H2X Tools

CIBSE Verified Calculation Software

h2x's design software has received the CIBSE Software Verification Assessment for their Heating and Cooling Water Systems, their Domestic Water Services Calculations, and their Air (Ventilation) Systems.

Heating and Cooling Water Systems

CIBSE SVA Heating Cooling Water Systems

Domestic Water Systems

CIBSE SVA Domestic Water Systems

Air (Ventilation) Systems

CIBSE SVA Air Ventilation Systems
cibse calculation software

Industry-Leading Accuracy

Since h2x was launched, engineers around the world have used our calculation software to achieve detailed and accurate calculation results.

After receiving CIBSE's Software Verification Assessment, our users now have confidence that the calculations being undertaken in h2x are at an industry-leading level of quality.

This means that users of h2x not only provide their clients with compliant and accurate designs, but they are able to do it in a more efficient timeline.

What is CIBSE?

The Chartered Institute of Building Services Engineers (CIBSE), is an independent body and global leader in all things building services.

CIBSE invest in education and research to support built environment professionals in their pursuit of excellence.

Recognising the switch towards digital calculation methods CIBSE now offers the SVA service to provide independent testing of software systems used for specific design functions.

What does the SVA Include?

The Heating and Cooling Water Systems + Domestic Water Services test covers both Hot and Cold services and tests a comprehensive range of design scenarios to verify the following calculation results:

Peak Flow Rates

Pipe Sizing

Pipe Pressure Loss

Fitting Pressure Loss​​​​​​​​​​


CIBSE was founded in the UK in 1976 and now has over 20,000 members across 100 countries.

How Does h2x Improve Your Quality Control Process?

If your team experience any of the problems listed below, h2x offers a solution for you.

Using Spreadsheets

Team members use different spreadsheets

The spreadsheets your team use are unverified

Your team spend a lot of time​​​​​​ inputting the information

You are concerned about the risk of human error

H2X provides a uniform calculation method, ensuring consistent outcomes across the team.

H2X water services calculations are verified by CIBSE

H2X is proven to reduce design & calculation time by up to 72%

Design warnings prevent mistakes from happening

Design Changes
Review Process

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.