h2x vs Hevacomp
This h2x vs Hevacomp comparison examines system design workflows, engineering calculations, automatic sizing, project outputs, access, support and the practical process of replacing retired software.
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The short answer
Hevacomp was desktop building services design and calculation software. It was discontinued on 1 January 2026 and no longer receives ongoing product development or support.
h2x is a cloud-based MEP design platform that connects visual system layouts with engineering calculations, automatic sizing and project outputs.
The main difference is that Hevacomp is now a retired legacy platform, while h2x is actively developed and supported. h2x can replace Hevacomp's mechanical and public health design workflows, but electrical design is not currently supported.
Move to h2x if:
You need actively supported software for mechanical and public health design, calculations, sizing and project outputs.
Plan separately for:
Electrical design, which is not currently available in h2x software and will require another solution during the transition.
What is h2x and Hevacomp?
h2x is cloud-based MEP design and calculation software for mechanical, plumbing and fire engineers. Users can trace over scaled PDF drawing sets, create system layouts visually, complete connected calculations, size pipes and ducts and produce professional project outputs.
- Mechanical, plumbing and fire system design
- Heat loss and heat gain calculations
- Heating, cooling and ventilation systems
- Domestic water, drainage and gas
- Automatic pipe and duct sizing
- PDF drawings, Bills of Materials, calculation and sizing reports
- AutoCAD and Revit integrations
- Browser access, training and technical support
Hevacomp was a Windows-based building services design and calculation suite used by mechanical, electrical and public health engineers. It supported a broad range of engineering calculations, compliance workflows and project outputs, but Bentley ended ongoing product support on 1 January 2026.
- Mechanical and electrical building services design
- Heat loss and heat gain calculations
- Heating, cooling and ventilation calculations
- Pipe, duct and public health system sizing
- Energy and compliance-related workflows
- Desktop Windows installation
- Legacy project files and reports
- No ongoing mainstream product development, support or updates
h2x vs Hevacomp comparison table
| Comparison area | h2x | Hevacomp |
|---|---|---|
| Product status and overview | ||
| Product status | Actively developed and supported cloud-based MEP design platform. | Retired product. Bentley ended ongoing support on 1 January 2026. See Bentley's lifecycle policy for information about discontinued software support. |
| Primary purpose and best fit | Connected MEP system design, calculations, automatic sizing and project outputs for engineers, consultants and contractors. | Legacy building services calculation and design suite previously used across mechanical, electrical and public health workflows. |
| MEP design scope | Supports mechanical and public health workflows, including heating, cooling, ventilation, water, drainage, gas, fire and related systems. | Historically supported mechanical, electrical and public health building services workflows. |
| Electrical design | Not currently supported. Electrical functionality is on the product roadmap, but no release date has been announced. | Included electrical design and calculation workflows. |
| Access and workflow | ||
| Platform and access | Accessed through a supported web browser. An internet connection and a device meeting minimum requirements are needed. | Windows desktop software installed locally. |
| Starting from drawings | Users can upload a PDF drawing set, set the scale and trace over it while developing the system layout. | Projects were created within the installed Hevacomp environment using its established desktop workflow. |
| Visual system design | Users lay out connected MEP systems visually while calculations, flows and sizing remain linked to the design. A 3D view helps users review system routes, levels and spatial relationships. | Supported building services modelling and calculations through a more traditional desktop interface. |
| Connected calculations | Calculations such as heat loads, flow rates, pressure drops and system sizing remain connected to the system layout. | Supported engineering calculations, but project changes could involve more manual updating and movement between separate parts of the legacy workflow. |
| Automatic system sizing | Pipes and ducts can be sized automatically using project data, engineering criteria and supported calculation methods. | Supported pipe, duct and plant sizing through its established calculation modules. |
| Design revisions | Changes to routes, components or design inputs can feed into updated calculations and sizing results. | Existing projects can still be edited where installations remain operational, but the product no longer receives workflow improvements or compatibility updates. |
| Collaboration and review | Browser-based project access and sharing support review without every participant installing the desktop application. | Primarily based around locally installed Windows software and legacy file-sharing processes. |
| Calculations and outputs | ||
| Main project outputs | PDF drawing sets, Bills of Materials, calculation reports, sizing reports, and schedules. | Legacy calculation reports, system results, compliance outputs and project documentation, depending on the modules used. |
| AutoCAD and Revit workflow | Designs can be transferred into AutoCAD or Revit using the relevant h2x integrations for further CAD or BIM development. | Offered established export and integration workflows, but these no longer receive ongoing product development or compatibility updates. |
| Existing project import | Hevacomp project files and calculation data cannot be imported directly into h2x. | Existing Hevacomp files may remain accessible through a working installation, but they do not transfer directly into h2x. |
| Adoption, onboarding and pricing | ||
| Ongoing development | Receives active product development, improvements and updated learning resources. | No longer receives ongoing mainstream development or normal product updates. |
| Training and support | Guided demonstrations, onboarding, training resources and technical support are available from the h2x team. | Normal Bentley support for Hevacomp has ended. Existing users must rely on retained knowledge and legacy documentation. |
| Evaluation and pricing | Free project, demonstration and guided-evaluation options are available. Pricing is based on team size and required capabilities. | No longer available as a normally supported product for new long-term adoption. Existing companies may still carry costs associated with legacy infrastructure, retained devices and replacement planning. |
| Long-term suitability | Intended as an actively supported platform for current and future MEP design workflows. | Suitable only as a temporary legacy environment while firms preserve records and complete their replacement plan. |
Note: Hevacomp capabilities varied according to the modules, licences and workflows used by each company. Existing installations may continue to function, but the software is no longer supported or actively developed. Hevacomp information was last checked in August 2026.
Where h2x and Hevacomp differ
The main differences now extend beyond individual features. Hevacomp is an unsupported legacy product, whereas h2x provides an actively developed workflow for connected calculations, system design, project revisions and engineering outputs.
Retired desktop tool vs an active cloud platform
Hevacomp was built around a locally installed Windows workflow and no longer receives ongoing support or product development. h2x operates through a supported web browser and continues to receive new product improvements.
One connected browser-based workflow
h2x brings system layouts, calculations and automatic sizing together within one browser-based project environment. Hevacomp also provided integrated calculation and sizing tools, but these were delivered through its separate legacy desktop apps and modules.
Collaboration and project access
h2x projects can be accessed and reviewed through a browser without every participant maintaining a Hevacomp installation. This makes it easier to share current project information across office, remote and site-based teams.
Rebuilding projects rather than importing files
Hevacomp project files cannot be imported directly into h2x. Teams must retain their important legacy records, upload relevant PDF drawing sets and recreate the required systems using the existing drawings, reports and design information.
What should existing Hevacomp users do?
Remaining on Hevacomp may appear convenient while an existing installation still works, but its unsupported status creates increasing operational risk. The most practical approach is to document current requirements, select replacement workflows and move projects in a controlled way.
Verdict: Hevacomp is no longer a realistic long-term platform because normal support and development have ended. h2x provides a modern replacement for its mechanical and public health design workflows, but teams must plan separately for electrical design and recreate required projects rather than importing Hevacomp files directly.
Why Hevacomp users move to h2x
Hevacomp users need more than another calculation package. They need a supported workflow that connects layouts, calculations, system sizing, revisions and project outputs.
h2x brings those stages together in a browser-based platform, supported by onboarding, training and technical assistance.
Automate heat load calcs
Calculate heating and cooling loads from project geometry, room data and design conditions, with results linked directly to system sizing.
Design complete HVAC systems
Design ductwork and pipework in one connected model, with loads, flow rates, pressure drops and system sizing kept in sync.
Review MEP designs in 3D
Review pipes, ducts and equipment in 3D, identify potential coordination issues and make changes while calculations remain connected.
Results from former Hevacomp users
See how building services teams replaced Hevacomp with h2x, simplified their design workflows and reduced the time required to complete engineering calculations and project outputs.
MEPDesign reduced design time by 50%
After moving from Hevacomp to h2x, MEPDesign brought calculations, system layouts and project outputs into one browser-based workflow. This helped the team reduce design time by 50% on a 50-storey mixed-use tower.
Design24 reduced design time by 75%
After replacing its previous Hevacomp process with h2x, Design24 reduced work on a 66-bed residential care home by six hours, cutting the task time by 75%. Connected design and sizing tools also made revisions easier to manage.
What teams say about h2x
h2x vs Hevacomp frequently asked questions
See how h2x can replace your Hevacomp workflow
Book a demo to see how your mechanical and public health workflows can be recreated in h2x using connected calculations, automatic sizing and professional project outputs.
