Ochsner heat pumps

Air/water monoblocAir/water splitGround sourceWater sourceHot water 15 series

OCHSNER Wärmepumpen GmbH is an Austrian family company with its head office and factory in Haag (Lower Austria) and its registered seat in Linz. The Ochsner family business dates back to 1872; the heat pump company was founded in 1978 and has built only heat pumps since 1992, all made in Austria. The residential range covers the air-to-water split units AIR HAWK, the R290 monoblocks AIR MILAN and AIR EAGLE, the brine-to-water units TERRA FOX and GEO FOX, the water-to-water AQUA FOX and the EUROPA hot water heat pumps. Industrial heat pumps are sold as OCHSNER Energietechnik.

Checked November 2, 2026 · Haag, Austria, founded 1978 · Manufacturer website · Datasheet library

Ochsner AIR HAWK 518 / 616 / 726 / 1850

Photo: Ochsner

Grant lists

BAFA WEP (Germany)

13 / 15 checked November 4, 2026

ZUM (Poland)

2 / 15 checked November 4, 2026

Ochsner in Zerofy

Zerofy has no integration for Ochsner yet. Where a series below has an SG Ready input, Zerofy can still switch it through a Shelly relay. The heat pump comparison lists every brand Zerofy supports.

Ochsner heat pump types

Air-to-water monoblock2 Air-to-water split5 Ground-source (brine/water)3 Water-source3 Hot water heat pumps2

Ochsner Air-to-water monoblock

The whole refrigerant circuit sits in one outdoor unit; only water pipes run into the house. The most common choice for retrofits, because no refrigerant lines need to be installed inside.

Air/water monoblocR290

Ochsner AIR MILAN

7 models

Output
6–16 kW
SCOP 35 °C
4.7–5.1
Max. flow
70 °C
BAFA WEP
10 models listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

Air/water monoblocR290

Ochsner AIR EAGLE

3 models

Output
20–35 kW
SCOP 35 °C
5.01–5.31
Max. flow
70 °C
BAFA WEP
3 models listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

Ochsner Air-to-water split

An outdoor unit plus an indoor hydraulic station, joined by refrigerant lines. The pipework inside the house stays frost-free without glycol, and the indoor part is often quieter to place.

Air/water splitR32

Ochsner AIR HAWK 518 / 616 / 726 / 1850

4 models

Output
12–40 kW
SCOP 35 °C
4.74–5.04
Max. flow
65 °C
BAFA WEP
4 models listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

Air/water splitR513A

Ochsner AIR HAWK 208

2 models

Output
6 kW
SCOP 35 °C
4.46
Max. flow
65 °C
BAFA WEP
1 model listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

Air/water splitR407CDiscontinued

Ochsner OCHSNER AIR 11 / 18 / 23 / 41

4 models

Output
6.8–26 kW
SCOP 35 °C
3.83–4.7
Max. flow
65 °C
BAFA WEP
4 models listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

Air/water splitR410ADiscontinued

Ochsner OCHSNER AIR 85

1 model

Output
45 kW
SCOP 35 °C
4.32
Max. flow
65 °C
BAFA WEP
1 model listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

Air/water splitR32Discontinued

Ochsner AIR FALCON 212

4 models

Output
6.7 kW
SCOP 35 °C
4.17
Max. flow
60 °C
BAFA WEP
1 model listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

Ochsner Ground-source (brine/water)

Draws heat from a borehole or ground loop, so the source stays at a steady temperature all winter. Higher efficiency and no outdoor noise, but boreholes cost money and need a permit.

Ground sourceR452B

Ochsner TERRA FOX

6 models

Output
7–16 kW
SCOP 35 °C
5.57–5.67
Max. flow
65 °C
BAFA WEP
6 models listed
ZUM
6 models listed
Zerofy
Via SG Ready
Details and listed models

Ground sourceR290

Ochsner GEO FOX

4 models

Output
7–11 kW
SCOP 35 °C
5.21–5.4
Max. flow
70 °C
BAFA WEP
4 models listed
ZUM
4 models listed
Zerofy
Via SG Ready
Details and listed models

Ground sourceR407CDiscontinued

Ochsner TERRA DX

2 models

Output
12–16 kW
SCOP 35 °C
5.49–5.59
Max. flow
–
BAFA WEP
2 models listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

Ochsner Water-source

Uses groundwater as the heat source. Very efficient, but needs a well and a water-rights permit, so it is rare in homes. Most ground-source models can be ordered in this variant.

Water sourceR452B

Ochsner AQUA FOX

6 models

Output
9–13 kW
SCOP 35 °C
7.51–7.78
Max. flow
65 °C
BAFA WEP
6 models listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

Water sourceR410A

Ochsner AQUA 36 / 54 / 97

3 models

Output
35–99 kW
SCOP 35 °C
5.53–6.26
Max. flow
65 °C
BAFA WEP
3 models listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

Water sourceR410ADiscontinued

Ochsner AQUA 11 / 14 / 17 / 22 HSTA

4 models

Output
10–22 kW
SCOP 35 °C
6.43–6.61
Max. flow
65 °C
BAFA WEP
4 models listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

Ochsner Hot water heat pumps

A small heat pump built onto a hot water tank. It heats drinking water only and is a good way to turn surplus solar into stored heat – or to add hot water to a house that is otherwise heated differently.

Hot waterR290

Ochsner EUROPA N

3 models

Output
–
SCOP 35 °C
–
Max. flow
–
BAFA WEP
Not confirmed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

Hot waterR134a

Ochsner EUROPA MINI IWP / IWPL

2 models

Output
–
SCOP 35 °C
–
Max. flow
–
BAFA WEP
Not confirmed
ZUM
No model on the list
Zerofy
Not supported
Details and listed models

Ochsner series at a glance

Series Type Output SCOP 35 °C SCOP 55 °C Refrigerant Max. flow BAFA WEP ZUM SG Ready Modbus EEBUS
AIR MILAN Air/water monobloc 6–16 kW 4.7–5.1 3.55–3.81 R290 70 °C 10 models listed No model on the list Yes –Not documented –Not documented
AIR EAGLE Air/water monobloc 20–35 kW 5.01–5.31 3.94–4.08 R290 70 °C 3 models listed No model on the list Yes –Not documented –Not documented
AIR HAWK 518 / 616 / 726 / 1850 Air/water split 12–40 kW 4.74–5.04 3.58–3.73 R32 65 °C 4 models listed No model on the list Yes –Not documented –Not documented
AIR HAWK 208 Air/water split 6 kW 4.46 3.56 R513A 65 °C 1 model listed No model on the list Yes –Not documented –Not documented
OCHSNER AIR 11 / 18 / 23 / 41 Discontinued Air/water split 6.8–26 kW* 3.83–4.7 3.23–3.65 R407C 65 °C 4 models listed No model on the list Yes ?Not confirmed ?Not confirmed
OCHSNER AIR 85 Discontinued Air/water split 45 kW* 4.32 3.49 R410A 65 °C 1 model listed No model on the list Yes ?Not confirmed ?Not confirmed
AIR FALCON 212 Discontinued Air/water split 6.7 kW* 4.17 3.21 R32 60 °C 1 model listed No model on the list Yes ?Not confirmed ?Not confirmed
TERRA FOX Ground source 7–16 kW 5.57–5.67 4.1–4.28 R452B 65 °C 6 models listed 6 models listed Yes Yes –Not documented
GEO FOX Ground source 7–11 kW 5.21–5.4 4.05–4.2 R290 70 °C 4 models listed 4 models listed Yes Yes –Not documented
TERRA DX Discontinued Ground source 12–16 kW* 5.49–5.59 3.58–3.68 R407C – 2 models listed No model on the list Yes ?Not confirmed ?Not confirmed
AQUA FOX Water source 9–13 kW 7.51–7.78 5.23–5.7 R452B 65 °C 6 models listed No model on the list Yes Yes –Not documented
AQUA 36 / 54 / 97 Water source 35–99 kW* 5.53–6.26 4.18–4.45 R410A 65 °C 3 models listed No model on the list Yes ?Not confirmed ?Not confirmed
AQUA 11 / 14 / 17 / 22 HSTA Discontinued Water source 10–22 kW* 6.43–6.61 3.95–4.18 R410A 65 °C 4 models listed No model on the list Yes ?Not confirmed ?Not confirmed
EUROPA N Hot water – – – R290 – Not confirmed No model on the list Yes –Not documented –Not documented
EUROPA MINI IWP / IWPL Hot water – – – R134a – Not confirmed No model on the list ?Not confirmed ?Not confirmed ?Not confirmed

Heating output is the figure in the manufacturer's datasheet; the basis (nominal output at A7/W35 or B0/W35, or design heat load) differs between brands, so check the datasheet before comparing. * = design heat load Pdesignh at 35 °C from the BAFA portal.

Sources

Specifications come from the manufacturer's datasheets linked above, grant status from the official lists below, checked November 2, 2026:

  1. www.ochsner.com/de-de/waermepumpen/
  2. www.ochsner.com/de-de/unternehmen/ochsner/das-unternehmen/
  3. www.ochsner.com/de-de/unternehmen/ochsner/der-unternehmer/
  4. www.ochsner.com/de-de/service/download/
  5. www.ochsner.com/de-de/ochsner-tronic-smart/
  6. elan1.bafa.bund.de/zvi-ui/wep/waermepumpen
  7. lista-zum.ios.edu.pl/
  8. BAFA Wärmeerzeuger-Portal – Wärmepumpen – checked November 4, 2026
  9. Lista ZUM (Instytut Ochrony Środowiska) – checked November 4, 2026
  10. EEBUS certified devices – checked November 2, 2026

SG Ready is a label of the Bundesverband Wärmepumpe (BWP) e.V.; “Yes” means the manufacturer documents the two-input interface or declares it on the BAFA portal, not that the series carries the BWP label – the label list is at waermepumpe.de. EEBUS is a standard of the EEBus Initiative e.V.; Modbus is a registered trademark of Schneider Electric, licensed to the Modbus Organization. Product names, logos and photos belong to their manufacturers and are shown to identify the products. Grant data: BAFA Wärmeerzeuger-Portal and Lista ZUM (IOŚ-PIB) as of the dates shown; the SCOP at 55 °C in the BAFA tables is calculated by Zerofy from the portal's ηs value.

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