Viessmann heat pumps

Air/water monoblocAir/water splitGround sourceHot water 9 series

Viessmann Climate Solutions, based in Allendorf (Eder), Germany, was founded in 1917 as a heating technology manufacturer and has been part of Carrier Global Corporation since January 2024. Its Vitocal heat pump range covers R290 monoblock air-to-water units (Vitocal 150-A, 250-A, 200-A ie), R32 split units (Vitocal 200-S, 222-S), brine and water-to-water units (Vitocal 222-G, 300-G, 350-G) and domestic hot water heat pumps (Vitocal 060-A, 262-A).

Checked November 2, 2026 · Allendorf (Eder), Germany, founded 1917 · Manufacturer website · Datasheet library

Photo: Viessmann

Grant lists

BAFA WEP (Germany)

7 / 9 checked November 4, 2026

ZUM (Poland)

6 / 9 checked November 4, 2026

Viessmann in Zerofy

Beta

Zerofy reads Viessmann heat pumps through the manufacturer's cloud (ViCare), 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 boostHot water temperatureRoom temperatureSolar AutopilotSmart Autopilot (tariff-optimised heating)

Setup guide Heat pump comparison

Viessmann heat pump types

Air-to-water monoblock3 Air-to-water split1 Ground-source (brine/water)3 Hot water heat pumps2

Viessmann 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

Viessmann Vitocal 250-A

9 models

Output: 4–9 kW
SCOP 35 °C: 4.44–5.27
Max. flow: 70 °C
BAFA WEP: 159 models listed
ZUM: 76 models listed
Zerofy: Native

Details and listed models

Air/water monoblocR290

Viessmann Vitocal 150-A

7 models

Output: 4–9.1 kW
SCOP 35 °C: 4.44–5.06
Max. flow: 70 °C
BAFA WEP: 84 models listed
ZUM: 36 models listed
Zerofy: Native

Details and listed models

Air/water monoblocR290

Viessmann Vitocal 200-A / 200-A ie

4 models

Output: 4.9–10.3 kW
SCOP 35 °C: 4.14–5.26
Max. flow: 75 °C
BAFA WEP: 11 models listed
ZUM: 4 models listed
Zerofy: Native

Details and listed models

Viessmann 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

Viessmann Vitocal 200-S / 222-S

9 models

Output: 5.3–8.3 kW
SCOP 35 °C: 4.47–4.96
Max. flow: 60 °C
BAFA WEP: 38 models listed
ZUM: 35 models listed
Zerofy: Native

Details and listed models

Viessmann 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

Viessmann Vitocal 300-G ie

3 models

Output: 5.9–13.1 kW
SCOP 35 °C: 5.29–5.63
Max. flow: 70 °C
BAFA WEP: 6 models listed
ZUM: 3 models listed
Zerofy: Native

Details and listed models

Ground sourceR410A

Viessmann Vitocal 222-G / 333-G

8 models

Output: 4.3–10.4 kW
SCOP 35 °C: 4.75–5.32
Max. flow: 65 °C
BAFA WEP: 6 models listed
ZUM: 10 models listed
Zerofy: Native

Details and listed models

Ground sourceR410A

Viessmann Vitocal 350-G

5 models

Output: 20.5–42.3 kW
SCOP 35 °C: 6.14–6.58
Max. flow: 68 °C
BAFA WEP: 4 models listed
ZUM: No model on the list
Zerofy: Native

Details and listed models

Viessmann 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

Viessmann Vitocal 262-A

3 models

Output: –
SCOP 35 °C: –
Max. flow: 65 °C
BAFA WEP: Not confirmed
ZUM: Not confirmed
Zerofy: Native

Details and listed models

Hot waterR290

Viessmann Vitocal 060-A

3 models

Output: –
SCOP 35 °C: –
Max. flow: 62 °C
BAFA WEP: Not confirmed
ZUM: Not confirmed
Zerofy: Native

Details and listed models

Viessmann series at a glance

Series	Type	Output	SCOP 35 °C	SCOP 55 °C	Refrigerant	Max. flow	BAFA WEP	ZUM	SG Ready	Modbus	EEBUS
Vitocal 250-A	Air/water monobloc	4–9 kW	4.44–5.27	3.33–4.18	R290	70 °C	159 models listed	76 models listed	Yes	–Not documented	–Not documented
Vitocal 150-A	Air/water monobloc	4–9.1 kW	4.44–5.06	3.25–3.98	R290	70 °C	84 models listed	36 models listed	Yes	–Not documented	–Not documented
Vitocal 200-A / 200-A ie	Air/water monobloc	4.9–10.3 kW*	4.14–5.26	3.2–3.98	R290	75 °C	11 models listed	4 models listed	Yes	Yes	–Not documented
Vitocal 200-S / 222-S	Air/water split	5.3–8.3 kW	4.47–4.96	3.2–3.43	R32	60 °C	38 models listed	35 models listed	Yes	–Not documented	–Not documented
Vitocal 300-G ie	Ground source	5.9–13.1 kW*	5.29–5.63	3.73–4.18	R290	70 °C	6 models listed	3 models listed	Yes	Yes	–Not documented
Vitocal 222-G / 333-G	Ground source	4.3–10.4 kW	4.75–5.32	3.7–3.98	R410A	65 °C	6 models listed	10 models listed	Yes	Yes	–Not documented
Vitocal 350-G	Ground source	20.5–42.3 kW	6.14–6.58	4.83–5.02	R410A	68 °C	4 models listed	No model on the list	Yes	Yes	–Not documented
Vitocal 262-A	Hot water	–	–	–	R290	65 °C	Not confirmed	Not confirmed	?Not confirmed	?Not confirmed	?Not confirmed
Vitocal 060-A	Hot water	–	–	–	R290	62 °C	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:

elan1.bafa.bund.de/zvi-ui/wep/waermepumpen
www.viessmann.de/de/wohngebaeude/waermepumpe.html
www.viessmann-climatesolutions.com/de/ueber-uns.html
developer.viessmann-climatesolutions.com/start.html
community.viessmann.de/viessmann/attachments/viessmann/customers-heatpump-hybrid/97841/...
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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