Design out heat loss. Discover how to use THERM software to identify and calculate 2D thermal bridges for better building performance.
Short, self-paced online course.
Learn how to use THERM software to model 2D thermal bridges & calculate Psi-values, critical for thermal performance in low-energy/Passivhaus design.
Ongoing access to the resources for 1 year plus earn 16 PHI Credit Points
Immediate Start
Self Study
1 Year Access
Coaction Team
£180 ex. VAT
This short course will teach you how to improve the energy performance of your buildings using THERM software. Focusing on 2D thermal bridges, you'll learn skills that you will also be able to apply to more complicated situations once you've mastered the exercises in this course.
The course is broken down into a series of short modules to guide your learning, with exercises throughout to test your understanding:
The THERM course is free when booking the CERTIFIED PASSIVHAUS DESIGNER COURSE.
| Duration | 2 days self-study |
| Delivery Format | Self-paced online learning |
| Price (Standard) | £180 ex. VAT |
| Next Start Dates | Ongoing - start anytime |
| Location | Online |
| Certification & Credits | 16 PHI Credit Points |
| Access & Materials | THERM tutorial files, reference library, 1 year course access |
| Funding Options | May be eligible under CPD / training budgets |
| Accessibility | Reasonable adjustments and additional learning support on request |
We believe better buildings start with better skills — that’s why every Coaction course is grounded in real project experience and focused on practical, actionable learning that builds confidence and competence. Watch our overview video to learn more: Coaction Training Overview
Coaction exists to upskill the built environment — not for profit, but for impact. As a Community Interest Company, every penny goes back into improving training, supporting the workforce and accelerating the transition to low-energy, future-proof buildings.
Why choose Coaction?
Future-focused skills: Every course is shaped by live project experience, aligned with industry best practice and continually updated, giving you the confidence to deliver high-performance buildings now and as standards evolve.
With real project examples, industry best practice and our extensive experience of ground breaking projects, our training builds on tried and tested and quality-assured whole building approaches such as Passivhaus so that you can have confidence to deliver high performance buildings now and as standards evolve.
Progression pathways for every role: From foundation courses to advanced specialist training, we offer clear routes for students, professionals, educators and full delivery teams. Support is ongoing after training, through our alumni community, online resources and industry partnerships.
Fully supported learning experience: You’ll receive the materials and guidance you need to apply your learning, from manuals and sample packs to exam preparation (where relevant), PHI credit points and long-term access to high-quality resources. We'll work with you and your team as needed to make sure you get the right learning in place.
Trusted expertise & recognised training: Delivered by leading UK building-performance specialists, Coaction training has a strong reputation for quality technical content. Our courses are accredited by the Passive House Institute and Passivhaus Trust.
This course will change your approach to and the way you think about and implement sustainable design forever.
What next? Continue learning and exploring how you can further your knowledge on the Passivhaus standard.
Coaction courses ( PHI renewal points)
Retrofit Delivery (16 PHI)
Passivhaus Trust and member approved courses
Certified Training | On Demand | Partner/Member Events
Conferences / Communities / Events
Passivhaus Trust | iPHA | AECB
Publicise your projects and knowledge via post on LinkedIn via your personal or work profiles and tag us.
Keep in touch - we are here to support you.
See our Terms & Conditions here.
You will have access to the content on our learning platform for one year from the date of enrolment.
Where possible we will offer an alternative study plan to suit your availability, please get in touch to discuss this further.
We can help you access consultancy support with specialist trainers. Contact the Operations Team to find out more.