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Quickly model Simplified and TM59 overheating assessments with an intuitive workflow powered by EnergyPlus.
Most building simulation software is built to do almost everything. Daylight. HVAC. CFD. Energy. Carbon. That's powerful, if you need it.
But if you simply need to assess overheating on a residential development, it means more software to learn, more tools to navigate and more complexity between you and the question that matters: will Plot 14 pass?
AutoTHERMAL is built to answer that question. Run the Part O Simplified Method or a full CIBSE TM59 dynamic assessment powered by EnergyPlus, all in one focused workflow.
Everything you need for overheating assessment. Nothing you don't.
Overheating takes days you do not have: learning the software, building the model, waiting on a result, then starting over when the design moves.
Before
Days of setup before a single answer
After
You model it yourself, in hours
Test design options earlier, add overheating assessments to your services, assess multiple plots and orientations, or check the summer impact of retrofit measures. AutoTHERMAL gives you the tools to do it yourself.
Enter the geometry. AutoTHERMAL applies the Approved Document O glazing and free-area limits by orientation and risk location, and tells you which facade is over and by how much.
Hourly dynamic simulation on the EnergyPlus engine, with the TM59 occupancy, gains and window-opening profiles already set up. Daytime comfort and bedroom night-time results assessed automatically.
Restrictors, noise, security and fall protection all cut your free area. AutoTHERMAL accounts for them, including ground-floor bedrooms that have to be modelled closed.
Upload your CIBSE DSY or TRY file once and reuse it across every dwelling on the site. Current or future climate, whichever the assessment calls for.
Duplicate a dwelling, change the shading, and see both results together. Find the cheapest fix that passes instead of the first one that does.
Model the house type once. Run every plot and every orientation together and get one schedule back.
Your logo, your practice name, your wording. A full overheating strategy with inputs, assumptions, results and mitigation, ready for the Building Control Body.
Every input, profile and weather file is on screen and in the export. If Building Control asks how you got there, the answer is in the report.
Everything runs in your browser. No high-powered PC, no licence keys, no licence server, no IT ticket.
Upload your floorplans and build the model in a few simple steps: rooms, orientation and build-ups. Save it as a house type and reuse it across the site.
Glazing, shading, openable free area, and any mechanical ventilation or cooling.
The Simplified Method, full TM59 on EnergyPlus, or both. Minutes, not weeks.
A branded overheating strategy report with every input and assumption behind it.
Some dwellings pass the Simplified Method. Others need dynamic modelling. AutoTHERMAL gives you both routes in one workflow, so when a plot needs TM59 you don't need to move the project into another software package or hand it to someone else.
The guides we wish had existed when we started.
TM59 is the methodology Approved Document O points to for dynamic overheating assessment. It has two tests, and most developments fail the second one. Here is what each measures and what a failure is telling you.
Read articleApproved Document O gives you two routes to compliance. Picking the wrong one costs money twice. Here is how to decide early, and the dwelling types where the simple route almost never works.
Read articleThey sound interchangeable and they are not. One is for homes, one is for everything else, and only one has a night-time bedroom test. A short answer and the reasoning behind it.
Read articleAutoTHERMAL is opening to a first group of assessors and design teams. Leave your name and we will tell you when there is a place.