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Heat pumps · INT

Wolf CHA-10/400V

The Wolf CHA-10/400V is an air-to-water heat pump with a SCOP of 4.85 (35 °C) and a sound power level of 53 dB(A).1,2,3

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SCOP (35 °C)
4.853

Seasonal efficiency: how much heat you get per kWh of electricity across a heating season.

Heating capacity (A7/W35)
4.1kW2
Official source
Outdoor unit sound power
53dB(A)3
Official source
Refrigerant
R2901
Official source
Type (source)
Air-to-water1
Official source

Technical specifications

General
Type (source)Air-to-water1
Compressors11
Capacity controldrehzahlregelung1
Performance
Heating capacity (A7/W35)4.1 kW2
Rated output 35 °C8 kW3
Rated output 55 °C8 kW3
Min. outdoor temperature-22 °C2
Efficiency
SCOP (35 °C)4.853
SCOP (55 °C)3.63
Seasonal efficiency ηs 35 °C191 %3
Seasonal efficiency ηs 55 °C141 %3
Energy label 35 °CA+++3
Energy label 55 °CA++3
COP A7/W355.721
COP A2/W354.651
COP A-7/W352.881
Noise
Outdoor unit sound power53 dB(A)3
Indoor unit sound power32 dB(A)3
Refrigerant
RefrigerantR2901
Refrigerant GWP32
Refrigerant charge3.4 kg1
Electrical
Max. power input5.75 kW1
Connectivity & smart
SG ReadyYes1

How it ranks

SCOP (35 °C): better than 41% of comparable models in our database (Heat pumps · Air-to-water · 8–10 kW; n = 171).

Rank 96 of 172

Compared with every model on VersusIndex in the same group with a known value; equal values do not count as better. This says nothing about price, installation or reliability.

Similar models

Other brands, same type and a comparable size.

More from Wolf

All Wolf models (11) →

How we collect and check this data →

Frequently asked questions

Which refrigerant does the Wolf CHA-10/400V use?

The Wolf CHA-10/400V uses R290.1,2,3

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed Sep 29, 2026
  2. Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed Oct 18, 2026
  3. European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed Oct 15, 2026