OVUM Heiztechnik heat pumps

Air/water monoblocGround source 3 series

OVUM Heiztechnik GmbH is an Austrian heat pump maker from Kirchbichl in Tyrol, where it also builds its units; its German branch, OVUM Bayern, is in Ihrlerstein (Bavaria), and it works closely with the installer company MECO. The range covers the AirCube air-to-water monoblocks (AC208P to AC520P, R290, cascades up to 160 kW) and the stackable CUBIC brine-to-water modules with 150 g of R290 each. Every unit runs on OVUM's MIRA controller, which has a documented Modbus TCP/RTU interface, SG Ready inputs and PV surplus control via SunSpec.

Checked November 2, 2026 · Kirchbichl, Austria · Manufacturer website

OVUM Heiztechnik AirCube (ACP)

Photo: OVUM Heiztechnik

Grant lists

BAFA WEP (Germany)

3 / 3 checked November 4, 2026

ZUM (Poland)

0 / 3 checked November 4, 2026

OVUM Heiztechnik in Zerofy

Zerofy has no integration for OVUM Heiztechnik 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.

OVUM Heiztechnik heat pump types

Air-to-water monoblock2 Ground-source (brine/water)1

OVUM Heiztechnik 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

OVUM Heiztechnik AirCube (ACP)

4 models

Output
5.1–11.6 kW
SCOP 35 °C
5.53–5.92
Max. flow
70 °C
BAFA WEP
3 models listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

Air/water monoblocR410ADiscontinued

OVUM Heiztechnik AC (R410A)

6 models

Output
8.3–10.8 kW
SCOP 35 °C
4.92–5.18
Max. flow
–
BAFA WEP
6 models listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

OVUM Heiztechnik 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 sourceR290

OVUM Heiztechnik CUBIC

5 models

Output
3.3–9.9 kW
SCOP 35 °C
5.48
Max. flow
70 °C
BAFA WEP
1 model listed
ZUM
No model on the list
Zerofy
Via SG Ready
Details and listed models

OVUM Heiztechnik series at a glance

Series Type Output SCOP 35 °C SCOP 55 °C Refrigerant Max. flow BAFA WEP ZUM SG Ready Modbus EEBUS
AirCube (ACP) Air/water monobloc 5.1–11.6 kW 5.53–5.92 4–4.38 R290 70 °C 3 models listed No model on the list Yes Yes –Not documented
AC (R410A) Discontinued Air/water monobloc 8.3–10.8 kW* 4.92–5.18 3.45–3.55 R410A – 6 models listed No model on the list Yes ?Not confirmed ?Not confirmed
CUBIC Ground source 3.3–9.9 kW 5.48 4.15 R290 70 °C 1 model listed No model on the list Yes Yes –Not documented

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.ovum.at/produkte/aircube/
  2. www.ovum.at/produkte/cubic/
  3. www.ovum.at/produkte/mira/
  4. www.ovum.at/ovum/
  5. www.ovum.at/ovum/standorte/
  6. www.ovum.at/impressum/
  7. susi.ovum.at/api/1/assets/7085c03c-98da-4ebf-8fb2-862e85620d7f/asset?culture=de
  8. elan1.bafa.bund.de/zvi-ui/wep/waermepumpen
  9. lista-zum.ios.edu.pl/
  10. BAFA Wärmeerzeuger-Portal – Wärmepumpen – checked November 4, 2026
  11. Lista ZUM (Instytut Ochrony Środowiska) – checked November 4, 2026
  12. 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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