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ViessmannIDU-A Hybrid HWMIW.A1.19-V054 / ODU 150-A AWMOF-151.A1.04-230-V002

The Viessmann IDU-A Hybrid HWMIW.A1.19-V054 / ODU 150-A AWMOF-151.A1.04-230-V002 is an air-to-water heat pump with a SCOP of 4.48 (35 °C) and a sound power level of 51 dB(A).1

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SCOP (35 °C)
4.481

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

Heating capacity (A7/W35)
4kW1
Official source
Outdoor unit sound power
51dB(A)1
Official source
Refrigerant
R2901
Official source
Type (source)
Air-to-water1
Official source

Technical specifications

General
Type (source) Air-to-water1
System Hybrid (with gas boiler)1
Performance
Heating capacity (A7/W35) 4 kW1
Rated output 35 °C 4.08 kW1
Rated output 55 °C 3.77 kW1
Min. outdoor temperature -20 °C1
Efficiency
SCOP (35 °C) 4.481
SCOP (55 °C) 3.251
Seasonal efficiency ηs 35 °C 176 %1
Seasonal efficiency ηs 55 °C 127 %1
Energy label 35 °C A, , , 1
Energy label 55 °C A, , 1
COP A7/W35 51
Noise
Outdoor unit sound power 51 dB(A)1
Indoor unit sound power 40 dB(A)1
Refrigerant
Refrigerant R2901
Refrigerant GWP 31
Refrigerant charge 1.2 kg1

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 IDU-A Hybrid HWMIW.A1.19-V054 / ODU 150-A AWMOF-151.A1.04-230-V002 use?

The Viessmann IDU-A Hybrid HWMIW.A1.19-V054 / ODU 150-A AWMOF-151.A1.04-230-V002 uses R290.1

Sources

  1. Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026