Azanefreezer 2.0
Low charge, air-cooled packaged units
from 100 kW to 650 kW and temperatures from
-18°C to -40°C
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Azanefreezer 2.0 is a state of the art, plug-and-play, low-charge ammonia refrigeration system designed for optimal efficiency and environmental sustainability. The simple packaged solution ensures quick installation and reduced on-site commissioning time, making it a cost-effective and reliable choice.


Unparalleled Efficiency
Energy performance data analysis for the Azanefreezer at recent installations indicates its annual energy usage is one-third of that of the UK’s ‘Best Practice’ guidelines and a quarter of that of the European industry average.

The Azanefreezer 2.0 Advantages
Azanefreezer 2.0 consistently exceeds the UK ‘Best Practice’ energy performance standards, achieving energy savings of up to 66%
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Plug & Play
The Azanefreezer 2.0 is designed to redefine standards in industrial refrigeration.
The plug-and-play, low charge ammonia refrigeration system is engineered to integrate seamlessly into both new builds and retrofit projects without the need for a dedicated plant room. This groundbreaking design significantly simplifies installation, reduces costs, and minimises spatial constraints, whilst offering unparalleled flexibility and efficiency.

Compact and cost efficient
Unlike traditional systems that require large, centralised machinery rooms, Azanefreezer factory-built design can be positioned directly at the point of cooling demand. This proximity not only reduces installation and operational costs by eliminating the need for extensive pipework and the associated energy loss but also enhances the overall efficiency of the refrigeration process.

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Low-charge design
Azanefreezer 2.0 ensures minimal ammonia usage,combining safety with environmental responsibility,making it an ideal choice for businesses looking to reduce their carbon footprint. This avoids the need for complex valve stations and removes the requirement
for leak detection and ventilation, minimising health and safety concerns.

A sustainable alternative to F-gases
As the world moves away from fluorinated gases (F-gases) due to their high global warming potential,Azanefreezer2.0 presents a timely solution. Utilising ammonia, a natural refrigerant with zero GWP, our systems offer a robust alternative to F-gases which are currently being phased out under the F-gas Regulation.
Azanefreezer Applications

Spiral Freezer

Cold Storage

In-Line Freezer
Low power consumption and enhanced airflow efficiency. EC condenser fans and automatic floating head pressure control for improved efficiency
Outdoor-ready, self-contained unit – no plant room needed.
Robust PIR insulation with alu-zinc cladding.
Fast and effective defrosting using a four-way valve (optional). Integrated reverse cycle defrost system melts frost directly from the inside out, ensuring fast, effective and efficient defrost.
Delivers efficient overfeed operation without pumps. Low pressure receiver allows fully wetted evaporators; eliminating wasteful superheat and optimising heat transfer.
Economized screw compressors with high efficiency and redundancy.
Allow easy maintenance access around the unit.
Fully galvanized construction ensures rigidity and long life.
Stainless steel panel with starters for package and coolers.
In-house controls for optimised system performance. Includes PLC, HMI touchscreen, and remote monitoring options.
Integrated condenser eliminates water use and chemical treatments.
*Award winning ETHOS energy optimisation hardware pre-installed
Ready to future proof your business operations?
Cut costs. Reliable choice. Boost performance
Azanefreezer 2.0 is an environmentally responsible choice for companies looking to align with ISO 14001 standards.
Star’s design engineering team selected the latest and most advanced components from the world’s top manufacturers to ensure each Azanefreezer system is custom-built for maximum energy efficiency and performance.
Benefits
- Quick installation
- No plantroom required
- Low installation costs
- Low maintenance costs
- No ongoing water, effluent and water treatment costs
- High efficiency control including floating head pressure control and EC condenser fans
- Low total cost of ownership (TCO)
- Very low charge of ammonia – as low as 0.52kg/kW;up to 96% lower than equivalent pumped recirculation
- Easy relocation should the need arise
The Azanefreezer 2.0 comes Ethos ready to help plant owners achieve energy and carbon reduction targets. The award-winning data monitoring and plant performance optimisation system can be activated at any time for optimum efficiency throughout the plant’s life.

Ethos combines the expert knowledge of our team with advanced AI, digital twin technology and bespoke algorithms to gain deeper insights into system performance.
By harnessing real-time data, Ethos helps organisations to achieve ambitious Net Zero goals while reducing energy costs.

Ethos technology continuously learns, adapts, and configures millions of data points in seconds rather than months to locate hidden inefficiencies and predict operational issues before they occur.
Designed and manufactured in the UK



Featured Projects
From large-scale frozen food storage to complex temperature-controlled logistics, our latest case study with Lineage Logistics showcases the Azanefreezer 2.0’s exceptional performance, energy efficiency, and compliance with F-Gas regulations.






Exclusive first look at Star Refrigeration’s latest Azanefreezer 2.0
To book an exclusive visit to our factory in Westway, Glasgow and run test the Azanefreezer 2.0 currently in production, call us on +44 141 6387916 or email us aprado@star-ref.co.uk
To learn more about the EcoDesign Directive, which is enacted in UK law via the Ecodesign for Energy Related Products Regulations, click on CPD Certified Crash Course and email us at cpdcertificate@star-ref.co.uk to get your CPD Certified Diploma.
For a comparison between the Azanefreezer 2.0 vs the European EcoDesign Directive’s Minimum Energy Efficiency Requirements (MEPS) click here
For Information on our US Azanefreezer, visit www.azane-inc.com





