Daikin heat pumps

Air/water monoblocAir/water splitGround sourceHot water 8 series

Daikin Industries is a Japanese air-conditioning and heating manufacturer, founded in 1924 and headquartered in Osaka. In Germany its heat pumps are sold by Daikin Airconditioning Germany under the Daikin Altherma name: air-to-water units in the R32 Altherma 3 generation, the R290 Altherma 4, and the ground-source Altherma 3 GEO, plus a domestic hot water heat pump.

Checked November 2, 2026 · Osaka, Japan, founded 1924 · Manufacturer website

Photo: Daikin

Grant lists

BAFA WEP (Germany)

7 / 8 checked November 4, 2026

ZUM (Poland)

6 / 8 checked November 4, 2026

Daikin in Zerofy

Zerofy integration

Zerofy reads Daikin heat pumps through the manufacturer's cloud (Daikin Onecta), with the account the heat pump is already registered with. Autopilot then moves heat into the building and the hot water tank when your own solar power is available or the electricity price is low.

What Zerofy can do with it:

Heating statusHot water statusHot water temperatureRoom temperatureFlow temperatureSolar AutopilotSmart Autopilot (tariff-optimised heating)

Setup guide Heat pump comparison

Daikin heat pump types

Air-to-water monoblock4 Air-to-water split2 Ground-source (brine/water)1 Hot water heat pumps1

Daikin 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

Daikin Altherma 4 H

8 models

Output: 5.8–12.5 kW
SCOP 35 °C: 4.96–5.14
Max. flow: 75 °C
BAFA WEP: 30 models listed
ZUM: 79 models listed
Zerofy: Native

Details and listed models

Air/water monoblocR32

Daikin Altherma 3 H HT

7 models

Output: 12.1–12.4 kW
SCOP 35 °C: 4.71–4.81
Max. flow: 70 °C
BAFA WEP: 16 models listed
ZUM: 138 models listed
Zerofy: Native

Details and listed models

Air/water monoblocR32

Daikin Altherma 3 H MT

7 models

Output: 6.9–8.1 kW
SCOP 35 °C: 4.69–4.98
Max. flow: 65 °C
BAFA WEP: 20 models listed
ZUM: No model on the list
Zerofy: Native

Details and listed models

Air/water monoblocR32

Daikin Altherma 3 M

1 model

Output: 6 kW
SCOP 35 °C: 4.52
Max. flow: –
BAFA WEP: 1 model listed
ZUM: 6 models listed
Zerofy: Native

Details and listed models

Daikin 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

Daikin Altherma 3 R MT

7 models

Output: 6.9–8.1 kW
SCOP 35 °C: 4.81–4.98
Max. flow: 65 °C
BAFA WEP: 33 models listed
ZUM: 144 models listed
Zerofy: Native

Details and listed models

Air/water splitR32

Daikin Altherma 3 R

7 models

Output: 6 kW
SCOP 35 °C: 4.47–4.52
Max. flow: 65 °C
BAFA WEP: 6 models listed
ZUM: 62 models listed
Zerofy: Native

Details and listed models

Daikin 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 sourceR32

Daikin Altherma 3 GEO

4 models

Output: 6–8.6 kW
SCOP 35 °C: 5.06–5.2
Max. flow: 65 °C
BAFA WEP: 4 models listed
ZUM: 4 models listed
Zerofy: Native

Details and listed models

Daikin 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 water

Daikin Altherma M HW

1 model

Output: –
SCOP 35 °C: –
Max. flow: –
BAFA WEP: Not confirmed
ZUM: Not confirmed
Zerofy: Native

Details and listed models

Daikin series at a glance

Series	Type	Output	SCOP 35 °C	SCOP 55 °C	Refrigerant	Max. flow	BAFA WEP	ZUM	SG Ready	Modbus	EEBUS
Altherma 4 H	Air/water monobloc	5.8–12.5 kW*	4.96–5.14	3.7–4.05	R290	75 °C	30 models listed	79 models listed	Yes	Yes	–Not documented
Altherma 3 H HT	Air/water monobloc	12.1–12.4 kW*	4.71–4.81	3.58–3.63	R32	70 °C	16 models listed	138 models listed	Yes	Yes	Yes
Altherma 3 H MT	Air/water monobloc	6.9–8.1 kW*	4.69–4.98	3.53–3.6	R32	65 °C	20 models listed	No model on the list	Yes	Yes	Yes
Altherma 3 M	Air/water monobloc	6 kW*	4.52	3.28	R32	–	1 model listed	6 models listed	Yes	Yes	Yes
Altherma 3 R MT	Air/water split	6.9–8.1 kW*	4.81–4.98	3.43–3.58	R32	65 °C	33 models listed	144 models listed	Yes	Yes	Yes
Altherma 3 R	Air/water split	6 kW*	4.47–4.52	3.25–3.28	R32	65 °C	6 models listed	62 models listed	Yes	Yes	Yes
Altherma 3 GEO	Ground source	6–8.6 kW*	5.06–5.2	3.73–4.05	R32	65 °C	4 models listed	4 models listed	Yes	?Not confirmed	?Not confirmed
Altherma M HW	Hot water	–	–	–	–	–	Not confirmed	Not confirmed	?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:

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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