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Heat with AMONUM

AMONUM is versatile. The model can be used for brine applications down to -21 degrees Celsius as well as for process cooling and climate control up to +16 degrees Celsius; heat recovery is feasible up to a condensation temperature of 53 degrees Celsius. This wide range makes the AMONUM an ideal choice, particularly for the food production and chemicals sector.

The advantages of the AMONUM at a glance

Compact and flexible
suitable for many applications
Absolutely eco-friendly
thanks to the natural refrigerant ammonia with excellent thermodynamic properties
Time-tested safety concept
coupled with a compact design for any non-public machine room
Efficient with regard to price
due to low installation costs and uncomplicated set-up
Excellent serviceability
with easy-to-remove cladding elements for easy accessibility

‘With our AMONUM, users receive an all-round carefree package: the chiller is compact and therefore flexible in application, eco-friendly and very safe.’

Bernd Heine, Head of Application Management at ENGIE Refrigeration

AMONUM: safety and maximum efficiency

As experts, we at ENGIE Refrigeration naturally only ever rely on the very best. That is why the AMONUM is in operation at our head office.

With a heat recovery of up to +53 degrees Celsius, the excellent thermodynamic properties of ammonia as a refrigerant and our time-tested safety concept, the AMONUM is the perfect choice – for us, too.

What that means for you: when you buy the AMONUM, you are buying a machine that meets many different requirements with a wide range of operating temperatures. Especially the chemicals industry, the food production sector, the manufacturing industry and office buildings – as our example shows – benefit from the performance of this all-rounder.

You would like an ‘all-round carefree package’? Then the AMONUM is exactly the right chiller for you. With a low refrigerant filling capacity of less than 10 kilograms, the model can be set up universally outside and inside. Its compact housing and sophisticated time-tested safety concept ensure maximum reliability.

Would you like to learn more about using the AMONUM as a chiller? Find more information here!

Optimal energy efficiency is of course assured, as it is with all our machines. A speed-controlled piston compressor combined with cylinder bench shut-off ensures ideal power adjustment to the required operating temperature requirements.

The SIMATIC S7 PLC ensures optimal energy efficiency. Of course the AMONUM series is smart grid-capable.

The highlights of the AMONUM in detail:

  • Water-cooled liquid chiller
  • Compact design in closed housing
  • Especially maintenance-friendly because trim parts are easy to remove
  • Suitable for installation indoors and outdoors
  • Available at four capacity levels
  • Speed-controlled open piston compressor combined with cylinder bench switch-off
  • Refrigerant ammonia (NH3)
  • Refrigerant charge < 10 kg
  • Plate heat exchanger
  • Oil and liquid separator
  • Electronic expansion valve
  • Control system with S7 touch panel
  • All electronic components integrated in the switch cabinet
  • Switch cabinet hermetically separated from system section (air-tight)

Its compact and intelligent design makes the AMONUM chiller suitable for many different on-site requirements.

All the different performance versions have the same housing size: with a footprint of just 2.5 square metres, the AMONUM can be positioned flexibly. In its standard version IP54, the model is already weatherproof and suitable for outdoor installation.

The electrical cabinet is completely integrated in the housing. That means a smaller footprint, so you can conserve your available space.

Using ammonia as a refrigerant is very important: it does not damage the ozone layer, it does not contribute to global warming, it is cheap, and it has a high specific refrigeration capacity. Due to its smart design, our AMONUM chiller is of course absolutely safe. This is what modern and sustainable refrigeration looks like.

The refrigerant filling capacity is less than ten kilograms and thus conserves important operating materials – while providing maximum energy efficiency.

The benefits of ammonia as a refrigerant:

  • Climate-neutral
  • Low cost
  • High availability
  • Low energy demand for refrigeration
  • Low operating costs
  • High specific refrigeration capacity
  • Can be located immediately due to characteristic odour


We value maximum safety – including when we use ammonia as a refrigerant. Ammonia systems may only be operated by trained personnel. We at ENGIE Refrigeration provide support to you as an operating company in the form of qualified training courses.

AMONUM offers perfect serviceability. All panels can be removed, and all components are easily accessible for service and maintenance work. This saves time and therefore maintenance costs. Due to the use of multiple shut-off valves in the refrigerant circuit, the AMONUM is easy to fill and empty.

Its modular design makes it possible to retrofit additional equipment and further options at any time.

Would you like to learn more about heat with AMONUM or talk to us directly about various options?

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