Wolf heat pumps

Air/water monoblocAir/water splitGround sourceHot water 7 series

WOLF GmbH is a German heating, ventilation and air-conditioning manufacturer from Mainburg, Bavaria, founded in 1963. Its heat pump range includes the CHA air-to-water monoblock with R290 (single-family and multi-family sizes, plus the CHC heat pump centre and the new CHA-3), the R32 FHA monoblock, the BWL-1S split system, the BWS-1 brine-to-water unit and the FHS hot water heat pump. The WOLF Link interface module connects the units to the WOLF Smartset portal.

Checked November 2, 2026 · Mainburg, Germany, founded 1963 · Manufacturer website

Grant lists

BAFA WEP (Germany)

4 / 7 checked November 4, 2026

ZUM (Poland)

1 / 7 checked November 4, 2026

Wolf in Zerofy

Zerofy has no integration for Wolf 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.

Wolf heat pump types

Air-to-water monoblock4 Air-to-water split1 Ground-source (brine/water)1 Hot water heat pumps1

Wolf 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

Wolf CHA / CHC Monoblock 07/10

8 models

Output: 6–8 kW
SCOP 35 °C: 4.83–4.92
Max. flow: 70 °C
BAFA WEP: 24 models listed
ZUM: 1 model listed
Zerofy: Via SG Ready

Details and listed models

Air/water monoblocR290

Wolf CHA-3

2 models

Output: 7–10 kW
SCOP 35 °C: 5.09–5.21
Max. flow: 70 °C
BAFA WEP: 2 models listed
ZUM: No model on the list
Zerofy: Via SG Ready

Details and listed models

Air/water monoblocR290

Wolf CHA-Monoblock 16/20 and 20/24

2 models

Output: 13.5–18.9 kW
SCOP 35 °C: 5.2–5.46
Max. flow: 70 °C
BAFA WEP: 5 models listed
ZUM: No model on the list
Zerofy: Via SG Ready

Details and listed models

Air/water monoblocR32

Wolf FHA Monoblock

5 models

Output: 4.6–13.1 kW
SCOP 35 °C: 4.98
Max. flow: 65 °C
BAFA WEP: 6 models listed
ZUM: No model on the list
Zerofy: Via SG Ready

Details and listed models

Wolf 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 splitR410A

Wolf BWL-1S Split

9 models

Output: 5.2–17.5 kW
SCOP 35 °C: –
Max. flow: 55 °C
BAFA WEP: No model on the list
ZUM: No model on the list
Zerofy: Via SG Ready

Details and listed models

Wolf 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 sourceR407C

Wolf BWS-1 / BWW-1

5 models

Output: 5.9–16.8 kW
SCOP 35 °C: –
Max. flow: 63 °C
BAFA WEP: No model on the list
ZUM: No model on the list
Zerofy: Via SG Ready

Details and listed models

Wolf 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

Wolf FHS hot water heat pump

1 model

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

Details and listed models

Wolf series at a glance

Series	Type	Output	SCOP 35 °C	SCOP 55 °C	Refrigerant	Max. flow	BAFA WEP	ZUM	SG Ready	Modbus	EEBUS
CHA / CHC Monoblock 07/10	Air/water monobloc	6–8 kW	4.83–4.92	3.6–3.78	R290	70 °C	24 models listed	1 model listed	Yes	–Not documented	Yes
CHA-3	Air/water monobloc	7–10 kW	5.09–5.21	3.83–3.97	R290	70 °C	2 models listed	No model on the list	Yes	–Not documented	–Not documented
CHA-Monoblock 16/20 and 20/24	Air/water monobloc	13.5–18.9 kW	5.2–5.46	3.88–3.92	R290	70 °C	5 models listed	No model on the list	Yes	–Not documented	Yes
FHA Monoblock	Air/water monobloc	4.6–13.1 kW	4.98	3.41	R32	65 °C	6 models listed	No model on the list	Yes	–Not documented	Yes
BWL-1S Split	Air/water split	5.2–17.5 kW	–	–	R410A	55 °C	No model on the list	No model on the list	Yes	–Not documented	–Not documented
BWS-1 / BWW-1	Ground source	5.9–16.8 kW	–	–	R407C	63 °C	No model on the list	No model on the list	Yes	–Not documented	–Not documented
FHS hot water heat pump	Hot water	–	–	–	R290	–	Not confirmed	Not confirmed	Yes	–Not documented	–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:

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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