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STIEBEL ELTRONWPL 20 A

The STIEBEL ELTRON WPL 20 A is an air-to-water heat pump with a SCOP of 4.7 (35 °C) and a sound power level of 55 dB(A).1,2

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SCOP (35 °C)
4.71

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

Heating capacity (A7/W35)
7.84kW2
Official source
Outdoor unit sound power
55dB(A)1
Official source
Refrigerant
R410A1
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) 7.84 kW2
Rated output 35 °C 11 kW1
Rated output 55 °C 12 kW1
Min. outdoor temperature -20 °C2
Efficiency
SCOP (35 °C) 4.71
SCOP (55 °C) 3.651
Seasonal efficiency ηs 35 °C 185 %1
Seasonal efficiency ηs 55 °C 143 %1
Energy label 35 °C A, , , 2
Energy label 55 °C A, , 2
COP A7/W35 5.091
COP A2/W35 4.141
COP A-7/W35 3.261
Noise
Outdoor unit sound power 55 dB(A)1
Refrigerant
Refrigerant R410A1
Refrigerant GWP 2,0882
Refrigerant charge 4.7 kg1
Electrical
Max. power input 5.5 kW1
Connectivity & smart
SG Ready Yes1

Frequently asked questions

Which refrigerant does the STIEBEL ELTRON WPL 20 A use?

The STIEBEL ELTRON WPL 20 A uses R410A.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