Trial / Demo
We're excited to release IESVE 2025 Feature Pack 2, our latest update designed to empower engineers and sustainability consultants across the globe to deliver climate-resilient, future-ready buildings and HVAC designs, with faster insight, and stronger early‑stage decision support.
Key new capabilities include; instant model‑free climate assessment, EV charger load integration, thermal storage tank modelling, HVAC part‑load sequencing automation, and Title 24 (2025) support in California.
New Climate Assessment Report - Instant, Model-Free Climate Insight
Within seconds, teams can access one-click climate assessment directly from APLocate. No model setup required, no waiting for simulation results—actionable climate data delivered instantly.
The new Climate Assessment Report streamlines early design workflows by instantly delivering region-specific climate resilience insights, detailed weather data analysis, and interactive graphics for informed decision-making. It enables robust client engagement, supports LEED V5 requirements, and positions firms as strategic climate advisors even before modelling fees are incurred. Teams can seamlessly progress from climate assessment to early architectural models to system sizing and detailed HVAC design in a unified workflow.
North America: Title 24 (2025) Compliance & Electrification
IESVE is fully approved for Title 24 (2025), continuing its longstanding 7+ year support for California energy code compliance. It introduces enhanced electrification features, including seamless EV-charging demand integration and the modelling of stratified heated hot water storage tanks as auxiliary heat sources. The design-first workflow allows users to generate actual, proposed, and baseline models efficiently for non-residential new construction projects, with a geometry export tool into CBECC available for multi-residential and other residential projects.
ApacheHVAC Decarbonisation Updates
Addition of Thermal Storage: Stratified Hot Water Storage Tanks
Model electric auxiliary heat sources on Hot Water Loops, enabling exploration of heat pump-driven systems and reduced fossil fuel dependency.
Intelligent Part-Load Cooling Equipment Sequencing
Automatic optimisation of cooling equipment transitions as building loads fluctuate. The system replaces manual guesswork with intelligent sequencing, pinpointing fixed ("design") and dynamic ("real-world responsive") load range percentages computed directly from equipment performance curves.
New EV Charger Integration
Effortlessly incorporate EV charging loads into your IESVE models for precise calculation of peak demand and total electrical consumption.
· Total Building Load Capture: Seamlessly integrate EV charging loads into overall building energy modelling for accurate peak demand and total electrical energy assessment.
EU Navigator Improvements
This Navigator brings together two core capabilities to support EU‑compliant loads calculations and PMV occupant comfort optimisation – directly from the IESVE model.
· Updated for FP2 the EU Heating Loads Calculator rapidly delivers EN 12831‑compliant, room‑by‑room heating loads. The calculation now considers non heated rooms for more accurate adjacencies with heated volumes.
Industry Validation & Trust
Alongside these powerful new features, IESVE 2025 Feature Pack 2 reinforces IES’ Apache engine as the industry gold standard:
Find out more and download Feature Pack 2
IESVE 2025 Feature Pack 2 is available now to all users with a valid license. Whether you're designing for climate resilience, delivering low-carbon HVAC systems, or preparing for EV-integrated buildings, FP2 gives you the tools to meet modern performance, compliance, and decarbonisation goals.
Explore the complete suite of Feature Pack 2 capabilities and download today.
