Contact us today to arrange a seminar or complete the form below.

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Contact us on 01372 722277 for further information or a quotation.

Understanding the BESA Test Standard for Heat Interface Units – VWARTS and All

BESA (British Engineering Services Association) have published the first UK test standard for HIUs to enable independent testing. This new test standard is aimed at providing system designers with a robust, reliable and comparable set of HIU performance figures under typical UK operation conditions.

Accredited by The Chartered Institution of Building Services Engineers (CIBSE), our seminar provides credits towards consulting engineers’ Continuing Professional Development (CPD). We will explore all aspects of the test regime during the seminar, and discuss how for the first time, designers and specifiers will be able to see the impact of a specific HIU on their network.

This is an informative and educational 60 minute CPD seminar, ideal for M&E consultants, contractors, and housing developers.

This comprehensive seminar covers topics such as –

  • Heat Networks – Where are we now?
  • How does HIU performance & sizing impact on heat network efficiency?
  • BESA Test Overview
  • Space Heating Test
  • Dynamic DHW Performance
  • The role of the Keep Warm / Stand-by Function
  • VWART Calculation – A benchmark for HIUs
  • Other Key Considerations

The seminar can be held at client’s premises or at the Evinox Energy offices in Chessington, and at a time convenient to you.

Our speakers are highly experienced in communal and district heating with relevant professional qualifications. A certificate will be provided to all attendees for obtaining CIBSE CPD points and refreshments will be supplied.

Evinox also offer a CIBSE accredited seminar that provides a general Heat Network Design overview. You can find more information here.

Please contact us on 01372 722277 or complete the contact form below for further information or to book a seminar.

Evinox-Headers-Battersea Power Station


  • Designed for Modern Energy Efficient Heat Networks
  • Smart Energy Regulation and Control
  • SmartTalk® Communications Network – Units Internet Connected for Remote access
  • Flexible Metering & Billing with Built-in PAYG Technology
  • Room Controller & Energy Display Device
  • Remote Warranty Validation & Service & 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® HIU Enhanced Warranty Cover
  • Combined Packages for Metering, Billing and Service & Maintenance
  • Domestic Boiler Service & Maintenance