6 www. refrigerationandaircon. co. za RACA Journal I April 2026
LOCAL INNOVATION business
The fact that the software’ s developer remains actively engaged and responsive( Johannsen notes frequent user queries and feature enhancements) gives it a level of service and customisation often lacking in large-scale vendors.
“ Because the software evolved directly out of my consulting practice – not from pure research or lab development – it’ s naturally attuned to real-world workflows: sizing, design iteration, client presentations and compliance filings. That practitioner heritage is one of our key competitive advantages. It means the features are shaped by day-today engineering needs rather than by hypothetical‘ ideal’ scenarios.”
As the built-environment and HVAC industry transitions in response to climate change, electrification and digitisation, BSIMAC is positioned to play a relevant role, but it will need to respond to certain trends:
• Globalisation of building-energy standards: While BSIMAC is certified for South African compliance, increasing global alignment of building-energy regulations( for example, Europe’ s EPBD, the US ASHRAE / IES standards, emerging African national standards) opens an opportunity for BSIMAC to be adapted or certified for other jurisdictions. A robust multi-jurisdiction mode could open new markets.
• Integration with BIM and cloud workflows: As building-design workflows increasingly move into BIM( Building Information Modelling) and cloud-based simulation services, there is an advantage for simulation tools that integrate seamlessly with BIM authoring tools( Revit, ArchiCAD) and support model‐exchange formats( IFC, gbXML). BSIMAC’ s future competitiveness may hinge on how well it interfaces with the broader digital ecosystem.
• Energy performance and operational intelligence: More clients now demand not just energy modelling at design stage, but operational monitoring, dynamic control strategies( demandresponse, smart HVAC controls) and life-cycle energy analysis. Extending BSIMAC to support‘ digital twin’ workflows or linking simulation with actual operational data would further strengthen its relevance.
• Low-cost, emerging‐market focus: BSIMAC’ s heritage in South Africa and its adaptability give it a natural advantage in emerging-market regions, where building-energy regulations are nascent, and affordable tools are in demand. With growing urbanisation in Africa and Asia, a simulation tool that is efficient, locally responsive and cost-effective is a strong value proposition.
• Regulatory trends and energy efficiency pressure: As energy efficiency, carbon-emission reduction and climate-resilience become non-negotiable in building design, tools that support compliance, optimisation and life-cycle performance will continue to gain importance. BSIMAC’ s dual‐function( design and annual simulation) framework means that users can shift from sizing to performance evaluation seamlessly – a strong selling point.
As building-energy demands escalate and regulatory complexity deepens, tools like BSIMAC that blend flexibility, speed and compliance readiness will increasingly matter. RACA
6 www. refrigerationandaircon. co. za RACA Journal I April 2026