Size Your MEP Systems in Minutes, Not Days
h2x calculates as you design, so when the layout changes, your calcs update with it.
Trusted by Industry Leaders
What you can design in h2x:
HVAC
Load calcs, heating, cooling, ventilation...
Plumbing
Domestic water, gas, drainage...
Fire
Sprinklers, hydrants, hose stations / reels...
More Products
Browse other h2x features and exports...
What you can design in h2x:
HVAC
Load calcs, heating, cooling, ventilation...
Plumbing
Domestic water, gas, drainage...
Fire
Sprinklers, hydrants, hose stations / reels...
More Products
Browse other h2x features and exports...
Built for:
Consultants
Compliance and accuracy.
Contractors
Speed up project timelines.
Manufacturers
Get your products specified.
Loved by Engineers
How engineering teams use h2x in practice
Engineering consultancies use h2x software for accurate calculations, to reduce design risk, and to improve internal review workflows. Leon's team is just one example.
Why engineers choose h2x
Built by Engineers, for Engineers
After a pipe burst on site, we built the software platform that would have prevented it. h2x exists to help engineers design without second-guessing their calculations.
★ ★ ★ ★ ★
Customer focused, easy to communicate with, and invested in my success! The team go above and beyond.
Joshua Musgrove
Director at Eco-Nexus
Easy to Learn
h2x is backed by live group training sessions, 150+ video resources, ongoing project reviews, and a dedicated team ready to get you onboarded quickly. Plus, enjoy 24/7 support and live demonstrations to help you hit the ground running.
★ ★ ★ ★ ★
I've recently started using h2x and it's probably the most user-friendly software I've ever used.
Jamie Donaldson
Construction Manager
What Makes h2x Special
h2x is built to reflect how real engineering teams work. Instead of isolated calculations or rigid templates, it combines standards-led configuration, transparent calculations, and connected design tools into a single, consistent workflow.
Custom Settings
Define your own standards and system parameters.
Accurate Calculations
Calculate precise sizes for your whole engineering system.
Intuitive Design Tools
Speed up the drawing process with our smart design tools.
Product Database
Access manufacturer-verified data for specifications.
Automated Estimating
Generate detailed material lists and cost estimates.
Drawing Exports
Export designs to PDF or integrate with CAD/Revit.
Try designing in our software
Design a mechanical, plumbing or fire system in h2x below and experience just how easy it is:
We're here to help!
Free Trial and Demonstrations
Live Training Sessions
150+ Video Resources
Free Learning Tools
24/7 Instant Support
Engineering principles that guide h2x
h2x is built around a set of core engineering principles that ensure every design is accurate. Learn about the core calculations and methodologies our software uses through these detailed technical guides:
Mechanical
Read about what heat loss is, why it's important, how heat losses occur, and most importantly, how you can calculate it simply and easily.
Plumbing
See why pipe sizing matters, what issues poor sizing causes, how to avoid them, and most importantly, how to size pipes step by step.
HVAC
Learn what duct sizing is, why it matters, how airflow is affected, and most importantly, how to calculate it quickly and accurately.