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Unrivalled performance Our pioneering technology and control systems deliver high precision heat management and unrivalled performance in both domestic and district heating environments.

Best for through-life costs Intelligent design leads to greater simplicity – that’s why our systems are cost effective to install, more reliable and cheaper to run and operate.

Better by design Our unique and innovative technology has been refined over many years and is protected by numerous patents relating to water storage, heat exchange and the networking of communal heating systems.


The HiFlow Heat Exchanger Set is an extremely powerful Modular substation, designed to provide either heating or hot water for larger domestic or commercial properties.  Its modular design, flanged manifolds and supporting frame enables it to be manoeuvred in to position and assembled in the plantroom, without the usual problems associated with access.

Each bank of modules can be fitted alongside various other banks of modules with the primary circuits connecting to a single or multiple primary heat sources.  It is also possible to have dual high / low grade primary heat sources supplying each bank of modules.

The secondary circuit of the modules can be connected to systems running throughout the building such as communal hot water services, multi-zoned heating systems & underfloor heating systems.

Each Heat Exchanger Set is fitted with the latest digital electronic controls and data including the actuator/valve position, settings, temperatures, & alarms is sent to a central control panel which manages all sets to ensure rotation of lead pumps and modules.


HIU Type Modular Heating or Hot Water
Hot Water Configuration Indirect
Heating Configuration Indirect
Heating Temperature Control Yes
Built-in Heat Meter No
Dimensions – (mm) 2000 (H) x 600 (D) x Width (see below)
Heating Output (maximum) 125kW (per heat exchanger set)
Hot Water Output (maximum) 165kW (per heat exchanger set)



6 Exchanger set – 1660mm

3 Exchanger set – 880mm

2 Exchanger set – 620mm


The HiFlow Heat Exchanger Set comes with upper and lower steel casings to protect sensors and pumps, and the pipework is fully insulated against heat and / or condensation.


  • CH or DHW models
  • Range rated plate heat exchangers to suit the load
  • Range rated pumps to suit the specified system requirements
  • Flanged or un-flanged manifolds
  • Steel or stainless steel manifolds
  • Redundancy modules, to provide N+1
  • Various heat meter models for mounting externally


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