Common questions from manufacturers and distributors registering commercial HPWH systems for VEU Activity 44 and ESS IHEAB.
Does EN 14825 test data satisfy the EN 14511 requirement for VEU Activity 44 and ESS IHEAB?
No. EN 14825 is a seasonal efficiency (SCOP) standard used for ERP labelling. VEU Activity 44 and ESS IHEAB require EN 14511 physical testing at specific steady-state conditions (A2, A7, A19, A38 across multiple inlet water temperatures). The two standards are not interchangeable. EN 14825 reports cannot be used to substitute EN 14511 test data for scheme registration.
Do VEECs/ESCs change over time (e.g. monthly/yearly)?
VEU certificates no longer adjust annually: the final EEF change took effect 1 February 2025 and is now fixed (except for policy updates). ESCs also do not change over time except via policy changes. However, scheme rule changes (e.g. VEU Activity 44 rule changes and IPART’s August 2025 “confidence factor”) can significantly alter certificate values, so old calculators may be outdated. Always verify against the latest specifications.
Can VEEC claims be backdated? What date do they count from?
VEECs are not backdated to the lodgement or publication date. They are eligible from the date the activity (installation) was completed. Claims must be created no later than six months after the end of the year in which the activity occurred (e.g. a 2025 installation must have VEECs created by 30 June 2026).
What EN 14511 test conditions are required, and how many test points?
12 test conditions are required, covering:
- Air dry bulb temperatures of 2, 7, 19, and 38 °C
- Water inlet temperatures of 10, 40, and approximately 60–70 °C (the upper point should be just below the system’s maximum rated water temperature)
Are small systems eligible for commercial VEECs/ESCs?
Systems with average heat pump capacity below 10 kW face significantly scaled-down incentives:
- Under VEU Activity 44, products with average tank size below 425 L are not eligible for commercial VEECs. Tanks below 425 L are eligible for commercial ESCs.
- Under ESS, IPART’s August 2025 “confidence factor” heavily reduces certificates for systems with average HP capacity below 10 kW.
How long does the registration process take?
Once all documentation is received (EN 14511 test report, tank drawings, schematics, installation manual, electrical safety certificate, data plate images), modelling and submission preparation takes approximately 2 weeks. VEU/ESS approval typically takes 6–10 weeks. Follow-up applications for additional system variants are usually faster once auditors are familiar with the system.
Can preliminary performance data be used for modelling?
Preliminary modelling can be done using manufacturer data (COP, capacity, power at various conditions) to estimate certificate values before committing to testing — this is useful for go/no-go decisions. However, the full registration and official certificate calculation requires official EN 14511 test data. Results from preliminary modelling are subject to change.
Does the product need to be registered on EESS for the VEU application?
Electrical safety certification is only required for systems with tanks ≤ 700 L.
Is a separate warranty document required for VEU submissions?
Warranty documents are only required for systems with tanks ≤ 700 L.
Can the VEU and IPART (TESSA) submissions be lodged simultaneously?
Yes — both can proceed in parallel. Modelling and documentation preparation covers both schemes simultaneously, saving time.
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