IESVE Virtual Environment 2025 – 30-Day Full-Feature FREE Trial

Take IESVE 2025 for a 30-day test-drive with every module unlocked—no payment required. Explore performance-analysis tools that let you embed energy, daylight, HVAC and CFD simulation straight into your design workflow.

Overview

The IESVE 2025 free trial gives you 30 days of unrestricted access to the industry-leading Virtual Environment suite. From early-stage massing to detailed HVAC sizing and compliance, every tool—ModelIT, ApacheSim, SunCast, Radiance, MicroFlo, VistaPro and more—is included so you can experience how performance analysis can be embedded at the heart of the design process instead of bolted on at the end.

During the trial you can create real projects, run full dynamic thermal simulations, produce Part-L & ASHRAE 90.1 reports, generate 3-D CFD airflow models and daylight autonomy sDA plots. All results can be exported to VistaPro for interactive 3-D visualisation or to Excel/CSV for further analysis. No feature limits, watermarks or reduced-resolution outputs—just the same power 40,000 global users rely on every day.

Getting started is simple: register, download the 2 GB installer, request your licence key and activate. Manual key issue means you should allow one working day, but once issued the countdown only starts when you first open the software. A library of free tutorials, live web-demos and community forums is ready to accelerate your learning curve.