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Combines compact design with efficient HIU performance.

  • Delivered ready to install – saves time and cost
  • Simplified project coordination – one supplier, one point of contact
  • Extra compact design – saves space
  • High-performance Heat Interface Unit
  • Internet-connected for meter readings and remote aftercare

ModuSat® FUSION prefabricated utility cupboards

Supplied fully fitted, pre-tested and ready to install on-site. Complete with Heat Interface Unit (HIU), Mechanical Ventilation and Heat Recovery unit (MVHR). Plus, all associated piping and electricals.

The ultra-compact design packs a punch. Allowing for all utilities and services to be contained in one area. Away from the kitchen and living space.



  • Extra compact  (750mm Depth)
  • Manufactured offsite to approved design
  • Fits through a standard doorway
  • Metal white goods finish
  • Choice of worktop
  • Bespoke design available
  • Electronic trolley for Health & Safety regulations
  • Load bearing shelf to aid installation
  • MVHR (type/model changeable)
  • ViewSmart Room Controller
  • ENE3 Energy Display Device (Optional upgrade)


  • HIU – ModuSat® XR/XR-ECO Twin Plate 30, 55 or 70
  • Independently tested to the UK standard for HIUs from BESA
  • Designed to deliver an excellent VWART
  • Programmable Keep-Warm
  • High performance at low primary flow
  • DHW return temps under 25℃, as per CIBSE CP1
  • CIU – ModuSat® SP Cooling (Optional)


  • Open protocol access
  • HIU with Integrated PAYG technology
  • Evinox Billing Options


  • BUS, M-Bus, ModBus or Ethernet TCP/IP
  • SmartTalk® remote control & support for HIU
  • Remote HIU warranty validation
  • Reduced aftercare support costs with ‘SmartTalk® Pro’ web portal

Find out about other models in the range

Our range of ModuSat® Smart Interface Units for district and communal systems are designed and developed by us in the UK. And manufactured in our own production facility. Models include instantaneous heating and hot water, stored hot water, cooling, combined heating and cooling and various single plate options.

Discover how Evinox Energy can deliver the best HIU solution for your next new build or refurbishment heat network project

Evinox-Headers-Battersea Power Station

Heat Networks

  • District and Communal Heat Networks
  • Delivery of low carbon heating
  • Heat Interface Units
  • Energy Metering and Billing
  • Service and Maintenance
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Energy Metering & Billing

  • Credit Billing Services
  • PaySmart® Pre-payment System
  • Billing Solutions for Non Evinox Equipment
  • Heat Network (Metering & Billing) Regulations 2014 Advice and Guidance
  • Domestic Heat Meters and Point of Entry & Bulk Meters
Evinox installed communial heating

Service & Maintenance

  • Heat Interface Unit Service & Maintenance
  • Plant Room – Planned Preventative Maintenance (PPM)
  • ModuSat® Heat Interface Unit Enhanced Warranty Cover
  • Combined Packages for Metering, Billing and Service & Maintenance
  • Domestic Boiler Service & Maintenance