

Thermal Stores quick to install

Quick to install

Amazon systems come in both basic form and with options for factory fitted controls assemblies to speed up installation and ensure correct functionality. Assemblies include inlet controls, flow-share controls, pumps, sealed system kit, district heating controls and programmers.

Thermal Stores safer systems

Efficient operation with heat pumps

When using renewable heat sources such as air source heat pumps, we offer very high duty primary coils as well as plate heat exchanger inputs to ensure efficient operation and accelerate recovery times.

Thermal Stores high performance

Fantastic performance

The output of an Amazon cylinder is limited only by the supply of heat and water. Systems can be supplied with inlet controls sized to match the required flow rates, and the option for a plate heat exchanger reheat means one can utilise every bit of boiler output.

Our AMAZON range of unvented hot water cylinders generates more hot water per hour than any other unvented cylinder on the market, providing commercial-level outputs from cost effective domestic priced systems.

Unvented hot water cylinders store domestic hot water in a pressurised system. They must be fitted by a G3 qualified installer and serviced annually to ensure they are working efficiently and safely.

  • Enjoy mains pressure at all hot and cold outlets
  • Extremely efficient
  • Ideal for use with heat pumps
  • Lifetime guarantee
  • 2 years guarantee on components
  • High density insulation
  • Full unvented kit supplied, including remote expansion vessel
  • WRAS approved
  • Treated to protect against corrosion

View the range…

Talk to the experts – call 0345 241 1441 or email enquiries@heatweb.co.uk

Still running this unit?

We hold the drawings, settings and spare-part knowledge for every product we built. Annual servicing, breakdown visits and reconditioning are all available.