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STIEBEL ELTRONWPL-A 17.2 Trend HK 400

STIEBEL ELTRON WPL-A 17.2 Trend HK 400
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The STIEBEL ELTRON WPL-A 17.2 Trend HK 400 is an air-to-water heat pump with a SCOP of 4.55 (35 °C) and a sound power level of 52 dB(A).1,2

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SCOP (35 °C)
4.551

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

Heating capacity (A7/W35)
7.96kW2
Official source
Outdoor unit sound power
52dB(A)1
Official source
Refrigerant
R2901
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) 7.96 kW2
Rated output 35 °C 20.29 kW1
Rated output 55 °C 20.25 kW1
Min. outdoor temperature -22 °C2
Efficiency
SCOP (35 °C) 4.551
SCOP (55 °C) 3.831
Seasonal efficiency ηs 35 °C 179 %1
Seasonal efficiency ηs 55 °C 150 %1
Energy label 35 °C A, , , 2
Energy label 55 °C A, , , 2
COP A7/W35 5.291
COP A2/W35 3.911
COP A-7/W35 2.621
Noise
Outdoor unit sound power 52 dB(A)1
Refrigerant
Refrigerant R2901
Refrigerant GWP 32
Refrigerant charge 2.15 kg1
Electrical
Max. power input 10.19 kW1
Connectivity & smart
SG Ready Yes1

Manufacturer documentation

External links to STIEBEL ELTRON'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 STIEBEL ELTRON WPL-A 17.2 Trend HK 400 use?

The STIEBEL ELTRON WPL-A 17.2 Trend HK 400 uses R290.1,2

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026
  2. Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026