The h2x Blog
We publish practical guides, top tips and trends, latest news, and more stories related to the mechanical, plumbing and fire industry.
Latest Articles
Calculating Heating and Cooling Loads: What’s the Difference?
Calculating heating and cooling loads requires understanding two opposite problems: heat gain in summer and heat loss...
How to Reduce Heat Pump Lifecycle Cost in Cold Climates
While initially expensive, air-to-water heat pumps deliver the lowest total lifecycle cost of any heating option for...
Why Water Wins: The Thermodynamic Case for Air-to-Water Heat Pumps
Learn why air-to-water heat pumps use water to move heat more efficiently than many conventional HVAC systems.
Why Revit Falls Short for Design Engineers
Revit handles modelling and documentation well, but design engineers still need better calculation tools.
Internal Heat Gain: A Practical Guide for HVAC & Building Services Engineers
Everything you need to know about internal heat gain in your engineering designs — from occupants, lighting,...
Design-Build Contracts: Advantages, Risks & How HVAC Contractors Can Win Bigger
Design-build contracts can improve margin and control, but they also increase liability. Here's how smart contractors reduce...
What Is the Revit Tax? How Autodesk’s BIM Platform is Eating Your MEP Margins
The hidden MEP workflow cost that's eating your profit, and how to get it back.
Radiant Floor Heating (UFH) Design Software: 5 New Features In h2x
New features from h2x enable simplified, fast radiant floor (underfloor) heating design with custom flexibility.
Choosing the Right Design Software for Radiant Floor (Underfloor) Heating Systems
h2x vs LoopCAD: See why engineers are switching to cloud-based radiant floor/underfloor heating design software for 2x...
The Thermodynamics of Comfort: Why Radiant Floor & Underfloor Heating is Superior
Radiant Floor (Underfloor) Heating is sometimes thought of as a luxury add-on, but it can deliver so...
You Were Hired to Deliver BIM. Revit Alone Won’t Get You There.
Why the path to true MEP information modeling runs alongside Revit — not deeper into it.
h2x: The Smartest Hevacomp Replacement for Design Engineers
With Hevacomp reaching end of life on January 1st, 2026, building services and MEP engineers need a...
Featured (Must-Read Blogs)
How To Calculate Duct Size: A Comprehensive Guide
Learn how to calculate duct size effectively with h2x's comprehensive guide below. Improve airflow and efficiency within...
What Are Cv and Kv? Flow Coefficient Formulas & Valve Sizing Explained
Learn how flow coefficient (Cv) impacts valve sizing. Explore their calculation, importance in fluid dynamics, applications, and...
Calculating Heat Loss: A Step-by-Step Guide
Learn how to calculate heat loss for HVAC system design.
Hazen-Williams vs. Darcy-Weisbach
The Hazen-Williams and Darcy-Weisbach equations have their merits and limitations, mainly relating to their ease of use...
How to Size Water Pipes
To size water pipes correctly is critical for the performance of your design. Below, we will explore...
The Importance of Calculating Residual & Static Pressure
Water pressure is an essential aspect of every plumbing system. Here, we explain the importance of calculating...
Highlights (Free Downloads)
Ductulator Chart: Practical Guide for Mechanical Engineers (Free Download)
Duct size directly affects noise, energy, and layout, which is why you should use the Ductulator Chart...
FREE Pipe Volume Spreadsheet
Access h2x's free pipe volume spreadsheet to streamline calculations, optimise design, and enhance efficiency in piping projects.
Hardy Cross Method – Sizing a Ring Main (FREE Spreadsheet)
Flow rate and friction loss in a pipe network system can be difficult to calculate. When the...