Case Study on HVAC Project Success Through Integrated Delivery
See how a simulation-led, collaborative HVAC project avoided delays, aligned stakeholders, and delivered results—on time, on budget, and as designed.
The challenge: complex retrofit with tight deadlines
A large healthcare facility faced a familiar yet high-stakes challenge: upgrading its legacy HVAC system to improve energy efficiency and comfort—without disrupting critical operations or exceeding budget.
With multiple buildings, uncertain documentation, and varied stakeholders (FM team, design consultants, contractors, clinical management), the project needed clarity, speed, and coordination from day one.
The strategy: system simulation and shared understanding
Rather than rushing into design or relying solely on outdated drawings, the project team took a model-based approach.
Using Hysopt, they built a full system simulation to map the existing hydraulic network across multiple buildings, validate assumptions around flow, temperature, and control logic, and test multiple upgrade scenarios—including full replacement versus a staged retrofit strategy.
Crucially, the model became a shared reference point that aligned technical and non-technical stakeholders. Engineers, clients, and installers could all work from the same set of validated data—making decisions with confidence, not guesswork.
Discover how Hysopt supports complex HVAC planning across multiple buildings
Tools used to coordinate design and delivery
The integrated approach combined simulation with project planning tools and stakeholder engagement methods:
- Hysopt for full-system modelling, ΔT validation, and scenario comparison
- Digital review sessions with clients to visualise outcomes
- Pre-commissioning simulations to validate sequencing and controls
- QA templates built directly from simulation data to guide installers
- Handover-ready documentation that matched as-built system logic
The result? Fewer questions, faster approvals, and smoother coordination between design and site teams.
Results delivered
By combining simulation with collaborative workflows, the team delivered:
- 100% alignment between system model and installed performance
- A 23% reduction in time spent during commissioning
- Verified ΔT compliance across all circuits from day one
- Over €75,000 saved by optimising sequencing logic before install
- Client sign-off achieved without redesign or delays
More importantly, the facility’s operations were never disrupted—and the upgraded system delivered immediate comfort and energy gains.
Want results like this?
This project didn’t succeed by luck. It succeeded through simulation, collaboration, and shared clarity from start to finish.
If you're looking to deliver HVAC systems that perform as promised—on time and with less risk—start by uniting your team around the same model.
Explore how Hysopt supports high-confidence HVAC project delivery
READ ALSO
The State of HVAC 2026
Discover the 6 key HVAC trends for 2026 in this e-book packed with data-driven insights and actions to help you stay ahead in the changing market.
Download your copy today and see what no HVAC engineer can afford to ignore in 2026.
Explore more
.jpg)
Closing the HVAC Performance Gap: Why It Matters More Than Ever
Many HVAC systems underperform compared to their design specs. In this blog, we explore how closing the performance gap helps you deliver on efficiency promises, reduce waste, and build long-term value across your portfolio.
Net-Zero HVAC in 2026 Building Codes: What You Need to Know
Net-zero is no longer a future goal—it’s the new baseline. As 2026 building regulations take effect across the UK and EU, the pressure is on to ensure HVAC systems don’t just meet minimum efficiency thresholds but actively contribute to decarbonisation strategies. For engineers, contractors and portfolio owners, that shift is more than technical. It changes how systems are designed, commissioned, and justified from the very first sketch.
How Sensitivity Analysis Improves Hydronic Efficiency
Even small variations in flow and diameter choices can create long-term inefficiencies in hydronic HVAC systems. Sensitivity analysis allows engineers to test, refine, and confidently select the most efficient system configuration—reducing energy use and cost without compromising comfort.