Thermal bridge modelling made simple.
Calculate accurate PSI values for SAP assessments and fRSI values for retrofit projects, without the complexity of traditional thermal modelling software.
Trusted by leading energy assessors, housebuilders and manufacturers
AutoPSI makes it easy to create accurate 2D thermal bridge models, calculate PSI and fRSI values and produce professional reports.
Start with a template or build your own junction from scratch. AutoPSI guides you through the modelling process, helping you get from construction detail to calculated result in minutes.
Choose from common construction junctions and adapt them to your detail.
Create bespoke junctions from scratch when a template does not fit your project.
Generate the values you need for new-build energy assessments and retrofit projects.
Turn your completed models into clear calculation reports ready to share with clients, project teams and schemes.
Whether you are calculating junctions every day or need reliable values for a specific project, AutoPSI gives you a faster route from construction detail to result.
One junction detail repeats across every plot. Getting its value right compounds across the site.
Test detailing at design stage, when changing it still costs nothing.
Replace defaults with real values and improve the rating without specifying more fabric.
Model non-standard junctions in existing buildings, and check condensation risk with fRSI.
Show how your product performs at the junction, not just in the middle of an element.
Thermal bridge modelling has traditionally required specialist software and significant training. AutoPSI has been designed to make the process faster and easier, without taking away the flexibility experienced modellers need.
Go from construction detail to calculated result in minutes.
Start with common junction types rather than rebuilding every model.
Create completely bespoke junctions when you need to.
Build constructions quickly using predefined or custom materials.
Define model extents using built-in guidelines.
Access projects and models from anywhere.
AutoPSI supports 2D thermal bridge modelling in accordance with BR497 and the relevant calculation standards, helping users create consistent, auditable calculations.
On a new build, one junction detail repeats across every plot, so an overstated default is the same bad number multiplied by the whole development.
On retrofit nothing matches a published detail, and adding insulation can make a cold spot more critical rather than less. There the number that matters is fRSI.
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After
Spend less time building models and more time using the results.
Need help with an unusual junction, or not sure how a detail should be modelled? Our technical team can support you with model setup, junction extents and thermal bridging calculations, helping you get the most from AutoPSI.
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Using bespoke PSI calculations is the only way to ensure precision, compliance, and cost-efficiency, and AutoPSI makes this process faster and more accessible than ever.
Read articleCreate your first model with AutoPSI and see how quickly you can go from construction detail to PSI or fRSI value.