Hysopt Calculator: HVAC Component Selection & Commissioning Software
Design once. Recalculate with confidence. Commission correctly.
Move from detailed hydronic design to commissioning-ready outputs in one connected workflow.
Hysopt Calculator links pipe sizing, component selection, hydraulic validation and commissioning settings to the complete system model—so design changes do not mean checking calculations and spreadsheets line by line.
Reduce repeated work, avoid inconsistent specifications and prepare systems for correct first-time operation.
From system design to commissioning-ready outputs
Spreadsheets and component tools can support quick calculations, but detailed HVAC design becomes difficult when information is spread across separate drawings, files and selection tools.
Hysopt Calculator keeps the system connected.
Update the design and recalculate flow rates, temperatures, pressure drops, pipe sizes, component requirements and pump and valve settings from the same hydronic model.
The result:
• Faster, more controlled redesigns
• Consistent calculations and specifications
• Component selections based on full-system behaviour
• Reliable pump and valve presets
• Updated BOM and commissioning documents
• Fewer manual errors, site adjustments and troubleshooting
Less repeated work. More confidence from design to commissioning.
- Drawings, spreadsheets and selection tools are managed separately
- One connected workflow, with fewer handovers and less duplicated work
- Design changes mean checking calculations line by line
- Faster redesigns without rebuilding the engineering work
- Data is copied manually between tools
- More consistent specifications and fewer avoidable errors
- Components are selected in isolation
- Greater confidence that pumps, valves and pipes work together as a system
- Changes can leave drawings, calculations and specifications out of sync
- Updated outputs that stay aligned with the latest design
- Commissioning settings are prepared separately
- More reliable presets and fewer adjustments on site
- Problems are often discovered late
- Lower rework risk and fewer commissioning surprises
- BOMs and commissioning documents take additional effort to assemble
- Commissioning-ready outputs directly from the validated model
Autodesk AECO Strategic Partner
Hysopt brings BIM and physics-based HVAC simulation closer together, helping teams maintain consistent engineering data and reduce rework from P&ID to BIM.
Main features of the Hysopt Calculator
Intuitive P&ID modelling
Build the detailed system once
Create hydronic HVAC systems using a visual P&ID workflow. Components, calculations and commissioning outputs remain connected to the same model.
Hydraulic validation
Find problems before they reach site
Identify hydraulic conflicts, missing components and design inconsistencies before installation and commissioning.
Power, flow & temperature propagation
Keep system values consistent
Calculate and propagate flow rates, temperatures and energy balances throughout the system. When the design changes, connected values can be recalculated together.
Pipe sizing
Size pipes using consistent project criteria
Automatically size HVAC piping using recognised engineering standards and project-specific limits for velocity and pressure drop.
Proven concepts library
Start from proven system designs
Use validated energy-centre templates and system concepts to standardise projects and reduce the effort required to build common configurations.
Generic/manufacturer-specific components
Select components for the complete system
Calculate pumps, valves and other components from full-system requirements, then select suitable generic or manufacturer-specific products.
Partial load analysis
Validate performance beyond peak demand
Understand how pump head, valve positions and hydraulic behaviour change under partial-load conditions before the system reaches site.
Commissioning & BOM export
Turn the validated design into usable outputs
Generate pump and valve presets, pressure drops, Bills of Materials and commissioning documentation directly from the latest system model.
Frequently asked questions
What is HVAC commissioning software?
What is HVAC component selection software?
How is Hysopt Calculator different from traditional component selection tools?
Can Hysopt automatically calculate pump and valve settings?
Does Hysopt support generic and manufacturer-specific HVAC components?
Can Hysopt automatically size HVAC pipes?
Can Hysopt generate Bills of Materials (BOMs)?
How does Hysopt improve HVAC commissioning?
What is partial load analysis in HVAC design?
Which HVAC projects is Hysopt Calculator designed for?
Does Hysopt integrate with the rest of the Hysopt platform?
How does Hysopt reduce commissioning risk?
Explore our resources
Adressing the Pressing Challenges in Today's HVAC Industry
Less Risk, More Profit - Webinar 1
Flamco products in the Hysopt software
Ready to engineer HVAC systems with greater confidence?
Reduce oversizing • Eliminate rework • Defend design decisions • Predict performance before construction
Design, validate, simulate and optimise hydronic HVAC systems using one physics-based digital twin.
Join the Hysopt Academy
Learn how to use the Hysopt software, and gain advanced knowledge on the latest HVAC technologies.
Get tutored by our in-house experts online, in real-life or on demand.
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