Heat Loss Calculation Software

h2x's Heat Loss Calculation Software empowers engineers with precise calculations for optimising thermal efficiency in building designs.

You can use h2x's MCS-aligned heat loss tool to drive efficiency and accuracy in your calculations for heat loss and heating system designs.

Streamline your projects and enhance energy performance with ease using our advanced tool.

Heat Loss Calculation Software

Heat Loss Calculations




Building Year

Thermal Bridging







Floors / Roofs



Heat Emitter Sizes

Pipe Sizes

Heat Pump Size

System Volume



PDF with Logo

Bill Of Materials

Heat Loss Report

Importance for Loss Of Heat Engineer Software

An essential tool for achieving energy efficiency and comfort in building environments, our calculation program accurately measures heat loss. This software is instrumental in designing or adjusting heating systems to operate at their peak efficiency.


This is beneficial for maintaining comfortable temperature levels and important for energy conservation. A correctly sized system minimises energy costs, reducing wastage and the associated environmental impact.


Moreover, these formulas are key to adhering to specific building codes or regulatory requirements. Therefore, using calculation programs for heat loss is a step towards both cost-efficiency and sustainability.


It's a valuable tool for HVAC engineers and designers, ensuring proper system sizing that prevents short-cycling and increased wear and tear, prolonging the system's lifespan.

Comparison With Other Heating Engineer Software

This calculation software for heat loss stands apart due to its intuitive interface and visual capabilities, making it exceptionally user-friendly.


Unlike many other software, it offers a comprehensive visual approach, allowing you to see the building and its loss of heat uniquely and engagingly. This helps to make complex equations more comprehensible and easier to interpret.


Furthermore, this software is meticulously aligned with MCS (Microgeneration Certification Scheme), enhancing its credibility and reliability. It provides detailed and accurate calculations, ensuring optimal sizing of the entire heating system.


This is verified by CIBSE (The Chartered Institution of Building Services Engineers), further emphasising its precision and trustworthiness. In addition, the software's exceptional flexibility stands out.


Upon completing the heat loss calculation, it can provide a wide range of export options. These range from straightforward PDFs for easy sharing and presentation, to more detailed exports like bills of materials and comprehensive calculation reports.


These features make this calculation software on loss of heat a powerful tool for precise calculation and a versatile companion for project planning and execution.

The Features Of h2x's Heat Loss Software

Use Real Products Icon

Room by Room Heat Loss

Based on MCS guidelines.

Standardise Outcomes Icon

Pipe Sizing

Automated based on your heat loss.

Increase Productivity Icon

Recirculation Pump Sizing

Automated based on your layout.

Redesign Instantly Icon

Heat Pump Sizing

Automated based on what is connected.

Design Warnings Icon


Branded with your logo.

Improved Quality Assurance Icon

Bill of Materials

Detailed list of components.

How This Calculation Is Used In Real World Applications

Calculation software for heat loss is extensively used in new building construction and renovation projects.


During the design stage, it assists architects and engineers in determining the heating and cooling needs, ensuring the selection of the right HVAC equipment, thereby creating comfortable, energy-efficient spaces.


The software is also instrumental when buildings undergo modifications, helping to reevaluate what HVAC require and guiding any necessary upgrades.


Moreover, the software is invaluable to energy auditors and consultants, who utilise it to identify heat loss areas within a structure and propose improvements. These audits often result in significant energy savings and heightened comfort for occupants.


In regions where energy performance is legally regulated, calculation software for heat loss helps demonstrate compliance. Additionally, it serves as an educational tool for future architects, engineers, and HVAC professionals, shedding light on essential concepts like energy conservation and efficient building design.

Heat Loss Calculation Software


h2x represents a powerful, user-friendly tool that integrates a comprehensive visual approach, making complex formulas easier to interpret.


It stands out for its detailed and accurate estimations, aligning with the Microgeneration Certification Scheme (MCS) and verifying through The Chartered Institution of Building Services Engineers (CIBSE), thus ensuring its credibility and precision.


Furthermore, its ability to provide various export options, including PDFs, bills of materials, and calculation reports, adds to its flexibility, making it an excellent companion for project planning and execution.


In conclusion, h2x is a versatile and reliable choice for professionals seeking to optimise HVAC system sizing, achieve energy efficiency, and ensure building comfort.

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Frequently Asked Questions

Greengate, UK

"I would estimate over the length of this project, I have spent 50% less time designing than I would on our previous software.

The ability to output the design straight into Revit assisted clash detection and coordination."

Greengate, UK

"I would estimate over the length of this project, I have spent 50% less time designing than I would on our previous software.

The ability to output the design straight into Revit assisted clash detection and coordination."

Award-Winning Heating Design

"Using h2x was pivotal, allowing for precise heat loss calculations, pipe sizing and flow rates for each room.

This level of detail ensured that the heating load accurately matched each space's requirements, minimising energy waste and maximising comfort.

The strategic placement of heat pumps and careful sizing of pipework were crucial in maintaining minimal pressure drops over an 18-metre distance."

Greengate, UK

"I would estimate over the length of this project, I have spent 50% less time designing than I would on our previous software.

The ability to output the design straight into Revit assisted clash detection and coordination."

Salon Republic, USA

"The quality of the designs saw significant improvement with the adoption of h2x."

"The software offers precision through detailed result outputs and advanced options for efficient pipe sizing, allowing heating engineers to optimise based on parameters like maximum velocity and pressure drop."


What Installers Say

What Consultants Say

A game changer for the humble plumber. Incredible.

Brad Winkel

Director at Queenstown Plumbing

Brilliant, simple and easy to use. Game changer.

James Major

Director at Hubb

Big time game changer to the industry!

Viv Jude

Director at UHC

Incredible software! Super user-friendly and allows you to save so much time.

Devni Gamage

Engineer at DMA

h2x is great software, our company use it nearly every day. It is easy to use with direct conversion from h2x to Revit.

Callum Craig

Engineer at WDE

h2x is fantastic software. It is very easy to use and the ability to output to Revit is a fantastic time saver.

Joe Kirrane

Engineer at MEP


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