Services · Energy Design
IESVE dynamic thermal modelling to CIBSE TM59
Building physics that predicts how your building will actually perform, so overheating risk is designed out rather than discovered after handover.
Dynamic thermal modelling simulates how a building's temperatures, comfort conditions and energy use respond over time to weather, occupancy and design decisions. AMF MEP's building physics specialists use IESVE, the IES Virtual Environment, to optimise building performance and ensure designs meet the stringent requirements of CIBSE TM59. The result is homes that stay comfortable and energy-efficient, and that remain resilient as the climate changes, with sustainable design principles built in from the outset.
Every assessment applies the standard TM59 occupancy profiles, internal gains and comfort criteria, so results are consistent, comparable and defensible in front of Building Control and planners. We identify the rooms and orientations at risk, then work through mitigation in a deliberate order, with passive measures first and active cooling only where the analysis proves it is needed. Because the same practice delivers the MEP design, the model's findings feed directly into the ventilation, cooling and fabric strategy instead of sitting in a standalone report.
What we deliver
Discuss your project →- IESVE dynamic thermal model of the scheme
- CIBSE TM59 overheating risk assessment report
- Room-by-room results against the TM59 comfort criteria
- Mitigation strategy covering passive measures, ventilation and cooling
- Evidence pack supporting Part O compliance and planning condition discharge
Proof
Where we deliver this now.
What is CIBSE TM59?
CIBSE TM59 is the Chartered Institution of Building Services Engineers' standardised methodology for assessing overheating risk in homes using dynamic thermal modelling. It defines standard occupancy profiles, internal gains and comfort criteria so that assessments are consistent and comparable between projects, and it underpins Part O compliance work on more complex residential schemes.
When should dynamic thermal modelling be commissioned?
As early in the design as possible. The most cost-effective overheating measures are passive ones such as shading, orientation and openable windows, and those decisions are locked in at concept stage. A model built early can design the risk out; a model built late can usually only confirm a problem that is now expensive to fix.
Why use an MEP designer for thermal modelling rather than a standalone assessor?
Because the model's findings have to land in the MEP and fabric design, and one team carrying both closes that gap. At Cyprus Beckton our dynamic modelling shaped a boosted MVHR system with tempered-air cooling that achieves Part O compliance across six blocks. The assessment and the engineered solution were developed together, so the design that got built is the design that was modelled.
Need dynamic thermal modelling (cibse tm59)?
Tell us about your development and we will show you how it fits.
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