All features

All our software features

An overview of what Hysopt can do for your HVAC installation design, calculation, simulation and evaluation.

Detailed design

Detailed design


  • Hydraulic heating and cooling installations

Fast and intuitive configuration of HVAC installations:

  • Fast model-building using the Base Circuit Methodology
  • Re-use of concepts and models via own models library or the Hysopt Inspiration Library
  • All possible hydraulic circuits and combinations: mixing circuits, mixing injection, diverting circuits, cascade configurations, open headers,storage tanks, heat exchangers, unlimited number of pumps and circuits …
  • Specific circuits for hybrid generation
  • Design of installations with satellite units ( HIU, Heat Interface Unit), in accordance with DIN 1988-300 (2012)

Model validation:

  • Reporting inconsistencies in the model, incomplete model and supervision
  • Reporting unrealistic parameter input

System check, troubleshooting

  • Reporting conceptual design faults (interaction of pumps, missing balance valves, incorrect combination of hydraulic circuits…)

Canvas management:

  • Connecting different canvasses to keep a good overview in large projects

Floor plan:

  • Read in floor plans (.pdf and .dxf) to scale
  • Implement end units
  • Automatic pipe length generation


  • Very fast and flexible updating of design criteria, both comprehensive and differentiated or via tags
  • Multilayer approach for heating, cooling, controls…
  • Adding text fields, working with tags

Components, calculation

Components, calculation

Propagation of thermal powers, flow rates, temperatures, regimes

Pipe selection:

  • In accordance with the desired design criteria (specific pressure drop, flow rate)
  • Various pipe types possible (standards):
    • Steel pipes (welded): NBN EN 10255
    • Steel pipes (presicion): NBN EN 10305-1 en NBN 10305-2
    • Copper pipes: NBN EN 1057
    • Multilayer: NBN EN ISO 21003-2

Powerful computer algorithms for optimal component selection in the whole installation:

  • End units: radiators, convectors, floor heating, heat exchangers…
  • Combined iterative optimisation of all pumps, control valves, balance valves, autoflow, PICV (Pressure Independent control valve), DPCVs (Differential Pressure Control Valve) in the whole installation, taking into account (VDI 2073, VDMA 24199:2005-05):
    • Desired valve authority (2-way valves, 3-way valves)
    • Optimised minimum pump head for all pumps
    • Hydraulic balance
  • Possibility to partially or fully block design variables in case of renovation projects
  • Component selection: generic and/or manufacturer-specific

Tools for hydraulic balancing:

  • Balance valve calculation and presetting
  • Strategic balancing in very large installations
  • Dynamic pressure compensation

Design analysis:

  • Analysis of real flow rates versus design flow rates
  • Analysis of pressure drop designs
  • Analysis of average temperatures
  • Analysis of real valve authorities versus minimum authorities

Static partial load analysis:

  • Visualisation of real flow rates and impact on installation by manually adjusting the stroke of a control valve
  • 2-way valves, 3-way valves, open/close valves…



Dynamic simulation of system variables:

  • Transient simulation and graphs of pressures, flow rates, temperatures, thermal powers, heat flows, control signals… at every possible location in the installation

Implement control strategies and techniques:

  • Heating curves, economisers
  • Room temperature compensation
  • P, PI controllers and freely adjustable setpoint profiles
  • Thermostats, room controllers…
  • Cascade control
  • Control of hybrid generation: boilers, heat pumps, CHP (Combined Heat and Power)…

Analysis of dynamic control behaviour:

  • Analysis of control circuits: stability, speed, accuracy
  • Hydraulic interactivity between components
  • Generator behaviour, start/stop optimisation

Simulation of energy consumption and comfort (control behaviour):

  • Simulation period up to 1 year
  • Thermal comfort (graphs, Room Temperature Lack & Excess)
  • Energy consumption:
    • Generators
    • Pumps
    • Thermal pipe losses
  • Efficiencies:
    • Production efficiency, system efficiency, distribution efficiency
  • Possibility of investment analysis, LCC (Life Cycle Cost)

Parallel simulation of various alternatives

Sensitivity analysis on design parameters and impact on KPIs

Evaluation, Bill of Materials (BOM)

Evaluation, Bill of Materials (BOM)

Export functions:

  • Bill Of Materials, BOM (.csv, Excel)
  • hydraulic balance report, report of real hydraulic versus theoretical balance
  • Calculation note for pump heads and loop pressure drops
  • Hydraulic scheme (.pdf, .dxf)