Heat pumps · MT

BuderusLogaplus M WLW166i-4 MBB AR E (WLW-4 MBB AR & Logatherm WLW176i.2 E)

Buderus Logaplus M WLW166i-4 MBB AR E (WLW-4 MBB AR & Logatherm WLW176i.2 E)
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The Buderus Logaplus M WLW166i-4 MBB AR E (WLW-4 MBB AR & Logatherm WLW176i.2 E) is an air-to-water heat pump with a SCOP of 4.99 (35 °C) and a sound power level of 48 dB(A).1

Last updated: Technical specifications ⇄ Compare this model

Key figures

SCOP (35 °C)
4.991

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

Outdoor unit sound power
48dB(A)1
Official source
Refrigerant
R2901
Official source
Type (source)
Air-to-water1
Official source
Rated output 35 °C
4kW1
Official source

Technical specifications

General
Type (source) Air-to-water1
Compressors 11
Capacity control Inverter1
Performance
Rated output 35 °C 4 kW1
Rated output 55 °C 4 kW1
Efficiency
SCOP (35 °C) 4.991
SCOP (55 °C) 3.61
Seasonal efficiency ηs 35 °C 196 %1
Seasonal efficiency ηs 55 °C 141 %1
COP A7/W35 4.991
COP A2/W35 4.21
COP A-7/W35 3.251
SEER (cooling) 3.71
Noise
Outdoor unit sound power 48 dB(A)1
Indoor unit sound power 34 dB(A)1
Refrigerant
Refrigerant R2901
Refrigerant charge 1.13 kg1
Electrical
Max. power input 1.9 kW1
Connectivity & smart
SG Ready Yes1

Variants

This model is registered in 4 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:

  • Logaplus M WLW166i-4 MBB AR E (WLW-4 MBB AR & Logatherm WLW176i.2 E)
  • Logaplus WP400 WLW166i MBB T (WLW-4 MBB AR & Logatherm WLW166i MBB T180, Zubehör) — Indoor unit sound power: 40 dB(A)
  • Logaplus WP401 WLW166i MBB E (WLW-4 MBB AR & Logatherm WLW176i.2 E, Zubehör)
  • Logaplus M WLW166i-4 MBB AR T180 (WLW-4 MBB AR & Logatherm WLW166i MBB T180) — Indoor unit sound power: 40 dB(A)

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.

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Frequently asked questions

Which refrigerant does the Buderus Logaplus M WLW166i-4 MBB AR E (WLW-4 MBB AR & Logatherm WLW176i.2 E) use?

The Buderus Logaplus M WLW166i-4 MBB AR E (WLW-4 MBB AR & Logatherm WLW176i.2 E) uses R290.1

Sources

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