With Elmhurst and our expert training partners, you can gain the relevant skills and competency to model your own psi-values and accurately measure heat loss at thermal junctions, through bespoke thermal modelling tools.
✅ Make building compliance easier through modelling your own bespoke psi-values
✅ Strengthen your technical credibility by understanding and managing thermal bridges through accurate psi-value calculation
✅ Offer as a separate service alongside SAP and SBEM work
✅ Bring more value to every PAS 2035 project ensuring robust designs, fewer defects, and verified performance outcomes
2D Psi-Value Training (AutoPSI)
£820 + VAT
| Elmhurst Members Save 40% on This Course! Get an exclusive discount with our Great Green Upskill Initiative. |
Elmhurst has partnered with AutoPSI to deliver a comprehensive on demand 2D Psi-Value Training Course.
This specialist course is ideal for energy and retrofit professionals seeking to build the skills and confidence to carry out 2D thermal bridging calculations for building junctions.
Learners will develop the knowledge to model accurate psi-values and input them into SAP and SBEM assessments using AutoPSI thermal modelling software, in line with BR497 guidance.
2D & 3D Psi-Value Training (TRISCO)
From £1,270 + VAT
| Elmhurst Members Save 20% on This Course! Get an exclusive discount with our Great Green Upskill Initiative. |
Book a place on Elmhurst’s online, combined 2D & 3D online Psi-Value Training Course and learn how to undertake thermal bridging calculations for building junctions for entry into SAP and SBEM.
Using industry-recognised 2D and 3D TRISCO software, you’ll gain the skills and confidence to model accurate psi-values in line with BR497.
Why carry out Psi-Value Calculations?
To help ensure Building Regulations and PAS 2035 compliance, it’s essential to keep a building’s psi-values as low as possible.
High psi-values indicate unnecessary heat loss at junctions, which can lead to increased energy demand, cold spots, and condensation risks, all key concerns when developing new builds and completing retrofit projects.
By modelling your own psi-values, you gain greater control, flexibility, and confidence in your calculations. Rather than relying on conservative default figures, you can model accurate, project-specific junctions that reflect a truer performance of the building.
As a trained Psi-Value Modeller, you’ll be able to undertake bespoke junction calculations tailored to each retrofit design.
This valuable skill not only strengthens your ability to achieve compliance, but also helps you deliver better-performing retrofits, reduce thermal bridging, and demonstrate verified improvements in energy efficiency and comfort, setting you apart in both compliance and retrofit work.
What's involved in psi-value calculations?
Psi-values measure the amount of heat lost through junctions in a building’s fabric, also known as non-repeating thermal bridges. As a trained Psi-Value Modeller, you’ll use detailed construction information to accurately model these junctions for input into SAP or SBEM, whether working on new-build projects or assessing existing buildings as part of retrofit work.
You can use specialist thermal modelling software software, such as TRISCO or AutoPSI, to create detailed models of thermal bridging junctions. These models generate precise psi-value calculations, summarising the inputs and resulting figures.
This process is particularly valuable for professionals looking to improve the thermal performance of existing properties during retrofit projects, or for those seeking to achieve building regulation compliance when default values or pre-modelled psi-values are not available.
No specific qualifications or previous experience are required in order to become a Psi-Value Modeller, however the course is more suited to those who are familiar with creating u-value calculations, such as OCDEAs and NDEAs. Due to the nature of the calculation process it would also be beneficial to have a good level of understanding in maths.
The amount you will earn will likely depend on the size and complexity of a property, as well as the number of properties being assessed.
Clients requesting SAP and SBEM assessments might also require bespoke psi-value calculations if their buildings do not meet compliance using default values or if modelled psi-values from an existing scheme are not available. You could also approach building consultancy firms, product manufacturers and other OCDEAs and NDEAs, who require psi-value modelling for their assessments.
Elmhurst runs separate 2D and combined 2D and 3D training courses. The 2D course takes 2 days to complete whereas the combined course takes 4 days. If you decide to join the Psi-Value Competency Scheme afterwards, you be required to complete and submit test cases for assessment as an entry requirement. Once these have met requirements you can then become a scheme member.
Psi-Value Modellers do not need to join a competency scheme, however it is recommended in order to demonstrate competence and quality to clients.
Competency Schemes provide members with ongoing technical support and guidance which is essential for their role. Membership of a scheme will demonstrate competence and quality to clients, as well as ongoing quality assurance to ensure high standards amongst our members.
Modelled psi-values can be used for a number of applications, SAP and Level 4 SBEM assessments incorporate thermal bridging and having accurately modelled psi-values would help greatly in achieving compliance with building regulations. With the option for using Accredited Construction Details being removed for new buildings built to the new Building Regulations Part L 2021 standards, this will have greater importance.
Other potential sources requiring modelled psi-values include; manufacturers who want to show the benefits of using their products in different scenarios, architects and designers who require greater accuracy in modelling buildings and other OCDEAs or NDEAs who require calculations for their assessments.
Why choose Elmhurst for Psi-Value Training?
Quality lies at the heart of what we do, and it all starts with the training that we offer. We strive to equip individuals with the skills and knowledge required to deliver quality energy assessment services. Since 1993 we have trained thousands of individuals and have evolved our courses to reflect the changing landscape of training delivery and energy assessment.
✔️ Leave feeling confident– leave feeling confident that you can put theory into practice
✔️ Learn at your own pace– our courses cater for those completely new and familiar with energy assessment
✔️ An engaging learning experience– Our trainers have the practical experience and know how to deliver a truly engaging learning experience
✔️ Support beyond the training– As the UK’s largest government approved energy assessor scheme, we can provide technical support to you, not only during your training, but also long after you’ve completed it
Become a Member of Elmhurst's Psi-Value Competency Scheme
Once you have successfully completed the Psi-Value course you can apply to join Elmhurst’s Psi-Value Competency Scheme. Being a member of a scheme provides reassurance to clients that you are trained and competent to provide Psi-Value calculations in-line with the latest industry standards.
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