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
Meeting the Future with the New Build Heat Standard: Scotland’s Blueprint for Energy-Efficient Homes
Learn all about Scotland's New Build Heat Standard: mandating energy-efficient homes with heat pumps. Embracing a greener...
Exploring Hydronic Design Software with h2x Engineering
Dive into hydronic design software with h2x! Understand the formula, optimise performance, revolutionise HVAC design, and more.
How to Calculate Duct Size for HVAC Systems
Learn how to calculate duct size from airflow, velocity and friction rate, with a worked example for...
Cascade Heat Pumps: Redefining Heating for Large Spaces
Discover the innovation of cascade heat pumps in our blog below! See how they redefine heating for...
How To Calculate Air Velocity In A Duct
Learn how to accurately calculate air velocity in ducts for HVAC systems. Get essential tips and techniques...
The Power and Potential of Hybrid Heat Pumps
Discover the transformative potential of hybrid heat pumps! Learn how they enhance home comfort, efficiency, and sustainability...
Maximising Efficiency: The Guide to Heating Degree Days for Heating Engineers
Discover how to maximise efficiency with Heating Degree Days for Engineers. Learn valuable insights to optimise heating...
The Deakin University and HCAA Peak Flow Rate Calculation Method
Discover the efficiency of the Deakin University and HCAA hydraulic method for peak flow rate calculation.
A Guide To Air Duct Pressure Drop Calculation For Optimal HVAC Performance
Discover the science behind efficient HVAC systems! Explore h2x Engineering's insightful blog on Air Duct Pressure Drop...
How To Calculate Water Demand
Learn how to calculate the water demand in a system based on the local standard's requirements and...
Understanding Mixing Valves, Tempering Valves, and TMVs
Step into the realm of plumbing valves and find out everything you need to know about mixing...
Cooling Load Calculation: Complete Guide with Worked Examples
In the realm of mechanical engineering, understanding cooling load calculations is paramount. Whether you're a seasoned engineer...
Featured (Must-Read Blogs)
How to Calculate Duct Size for HVAC Systems
Learn how to calculate duct size from airflow, velocity and friction rate, with a worked example for...
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 using U-values, surface areas, temperature differences, ventilation and thermal bridging.
Darcy-Weisbach Equation vs Hazen-Williams for Pipe Friction Loss
Compare the Darcy-Weisbach equation and Hazen-Williams formula, when to use each and how they calculate pipe friction...
How to Size Water Pipes
To size water pipes correctly is critical for the performance of your design. Below, we will explore...
How to Calculate Residual and Static Water Pressure
Learn the difference between residual and static water pressure, how to calculate both through a plumbing system,...
Highlights (Free Downloads)
Duct Sizing Chart for CFM, Velocity and Friction Rate
A duct sizing chart for round and rectangular ducts, showing airflow capacity and velocity at common friction...
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...