Virtual Environment

Improve the performance of any building

Integrated Software for Whole-Building Performance Simulation

Used by building design experts around the globe, the Virtual Environment (VE) is a suite of integrated analysis tools for the design and optimization of buildings. The IESVE platform leverages the world-leading simulation engine (APACHE) to allow cross-team collaboration between architects, engineers and contractors, from Schematic Design to Post-Occupancy.

Energy Modeling & Compliance

Tools for fast, accurate, sub-hourly, thermal building simulation of any size or complexity.

Building & HVAC Systems Design

Quick and easy loads calculations and equipment sizing from the earliest stages of design.

Integrated Software

Interoperate with BIM platforms for two-way information exchange and quick digital design.

BIM Interoperability

IES offers unrivalled interoperability with other CAD design and analysis tools. The smooth and robust two-way information exchange between VE and BIM platforms speeds up the design process and facilitates digital design. 

interoperability logos


With origins reaching back over 25 years, the technology originally dubbed ‘APplication for Air-Conditioning and Heating Engineers‘ has evolved into a user-interface, rules processor and the best whole-building energy simulation engine in the world.

Request a Quote

Tell us what you want to achieve and we'll build you a bespoke quotation.