iDM Energiesysteme heat pumps
Air/water monoblocAir/water splitGround sourceWater source 15 series
iDM Energiesysteme GmbH is an Austrian family company from Matrei in Osttirol, part of the Pletzer group, founded in 1977 and building only heat pumps since 1997; the German branch is in Leutershausen. The current range covers the R290 air-to-water units AERO ALM (2 to 24 kW) and AERO ALM 10-50 MAX, the iPUMP A ONE with a built-in 320 l cylinder, the brine-to-water units iPUMP T7, T7 ONE and T14 and the decentralised iPUMP N5 for flats. All of them run on the iDM NAVIGATOR controller and the myiDM app. Larger TERRA SW MAX units for commercial buildings are not listed here.
Checked November 2, 2026 · Matrei in Osttirol, Austria, founded 1977 · Manufacturer website
Photo: iDM Energiesysteme
Grant lists
BAFA WEP (Germany)
15 / 15 checked November 4, 2026
ZUM (Poland)
3 / 15 checked November 4, 2026
iDM Energiesysteme in Zerofy
Zerofy has no integration for iDM Energiesysteme 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.
iDM Energiesysteme heat pump types
iDM Energiesysteme 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
iDM Energiesysteme AERO ALM
5 models
- Output
- 4.1–16.7 kW
- SCOP 35 °C
- 5.12–5.69
- Max. flow
- 70 °C
- BAFA WEP
- 5 models listed
- ZUM
- No model on the list
- Zerofy
- Via SG Ready
Air/water monoblocR290
iDM Energiesysteme AERO ALM 10-50 MAX
1 model
- Output
- 33 kW
- SCOP 35 °C
- 5.08
- Max. flow
- 70 °C
- BAFA WEP
- 1 model listed
- ZUM
- No model on the list
- Zerofy
- Via SG Ready
Air/water monoblocR290
iDM Energiesysteme iPUMP A ONE
3 models
- Output
- 4.1–5.9 kW
- SCOP 35 °C
- 5.15–5.26
- Max. flow
- 70 °C
- BAFA WEP
- 3 models listed
- ZUM
- No model on the list
- Zerofy
- Via SG Ready
Air/water monoblocR290Discontinued
iDM Energiesysteme iPUMP ALM
2 models
- Output
- 7.7–9.8 kW
- SCOP 35 °C
- 5.15–5.26
- Max. flow
- –
- BAFA WEP
- 2 models listed
- ZUM
- No model on the list
- Zerofy
- Via SG Ready
Air/water monoblocR410ADiscontinued
iDM Energiesysteme TERRA AL Twin
2 models
- Output
- 24.5 kW
- SCOP 35 °C
- 4.56
- Max. flow
- –
- BAFA WEP
- 1 model listed
- ZUM
- No model on the list
- Zerofy
- Via SG Ready
iDM Energiesysteme 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 splitR410ADiscontinued
iDM Energiesysteme AERO SLM
2 models
- Output
- 8.9–14 kW
- SCOP 35 °C
- 4.5–5.25
- Max. flow
- –
- BAFA WEP
- 2 models listed
- ZUM
- No model on the list
- Zerofy
- Via SG Ready
Air/water splitR410ADiscontinued
iDM Energiesysteme iPUMP A (R410A)
2 models
- Output
- 5.4–8.9 kW
- SCOP 35 °C
- 5.14
- Max. flow
- –
- BAFA WEP
- 2 models listed
- ZUM
- No model on the list
- Zerofy
- Via SG Ready
iDM Energiesysteme 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
iDM Energiesysteme iPUMP T7 ONE
1 model
- Output
- 3.5–3.6 kW
- SCOP 35 °C
- 4.85
- Max. flow
- 70 °C
- BAFA WEP
- 1 model listed
- ZUM
- 1 model listed
- Zerofy
- Via SG Ready
Ground sourceR290
iDM Energiesysteme iPUMP T7
2 models
- Output
- 3.6 kW
- SCOP 35 °C
- 4.85
- Max. flow
- 70 °C
- BAFA WEP
- 2 models listed
- ZUM
- 2 models listed
- Zerofy
- Via SG Ready
Ground sourceR290
iDM Energiesysteme iPUMP T14
1 model
- Output
- 7.2 kW
- SCOP 35 °C
- 4.8
- Max. flow
- 70 °C
- BAFA WEP
- 1 model listed
- ZUM
- 1 model listed
- Zerofy
- Via SG Ready
Ground sourceR290
iDM Energiesysteme iPUMP N5 (NANO)
2 models
- Output
- 5 kW
- SCOP 35 °C
- 4.85–4.98
- Max. flow
- 70 °C
- BAFA WEP
- 2 models listed
- ZUM
- No model on the list
- Zerofy
- Via SG Ready
Ground sourceR410ADiscontinued
iDM Energiesysteme iPUMP T (R410A)
2 models
- Output
- 7.7–13.3 kW
- SCOP 35 °C
- 5.42–5.52
- Max. flow
- –
- BAFA WEP
- 2 models listed
- ZUM
- No model on the list
- Zerofy
- Via SG Ready
Ground sourceR410ADiscontinued
iDM Energiesysteme TERRA SWM
2 models
- Output
- 13.3–21.4 kW
- SCOP 35 °C
- 5.51–5.84
- Max. flow
- –
- BAFA WEP
- 2 models listed
- ZUM
- No model on the list
- Zerofy
- Via SG Ready
Ground sourceR410ADiscontinued
iDM Energiesysteme TERRA SW Twin
4 models
- Output
- 20.5–42.1 kW
- SCOP 35 °C
- 5.57–5.9
- Max. flow
- –
- BAFA WEP
- 4 models listed
- ZUM
- No model on the list
- Zerofy
- Via SG Ready
iDM Energiesysteme 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 sourceR134aDiscontinued
iDM Energiesysteme TERRA SW Twin H
2 models
- Output
- 15.9–28.8 kW
- SCOP 35 °C
- 5.49–6.19
- Max. flow
- –
- BAFA WEP
- 2 models listed
- ZUM
- No model on the list
- Zerofy
- Via SG Ready
iDM Energiesysteme series at a glance
| Series | Type | Output | SCOP 35 °C | SCOP 55 °C | Refrigerant | Max. flow | BAFA WEP | ZUM | SG Ready | Modbus | EEBUS |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AERO ALM | Air/water monobloc | 4.1–16.7 kW | 5.12–5.69 | 3.93–4.2 | R290 | 70 °C | 5 models listed | No model on the list | Yes | Yes | –Not documented |
| AERO ALM 10-50 MAX | Air/water monobloc | 33 kW | 5.08 | 4.09 | R290 | 70 °C | 1 model listed | No model on the list | Yes | Yes | –Not documented |
| iPUMP A ONE | Air/water monobloc | 4.1–5.9 kW | 5.15–5.26 | 3.93 | R290 | 70 °C | 3 models listed | No model on the list | Yes | Yes | –Not documented |
| iPUMP ALM Discontinued | Air/water monobloc | 7.7–9.8 kW* | 5.15–5.26 | 3.93 | R290 | – | 2 models listed | No model on the list | Yes | ?Not confirmed | ?Not confirmed |
| TERRA AL Twin Discontinued | Air/water monobloc | 24.5 kW* | 4.56 | 3.45 | R410A | – | 1 model listed | No model on the list | Yes | ?Not confirmed | ?Not confirmed |
| AERO SLM Discontinued | Air/water split | 8.9–14 kW* | 4.5–5.25 | 3.48–3.9 | R410A | – | 2 models listed | No model on the list | Yes | ?Not confirmed | ?Not confirmed |
| iPUMP A (R410A) Discontinued | Air/water split | 5.4–8.9 kW* | 5.14 | 3.58–3.78 | R410A | – | 2 models listed | No model on the list | Yes | ?Not confirmed | ?Not confirmed |
| iPUMP T7 ONE | Ground source | 3.5–3.6 kW | 4.85 | 3.87 | R290 | 70 °C | 1 model listed | 1 model listed | Yes | Yes | –Not documented |
| iPUMP T7 | Ground source | 3.6 kW | 4.85 | 3.8–3.88 | R290 | 70 °C | 2 models listed | 2 models listed | Yes | Yes | –Not documented |
| iPUMP T14 | Ground source | 7.2 kW | 4.8 | 3.95 | R290 | 70 °C | 1 model listed | 1 model listed | Yes | Yes | –Not documented |
| iPUMP N5 (NANO) | Ground source | 5 kW | 4.85–4.98 | 3.88–3.93 | R290 | 70 °C | 2 models listed | No model on the list | Yes | Yes | –Not documented |
| iPUMP T (R410A) Discontinued | Ground source | 7.7–13.3 kW* | 5.42–5.52 | 4.18–4.25 | R410A | – | 2 models listed | No model on the list | Yes | ?Not confirmed | ?Not confirmed |
| TERRA SWM Discontinued | Ground source | 13.3–21.4 kW* | 5.51–5.84 | 4.25–4.3 | R410A | – | 2 models listed | No model on the list | Yes | ?Not confirmed | ?Not confirmed |
| TERRA SW Twin Discontinued | Ground source | 20.5–42.1 kW* | 5.57–5.9 | 4.1–4.38 | R410A | – | 4 models listed | No model on the list | Yes | ?Not confirmed | ?Not confirmed |
| TERRA SW Twin H Discontinued | Water source | 15.9–28.8 kW* | 5.49–6.19 | 4.6–4.65 | R134a | – | 2 models listed | No model on the list | Yes | ?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:
- www.idm-energie.at/produkte/
- www.idm-energie.at/aero/
- www.idm-energie.at/terra/
- www.idm-energie.at/ipump/
- www.idm-energie.at/max/
- www.idm-energie.at/unternehmen/
- www.idm-energie.at/die-intelligente-waermepumpe/
- www.idm-energie.at/en/heat-pump-installation/smart-grid-connection/
- www.idm-energie.at/wp-content/uploads/2021/04/tu_de_812184_myiDMenergy_PV_Variable-Stro...
- www.idm-energie.at/wp-content/uploads/2023/10/tu_de_812184_myiDMenergy-Navigator-2.0.pdf
- elan1.bafa.bund.de/zvi-ui/wep/waermepumpen
- lista-zum.ios.edu.pl/
- BAFA Wärmeerzeuger-Portal – Wärmepumpen – checked November 4, 2026
- Lista ZUM (Instytut Ochrony Środowiska) – checked November 4, 2026
- 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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