Premium Product
Hot Water Generator
The Hot Water Generator® eliminates Legionella risks from stagnant water, biofilm, and sediment. Mains-fed, it removes the need to store large volumes of potable water, while offering exceptional efficiency and compatibility with renewable energy sources.
ABOUT HOT WATER GENERATOR
Fast, Efficient and Safe Hot Water
Unlike traditional storage cylinders, the Hot Water Generator® keeps potable water moving and only heats it when required. This ensures it never sits long enough for bacteria to grow, while delivering consistently safe, hygienic hot water.
The copper heat exchanger’s rippled surface keeps sediment suspended, preventing build-up and stopping biofilm from forming. Because the system stores primary water in a highly insulated thermal store (not potable water), it needs far less capacity than a conventional calorifier, yet can deliver greater volumes of hot water per hour — even at peak demand.
The thermal store design also allows you to capture more heat from renewable sources such as solar thermal or heat pumps, storing energy for later use. This, combined with reduced boiler cycling, can cut energy bills by up to 70%.
Innovative Design for Superior Hot Water Delivery
The Hot Water Generator is a reliable, efficient unit that installs quickly, runs on a single thermostat, and needs minimal upkeep while delivering steady performance with negligible pressure drop. It provides domestic hot water and space heating, only heating what’s required to cut boiler cycling and reduce energy use. Its design naturally limits Legionella and Pseudomonas risk, it’s fully WRAS approved, and the copper heat exchanger is built for long service life and easily replaced when needed. It also integrates cleanly with renewable heat sources for future flexibility.
Key Advantages:
Simple installation with minimal control requirements
Highly efficient operation with reduced boiler cycling
WRAS approved with anti-Legionella and anti-Pseudomonas characteristics
Long-life copper heat exchanger, replaceable for extended value
Why Choose the Hot Water Generator?
The Hot Water Generator’s cutting edge hot water heater and combination boiler will blow your standard commercial calorifier out of the water.

Legionella & Pseudomonas Protection

25 Year Cylinder Warranty

Lower Standing Heat Loss

Rapid Recovery

Saves Floor Space

Instant Hot Water

Lower Running Costs

Integrates with Renewables
Large Volumes of Hot Water Per Hour
As a result, water moves in greater frequency than in traditional hot water storage cylinders, ensuring the hygiene of the water is good as it never stagnates for long periods of time. The rippled effect of the heat exchanger keeps any sediment in the drinking water suspended, so not allowing a Biofilm to form or sediment to accumulate.
The Hot Water Generators® have a smaller storage capacity than conventional calorifiers yet can offer larger volumes of hot water per hour.
Advanced Cylinder Design for Legionella and Pseudomonas Bacteria Control
Copper Industries’ hot water cylinders are engineered to keep water in continual motion, rather than allowing it to stagnate as can occur in traditional storage cylinders. This constant movement maintains the hygiene and quality of the water by preventing conditions in which Legionella or Pseudomonas bacteria can grow.
The Hot Water Generator takes this protection even further. As it contains no stored potable hot water at any point, it offers no environment in which Legionella or Pseudomonas bacteria can thrive. For additional reassurance, all Copper Industries Hot Water Generators are fully WRAS approved, ensuring the safety and reliability of your hot water supply.
Integrates with Renewable Energy
The Hot Water Generator can be integrated with any combination of renewables, such as:

Solar

Wind Turbines

AD Plant

Biomass

Geothermal

Air Source Heat Pump
Built to Fit Your Project
Our Hot Water Generators are fully customisable to suit the specific demands of your installation.
Because every project is different, we size each unit to your exact requirements.
Get in touch and we’ll advise on the right configuration for your system.
Why Choose Mild Steel?
Mild steel is one of the most widely recycled and reused materials in the world, with over 90% of structural steel being recovered and repurposed at the end of its life. Its production process has become increasingly efficient, with modern recycling methods significantly reducing energy consumption and carbon emissions compared to the extraction of virgin ore — making mild steel a sustainable and responsible choice for manufacturing and construction.
Mild steel is renowned for its strength, versatility, and longevity. It delivers dependable performance across a vast range of applications, from storage tanks to structural frameworks, and can be easily formed, welded, and maintained. Its proven reliability over generations makes it a trusted and cost-effective material for both industrial and domestic use.