Cooling Load Calculation Software

h2x's Cooling Load Calculation Software equips engineers with accurate calculations to enhance thermal efficiency in building designs.

You can use h2x's cooling loads tool to drive efficiency and accuracy in your calculations for heat gain and chilled water system designs.

Simplify your projects and elevate energy performance effortlessly through our advanced tool.

Cooling Load Calculation Software

Cooling Load Calculations



Construction Materials

Building Year

Internal Heat Sources


Solar Gain










Equipment Sizes

Recirculation Pump Sizes

Pipe Sizes

System Volume

Index Circuit Length



PDF with Logo

Bill Of Materials

Heat Gain Report



Importance for Cooling Load Calculation Software

A cooling load calculation tool is essential in achieving energy-efficient and comfortable commercial buildings and residential buildings environments by accurately assessing heat gain.


This software aids in optimising cooling systems, promoting comfort and energy conservation. A correctly sized chilled water system minimises energy costs, reducing waste and environmental impact.


Additionally, these calculations are crucial for compliance with building codes and regulations, making heat gain calculation programs a step towards sustainability anf cost-effectiveness.


It's a valuable asset for HVAC engineers and designers (Heating, Ventilation, and Air Conditioning), ensuring appropriate system sizing to prevent short-cycling and extend system lifespan.

Comparison With Other Heat Gain Software

This calculation software for heat gain distinguishes itself with its user-friendly design and visual capabilities.


Unlike many other programs, it offers a unique and engaging visual approach, allowing you to see the building and its gain of heat. This helps to make complex equations more comprehensible and understandable.


h2x is verified by CIBSE (The Chartered Institution of Building Services Engineers), underscoring its precision and reliability. Moreover, the software excels in flexibility.


Once the heat gain calculation is completed, it offers various export options. These range from simple PDFs for easy sharing and presentation to more thorough exports like bills of materials and detailed calculation reports.


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

The Features Of h2x's Cooling Load Calculation Software

Use Real Products Icon

Room by Room Heat Gain

Based on CIBSE defaults.

Standardise Outcomes Icon

Pipe Sizing

Automated based on your heat gain.

Increase Productivity Icon

Recirculation Pump Sizing

Automated based on your layout.

Redesign Instantly Icon

Equipment 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.

Real-World Applications

Calculation software for heat gain plays a pivotal role in both new building construction and renovation projects.


In the design phase, it aids architects and engineers in assessing heating load and cooling requirements, ensuring the selection of appropriate HVAC equipment for energy-efficient and comfortable spaces.


This software is equally valuable during building modifications, facilitating HVAC systems reassessment and guiding necessary upgrades.


Energy auditors and consultants benefit from it to pinpoint heat gain areas and propose enhancements, resulting in significant energy savings and improved occupant comfort.


In regions with energy performance regulations, calculation software for heat gain helps demonstrate compliance. Additionally, it serves as an educational resource for aspiring architects, engineers, and HVAC professionals, imparting vital knowledge on essential concepts like energy conservation and efficient building design.

Cooling Load Calculation Software


h2x is a robust and intuitive tool that incorporates a holistic visual approach, simplifying the comprehension of intricate formulas.


It excels in delivering meticulous and precise calculations, validated by The Chartered Institution of Building Services Engineers (CIBSE), guaranteeing credibility and accuracy.


Moreover, its capacity to offer diverse export choices, such as PDFs, bills of custom materials, and calculation reports, enhances its adaptability, establishing it as an invaluable asset for project planning and execution.


To sum up, h2x stands as a flexible and trustworthy solution for professionals seeking to optimise HVAC system sizing, attain energy efficiency, and ensure building comfort.

Related Pages

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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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Get Started with h2x Today!

1:1 Training: Become part of our community - each h2x package includes personalised training and we even run tutorials using your own projects to get you up and running quickly.


Walkthroughs: With access to over 150 short, feature-specific videos embedded within h2x, you'll master our tool in no time.


Assistance: Rated 4.9/5 for customer support - exceptional support is our promise. Our integrated help button connects you to real engineers ready to assist with any design query, large or small.