Not Just Another BESA Tested Heat Interface Unit
BESA testing provides a recognised benchmark for assessing heat interface unit performance. As more manufacturers publish results, clarity around the data is becoming increasingly important.
The Essco EDGE Heat Interface Unit has been independently tested and passed the BESA UK HIU Test Regime 2025 (Version 3.1), providing transparent performance data for consultants and heat network operators.
BESA Test Results at a Glance
| Test Metrics | Result (High Temp) | Result (Low Temp) | What It Indicates |
|---|---|---|---|
| WVART | 26°C | 32°C | Supports low return temperatures across the heat network |
| DHW Response Time* | 10 secs | 9 secs | Fast delivery of hot water demand |
*Best practice of 10 seconds response time or less achieved in BESA test ensures fast delivery of hot water
What the Results Mean for Heat Network Performance
As more HIUs are tested under the BESA scheme, understanding how products actually perform is increasingly important.
Independent testing provides clear data that allows engineers to compare units using consistent criteria rather than relying on manufacturer claims.
The results achieved by the EDGE HIU demonstrate stable performance in areas that directly influence heat network efficiency and user experience.
What This Means for Your Project
Consultants
Verified performance data supports confident specification and helps inform system design decisions.
Heat Network Operators
Low and stable return temperatures help maintain network efficiency and support long term system performance.
Residents
Consistent domestic hot water delivery supports comfort and reliable day to day operation.
EDGE Heat Interface Units
Essco EDGE HIUs have been engineered to provide dependable domestic hot water and heating interface performance for modern heat networks.
The design focuses on stable control, efficient heat transfer and predictable operation across a wide range of load conditions.
Combined with Essco’s technical support and system knowledge, this provides engineers with a practical HIU option for residential heat network projects.