Heat Interface Unit With Hot Water Storage

The CENTRALflow heat interface unit provides a unique and energy efficient heating and hot water storage solution for apartment blocks or properties where the heat comes from a centralised source such as a biomass or CHP Plant.

CENTRALflow delivers mains pressure hot water through a thermal store linked to a Heat Interface Unit (HIU) which can also offer a Heat Metering facility.

The CENTRALflow solution also enables other forms of renewable energy, such as solar thermal technology to be included to reduce the carbon footprint and minimise operating costs.

Due to the nature of the product, each heat interface unit is designed and manufactured to order allowing complete flexibility on sizing, fuel sources and connection placement.

We have been championing the benefits of hot water storage for many years, but the Hot Water Association document also lists no fewer than 22 advantages of using stored hot water over instantaneous systems. Using stored hot water solutions within heat networks has many advantages over systems that generate hot water instantaneously. Click here to read the reasons why hot water storage is beneficial within heat networks.

For further information on the CENTRALflow heat interface unit, our Technical Sales Team are on hand to discuss the optimum solution for your requirements and can carry out full site surveys.

  • Sized to fit available space
  • Available as cylinder or rectangular tank
  • Unvented or Vented Storage
  • Solar Coil option
  • Mounted on frame or separate
  • Back-up immersion heater
  • Optional heat metering
  • Pay as you go
  • Main Pressure Hot Water Storage System
  • No Gas Pipe-work or Carbon Monoxide Issues
  • No G3 Certification Required For Installation
  • Simplified Installation & Reduced Maintenance
  • Immersion Heater Back-up for Summer Use
  • Reduced Central Boiler & Pipe-work Size
  • Heat Metering & Pay As You Go Options
  • Provides full separation between the primary circuit and the individual apartments
  • Suitable for private housing with limited access
  • Allows occupant to control their own heating and water supplies
  • No separation between primary circuit and individual apartments
  • Suitable for social housing where access is easily obtained
  • Allows occupant to control their own heating and water supplies

Our focus is very much on the manufacture of copper hot water cylinders and tanks. Copper provides fantastic benefits including;

  • Ability to kill 99% of bacteria including Ecoli and legionella
  • One of the most efficient conductors of heat
  • Significantly more flexible for manufacturing than other materials
  • Long lifespan due to its amazing resistance to corrosion
  • 100% recyclable


For further information see our brochure The Ultimate Supermetal or visit our Copper Facts page.