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BuderusLogatherm WLW176i-12 AR T180

Buderus Logatherm WLW176i-12 AR T180
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The Buderus Logatherm WLW176i-12 AR T180 is an air-to-water heat pump with a SCOP of 4.64 (35 °C) and a sound power level of 45 dB(A).1

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SCOP (35 °C)
4.641

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

Heating capacity (A7/W35)
5.56kW1
Official source
Outdoor unit sound power
45dB(A)1
Official source
Refrigerant
R2901
Official source
Type (source)
Air-to-water1
Official source

Technical specifications

General
Type (source) Air-to-water1
Performance
Heating capacity (A7/W35) 5.56 kW1
Rated output 35 °C 12.2 kW1
Rated output 55 °C 12 kW1
Min. outdoor temperature -22 °C1
Efficiency
SCOP (35 °C) 4.641
SCOP (55 °C) 3.481
Seasonal efficiency ηs 35 °C 183 %1
Seasonal efficiency ηs 55 °C 136 %1
Energy label 35 °C A, , , 1
Energy label 55 °C A, , 1
COP A7/W35 4.81
Noise
Outdoor unit sound power 45 dB(A)1
Indoor unit sound power 40 dB(A)1
Refrigerant
Refrigerant R2901
Refrigerant GWP 31
Refrigerant charge 1.7 kg1

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:

  • Logatherm WLW176i-12 AR T180
  • Logatherm WLW176i-12 AR T180 (60°C)
  • Logatherm WLW186i-12 AR T180
  • Logatherm WLW186i-12 AR T180 W

Manufacturer documentation

  • Product page (buderus.de)
  • Brochure / leaflet — Logatherm WLW176i AR – Produktinformation (buderus.de, PDF)
  • Manual — Logatherm WLW176i/186i AR T180 – Bedienungsanleitung (buderus.de, PDF)

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 Logatherm WLW176i-12 AR T180 use?

The Buderus Logatherm WLW176i-12 AR T180 uses R290.1

Sources

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