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BuderusWLW-12 MB A H-Hybrid

The Buderus WLW-12 MB A H-Hybrid is an air-to-water heat pump with a SCOP of 4.32 (35 °C) and a sound power level of 45 dB(A).1

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SCOP (35 °C)
4.321

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

Outdoor unit sound power
45dB(A)1
Official source
Refrigerant
R2901
Official source
Type (source)
Air-to-water1
Official source
System
Hybrid1with gas boiler
Manufacturer data

Technical specifications

General
Type (source) Air-to-water1
System Hybrid (with gas boiler)1
Compressors 11
Capacity control drehzahlregelung1
Performance
Rated output 35 °C 12.2 kW1
Rated output 55 °C 12 kW1
Efficiency
SCOP (35 °C) 4.321
SCOP (55 °C) 3.281
Seasonal efficiency ηs 35 °C 170 %1
Seasonal efficiency ηs 55 °C 128 %1
COP A7/W35 4.721
COP A2/W35 4.411
COP A-7/W35 2.31
Noise
Outdoor unit sound power 45 dB(A)1
Indoor unit sound power 39 dB(A)1
Refrigerant
Refrigerant R2901
Refrigerant charge 1.6 kg1
Electrical
Max. power input 7.2 kW1
Connectivity & smart
SG Ready Yes1

Manufacturer documentation

External links to Buderus'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 Buderus WLW-12 MB A H-Hybrid use?

The Buderus WLW-12 MB A H-Hybrid uses R290.1

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026