Heat pumps · MT

ViessmannVitocal 250-SH HAWB-M-AC 252.B06

The Viessmann Vitocal 250-SH HAWB-M-AC 252.B06 is an air-to-water heat pump with a SCOP of 4.69 (35 °C) and a sound power level of 49 dB(A).1,2

Last updated: Technical specifications ⇄ Compare this model

Key figures

SCOP (35 °C)
4.691

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

Heating capacity (A7/W35)
5.3kW2
Official source
Outdoor unit sound power
49dB(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) 5.3 kW2
Rated output 35 °C 6.2 kW1
Rated output 55 °C 6 kW1
Min. outdoor temperature -20 °C2
Efficiency
SCOP (35 °C) 4.691
SCOP (55 °C) 3.21
Seasonal efficiency ηs 35 °C 185 %1
Seasonal efficiency ηs 55 °C 125 %1
Energy label 35 °C A, , , 2
Energy label 55 °C A, , 2
COP A7/W35 4.841
COP A2/W35 4.531
COP A-7/W35 3.061
Noise
Outdoor unit sound power 49 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 1.1 kW1
Connectivity & smart
SG Ready Yes1

Variants

This model is registered in 2 combinations (for example with a different indoor unit or cylinder) with exactly the same performance. All figures on this page apply to each of these types. The part of the type number that differs is in bold; small differences (e.g. cylinder volume or anode) are listed after it:

  • Vitocal 250-SH HAWB-M-AC 252.B06
  • Vitocal 250-SH HAWB-M-AC-AF 252.B06

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 250-SH HAWB-M-AC 252.B06 use?

The Viessmann Vitocal 250-SH HAWB-M-AC 252.B06 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