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ViessmannVitocal 222-S AWBT-M-E-AC 221.E10 2C

Viessmann Vitocal 222-S AWBT-M-E-AC 221.E10 2C
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The Viessmann Vitocal 222-S AWBT-M-E-AC 221.E10 2C is an air-to-water heat pump with a SCOP of 4.96 (35 °C) and a sound power level of 50 dB(A).1,2

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SCOP (35 °C)
4.961

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

Heating capacity (A7/W35)
8.24kW2
Official source
Outdoor unit sound power
50dB(A)1
Official source
Refrigerant
R321
Official source
Type (source)
Air-to-water1
Official source

Technical specifications

General
Type (source) Air-to-water1
Compressors 11
Capacity control drehzahlregelung1
Performance
Heating capacity (A7/W35) 8.24 kW2
Rated output 35 °C 8.5 kW1
Rated output 55 °C 7.5 kW1
Min. outdoor temperature -20 °C2
Efficiency
SCOP (35 °C) 4.961
SCOP (55 °C) 3.281
Seasonal efficiency ηs 35 °C 195.6 %1
Seasonal efficiency ηs 55 °C 128.3 %1
Energy label 35 °C A, , , 2
Energy label 55 °C A, , 2
COP A7/W35 4.811
COP A-7/W35 3.41
Noise
Outdoor unit sound power 50 dB(A)1
Indoor unit sound power 41 dB(A)1
Refrigerant
Refrigerant R321
Refrigerant GWP 6752
Refrigerant charge 1.5 kg1
Electrical
Max. power input 1.7 kW1
Connectivity & smart
SG Ready Yes1

Manufacturer documentation

External links to Viessmann's official website. The manufacturer may change or move documents; where they differ, the manufacturer's latest version applies.

Frequently asked questions

Which refrigerant does the Viessmann Vitocal 222-S AWBT-M-E-AC 221.E10 2C use?

The Viessmann Vitocal 222-S AWBT-M-E-AC 221.E10 2C uses R32.1,2

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 29 Sept 2026
  2. Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026