h2x vs Stabicad
This h2x vs Stabicad comparison examines how two MEP design platforms handle system layouts, engineering calculations, automatic sizing, BIM and CAD workflows, collaboration, project outputs and onboarding.
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h2x vs Stabicad: The short answer
h2x is a standalone, cloud-based MEP design platform that connects engineering calculations with visual system layouts, automatic sizing and project outputs.
Stabicad is Trimble's MEP design and calculation software for Revit and AutoCAD, bringing mechanical, electrical and plumbing tools directly into the selected CAD or BIM environment.
The main difference is where engineers complete the core design work. h2x provides a focused browser-based environment that can be used independently of Revit or AutoCAD. Stabicad keeps MEP modelling and calculations within the Revit or AutoCAD model.
Choose h2x if:
You want engineers to start calculations, layouts and sizing in a focused workflow without requiring Revit or AutoCAD for the core design process.
Choose Stabicad if:
Your team wants MEP modelling, calculations and documentation to stay directly within Autodesk Revit or AutoCAD as the CAD or BIM model develops.
What are h2x and Stabicad used for?
h2x is MEP design software for mechanical, plumbing and fire engineers. Users can begin from project drawings, develop engineering calculations and system layouts, automatically size pipes and ducts, and produce professional design outputs.
- Designed around the engineer's workflow, from early design through to final documentation
- Mechanical, plumbing and fire system design
- Heat loss and heat gain calculations
- Heating, cooling, ventilation, water, drainage and gas systems
- Automatic pipe and duct sizing
- CIBSE-verified system calculations and support for international standards
- PDF drawings, 3D view, reports and BOMs
- AutoCAD and Revit integrations
Stabicad is MEP design and calculation software from Trimble that works directly within Revit and AutoCAD. It combines MEP modelling with integrated calculations, manufacturer content and technical documentation tools.
- Built around MEP modelling and calculations within Revit or AutoCAD
- Mechanical, electrical and plumbing design
- Heating and cooling system calculations
- Pipe and duct sizing
- CIBSE-verified calculation workflows
- Manufacturer-specific MEP content
- BIM/CAD documentation and project outputs
h2x vs Stabicad comparison table
| Comparison area | h2x | Stabicad |
|---|---|---|
| Product overview | ||
| Primary purpose and best fit | Standalone MEP system design, calculations, automatic sizing and project outputs for engineers, consultants and contractors. | MEP modelling, calculations and documentation integrated directly within Revit or AutoCAD. |
| MEP design scope | Heating, chilled water, domestic water, ventilation, ductwork, underfloor (radiant) heating, MVHR, fire protection, gas, stormwater and wastewater. | Mechanical, electrical and plumbing workflows, with capabilities varying by product, localisation and host platform. |
| Workflow, review and collaboration | ||
| Platform and access | Cloud-based platform accessed through a supported web browser without requiring Revit or AutoCAD for the main engineering workflow. | Desktop MEP software that operates within compatible Revit or AutoCAD environments. |
| CAD and BIM workflow | Designs can be transferred into AutoCAD or Revit for further drafting or BIM development. | MEP systems, calculations and documentation remain directly within the Revit or AutoCAD workflow. |
| Starting and developing a design | Engineers can begin from project drawings and progressively develop loads, layouts, calculations and sizing without requiring a detailed BIM model. | Stabicad supports design from concept through installation, with engineering work developed inside its Revit or AutoCAD environment. |
| Connected system design and sizing | System layouts remain connected to engineering calculations, flow rates, pressure losses and automatic sizing as the design changes. | Integrated calculations operate against the MEP model, with system sizing and calculated values updating as design changes are made. |
| Calculation results and review | Calculation results can be viewed visually against the system layout, with filters helping engineers check calculated values in the context of the design. | Calculation results can be reviewed through integrated calculation and reporting tools within the Revit environment, with calculated values and system sizing applied directly to the model. |
| Design iteration | Engineers can revise layouts while connected calculations and sizing remain aligned throughout the engineering workflow. | Stabicad recalculates systems as model changes are made and can automatically update calculated system sizing. |
| Collaboration and design review | Browser-based project sharing makes current design information accessible without every reviewer requiring the same CAD or BIM application. | Stabicad integrates with Trimble Connect for cloud-based sharing, review and coordination, while the core design workflow remains within Revit or AutoCAD. |
| Calculations and outputs | ||
| Heat load calculations | Includes heat loss and heat gain calculations within the same workflow used for system design and sizing. | Provides heating and cooling system calculations, including heat loss and cooling load data for system components. Trimble's public product information does not clearly describe an equivalent standalone room-by-room building heat-load calculation workflow. |
| Electrical design | Not currently supported. Electrical functionality is on the h2x product roadmap, but no release date has been announced. | Supports electrical modelling and calculation workflows, including CIBSE-verified electrical demand calculations. |
| Supported standards and methods | Supports a range of international standards and calculation methods including CIBSE, ASHRAE, BS, CIPHE, EN, DIN, AS and NFPA workflows. | Supports regional standards and calculation methods according to localisation; UK examples include CIBSE, BS 7671, BS EN 806 and BS 8558. |
| Main project exports | PDF drawings, calculation reports, sizing reports, Bills of Materials, schedules and design-sharing links. | CAD/BIM models, calculation reports, design data, schedules and other documentation within the Revit or AutoCAD environment. |
| Adoption, onboarding and pricing | ||
| Implementation, training and support | Focused browser-based workflow with demonstrations, custom training, learning resources and direct technical support. Advanced CAD/BIM authoring skills are not required for the core engineering process. | Requires familiarity with Stabicad and its selected Revit or AutoCAD environment. Trimble provides training, learning resources and support. |
| Evaluation and pricing | Free project, demonstration and guided-evaluation options are available. Pricing depends on team size and required capabilities. | Pricing is quote-based and depends on your team's requirements. Contact Trimble's sales team for current pricing. No free trial is currently advertised. Buyers should also account for the required Revit or AutoCAD environment where applicable. |
Note: Stabicad functionality varies according to product version, region, discipline and host platform. Stabicad information was last checked in September 2026.
Where h2x and Stabicad differ
The clearest differences are less about whether the platforms can perform engineering calculations and more about where that engineering takes place, how teams begin and iterate a design, and how easily project information can be reviewed outside the CAD or BIM environment.
Focused engineering vs CAD/BIM-based workflow
h2x gives engineers a dedicated environment for calculations, layouts, sizing and design review without requiring them to complete the core engineering process inside Revit or AutoCAD. Stabicad integrates its engineering tools directly into those host applications, combining MEP calculations with the CAD or BIM modelling workflow.
Project drawings vs host-platform design
h2x allows engineers to begin developing loads, layouts, calculations and sizing from project drawings within a standalone browser workflow. Stabicad users develop the MEP design within Revit or AutoCAD, where calculations operate against the systems being modelled as the design progresses.
Engineering iteration without making BIM the focus
h2x keeps the system layout, connected loads, calculations and automatic sizing together as the engineering design evolves, allowing engineers to make and review design changes without first developing them inside a detailed BIM authoring environment. Stabicad also recalculates systems as changes are made, but that process remains part of the Revit or AutoCAD modelling workflow.
Browser-based review vs CAD/BIM project access
h2x allows designs to be shared and reviewed through a browser, making it easier for engineers and project stakeholders to access information without requiring the same desktop CAD or BIM environment. Stabicad's core design workflow remains within Revit or AutoCAD, while wider review and collaboration can be handled through Trimble Connect and the surrounding BIM ecosystem.
Should you choose h2x or Stabicad?
The better option depends on whether your team wants a standalone engineering workflow or MEP design and calculations embedded directly within Revit or AutoCAD.
Verdict: h2x is the stronger fit for teams that want engineers to complete calculations, system layouts and sizing within a focused browser-based workflow before or alongside detailed CAD/BIM development. Stabicad is the stronger fit for teams that want MEP calculations, detailed modelling and documentation embedded directly within Revit or AutoCAD.
Why teams choose h2x over Stabicad
Stabicad provides extensive MEP design and calculation capabilities within Revit and AutoCAD, including CIBSE-verified mechanical calculations, electrical workflows and manufacturer-specific BIM content.
However, not every engineer needs the core design process to take place inside a full CAD or BIM authoring environment. h2x keeps CIBSE-verified engineering calculations, system layouts, automatic sizing and project outputs within a focused browser-based workflow, allowing engineers to develop and review the design independently before transferring it into AutoCAD or Revit when required.
Automate heat load calcs
Calculate heat loss and heat gain directly from the building design, with loads automatically linked to your pipework and ductwork for system sizing.
Share designs through a browser
Give colleagues and stakeholders access to current engineering information without requiring everyone to work inside the same CAD or BIM application.
Move designs into Revit
Complete the core engineering design in h2x, then transfer it into Revit for further BIM development using your company worksets and families.
What teams say about h2x
h2x vs Stabicad frequently asked questions
Ready to see how h2x can work for your team?
Book a demo to see how h2x connects calculations, system layouts, automatic sizing and project outputs in a browser-based workflow without requiring Revit or AutoCAD for the core engineering process.
