Top performance, minimum footprint
GEA RedAstrum
As demand for efficient heating rises, GEA RedAstrum is the standard ammonia screw compressor heat pump meeting that demand across a variety of applications. Known for its wide capacity range as well as its high temperature lift, it features high-end components and a sophisticated, compact design.
Looking for our RedAstrum heat pump compliant with North American codes and standards?
GEA RedAstrum Heat Pump – our multipurpose ammonia heat pump
Designed to perform efficiently to a multitude of purposes, the GEA RedAstrum heat pump range is aligned to the successful GEA BluAstrum concept and equipped with heat exchangers that can be configured and optimized according to each project’s requirements. Its tried and tested components deliver state-of-the-art performances as complete heat pump or refrigeration systems for medium heating, refrigeration and/or air conditioning capacities in various fields of application:
- Hot water or fluid for industrial heating processes
- Combined cooling or air-conditioning and heating applications in industries or communities
- Facility and district heating
- Cooling and refrigeration with heat recovery
GEA RedAstrum Ammonia Screw Compressor Heat Pump – Top performance, minimum footprint
Our second generation of ammonia screw compressor heat pumps features optimized design, a new ammonia cascade evaporator option and an extended model range: GEA RedAstrum heat pumps are available in seven screw compressor types based on the successful GEA Grasso M and GEA Grasso LT series in a specific high-pressure design.
Combining the benefits of reliability, low ammonia charges, and minimum footprint, GEA RedAstrum heat pumps offer flexible and efficient performance for a variety of purposes. Designed in a modular fashion, they are comprised of the following main modules:
- Screw compressor package in high pressure design
- Heat exchanger subassembly with integrated liquid separator and de-oiling system
- Low-voltage installation with frequency inverter and control
The components are arranged to ensure the most compact heat pump design possible. Every GEA RedAstrum heat pump is manufactured and delivered according to technical specifications, making it possible for us to offer optional design variants based on the standard modules. The heat exchangers are designed according to the parameters of a project, with a view to maximum energy efficiency on the evaporator and the condenser side. GEA RedAstrum ammonia screw compressor heat pumps are delivered ready for connection, fully piped, and wired.
Highlights and technical features
The GEA RedAstrum heat pump offers maximum efficiency in transferring heat to a liquid heat carrier, providing industrial applications and local or district heating networks with supply temperatures between +55 and +80°C / +131 and +176°F – higher temperatures being available on request. The GEA RedAstrum’s wide temperature range enables it to use heat from waste, ground, or surface water between -10 and +50°C / +14 and +122°F or even secondary refrigerants for combined cooling and heating applications. Alternatively, it can be equipped with a cascade evaporator charged with hot ammonia gas directly from a refrigeration plant – using the wide temperature range for maximally efficient waste heat recovery.
The GEA RedAstrum offers a wide capacity range from approximately 750 to 2.900 kW / 2,559 to 9,895 MBH. Additional features include:
- High efficiency and low energy consumption
- Future-proof with the natural refrigerant ammonia (R717) – in accordance with the F-gas regulation, the initiative for the prohibition of F-gases
- Fully welded shell & plate heat exchanger
- Various plate materials available, all common liquids supported
- Efficiency-optimized configuration with minimized energy costs and CO2 emissions
- Minimum footprint, comes in one piece
- Unit ready for connection, easy installation, minimum maintenance
- Stepless capacity control via frequency inverter (variable speed range 1,500 – 3,600 rpm, R models with 3,300 rpm max. speed) and slide system
- Industry-leading controller technology with GEA Omni
Learn more with GEA RTSelect – our product selection and configuration tool.
Compact exterior, maximum efficiency: The GEA RedAstrum heat pump
As one of the largest systems suppliers to industrial pharmaceutical, food, and beverage producers worldwide, GEA has been delivering innovative technology and services to customers since 1881. We are committed to making responsible, sustainable production possible across industrial sectors, setting the highest standards for our systems solutions.
Whether you’re looking to generate heat for industrial processes or district heating or to cost-effectively reclaim waste heat, the GEA RedAstrum delivers as the all-round screw compressor heat pump, providing energy-efficient performances across industries and applications. Our commitment to our customers runs deep – we strive to tailor solutions to your needs and ensure high performance and long-lasting reliability of your systems. Contact us to learn more about the GEA RedAstrum ammonia screw compressor heat pump!
GEA RedAstrum
| Type | Heat
carrier (°C) | Sec. refri-
gerant (°C) | Heating
capacity (kW) | Cooling
capacity (kW) | COP 1) |
| inlet/outlet | at 3600 min-1 (R_ types 3300 min-1) | line | |||
| RedAstrum EC | +40/+70
+70/+80 | +40/+35
+40/+35 | 745
650 | 620
490 | 5.36
3.63 |
| RedAstrum ED | +40/+70
+70/+80 | +40/+35
+40/+35 | 880
780 | 730
590 | 5.42
3.68 |
| RedAstrum HE | +40/+70
+70/+80 | +40/+35
+40/+35 | 1095
985 | 915
745 | 5.51
3.71 |
| RedAstrum HG | +40/+70
+70/+80 | +40/+35
+40/+35 | 1300
1160 | 1095
885 | 5.78
3.84 |
| RedAstrum MH | +40/+70
+70/+80 | +40/+35
+40/+35 | 1690
1515 | 1420
1160 | 5.70
3.90 |
| RedAstrum ML | +40/+70
+70/+80 | +40/+35
+40/+35 | 1940
1740 | 1640
1335 | 5.89
3.95 |
| RedAstrum RM | +40/+70
+70/+80 | +40/+35
+40/+35 | 2380
2175 | 1990
1690 | 5.60
4.10 |
| RedAstrum RN | +40/+70
+70/+80 | +40/+35
+40/+35 | 2910
2660 | 2435
2060 | 5.64
4.12 |
| RedAstrum EE | +40/+65 | +12/+6 | 745 | 620 | 5.36 |
| RedAstrum GG | +40/+65 | +12/+6 | 650 | 490 | 3.63 |
| RedAstrum HH | +40/+65 | +12/+6 | 880 | 730 | 5.42 |
| RedAstrum LL | +40/+65 | +12/+6 | 780 | 590 | 3.68 |
| RedAstrum MM | +40/+65 | +12/+6 | 1095 | 915 | 5.51 |
| RedAstrum NN | +40/+65 | +12/+6 | 985 | 745 | 3.71 |
| RedAstrum RR | +40/+65 | +12/+6 | 1300 | 1095 | 5.78 |
GEA RedAstrum
| Type | Heat
carrier (°C) | Evaporation
(°C) | Heating
capacity(kW) | Cooling
capacity (kW) | COP 1) |
| inlet/outlet | at 3600 min-1 (R_ types 3300 min-1) | line | |||
| RedAstrum EC | +40/+70
+70/+80 | 33,1
33,4 | 740
655 | 615
495 | 5,30
3,66 |
| RedAstrum ED | +40/+70
+70/+80 | 33,0
33,2 | 870
775 | 725
580 | 5,39
3,65 |
| RedAstrum HE | +40/+70
+70/+80 | 33,1
33,0 | 1090
975 | 910
735 | 5,49
3,67 |
| RedAstrum HG | +40/+70
+70/+80 | 33,0
33,0 | 1290
1150 | 1085
880 | 5,75
3,81 |
| RedAstrum MH | +40/+70
+70/+80 | 32,3
32,9 | 1660
1500 | 1390
1150 | 5,57
3,86 |
| RedAstrum ML | +40/+70
+70/+80 | 31,8
32,5 | 1885
1710 | 1580
1310 | 5,69
3,90 |
| RedAstrum RM | +40/+70
+70/+80 | 31,0
31,7 | 2255
2105 | 1880
1615 | 5,55
3,95 |
| RedAstrum RN | +40/+70
+70/+80 | 31,5
31,5 | 2720
2535 | 2255
1935 | 5,36
3,80 |
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