Heat pumps · INT

STIEBEL ELTRON WPW-I 17 H 400 Premium

The STIEBEL ELTRON WPW-I 17 H 400 Premium is a heat pump with SCOP (35 °C) 6.4 and refrigerant R410A.^1,2

Last updated: October 18, 2026Technical specifications ⇄ Compare this model

SCOP (35 °C): 6.4²
Seasonal efficiency: how much heat you get per kWh of electricity across a heating season.
Refrigerant: R410A¹
Official source
Type (source): Water-to-water¹
Official source
Rated output 35 °C: 17kW²
Official source
Rated output 55 °C: 14kW²
Official source

Technical specifications

General
Type (source)	Water-to-water¹
Compressors	1¹
Capacity control	keine¹
Performance
Rated output 35 °C	17 kW²
Rated output 55 °C	14 kW²
Efficiency
SCOP (35 °C)	6.4²
SCOP (55 °C)	4.12²
Seasonal efficiency ηs 35 °C	253 %²
Seasonal efficiency ηs 55 °C	162 %²
Energy label 35 °C	A+++²
Energy label 55 °C	A+++²
Noise
Indoor unit sound power	47 dB(A)²
Refrigerant
Refrigerant	R410A¹
Refrigerant charge	3.2 kg¹
Electrical
Max. power input	6.4 kW¹
Connectivity & smart
SG Ready	Yes¹

How it ranks

SCOP (35 °C): better than 55% of comparable models in our database (Heat pumps · Water-to-water · ≥ 14 kW; n = 65).

Rank 30 of 66

Compared with every model on VersusIndex in the same group with a known value; equal values do not count as better. This says nothing about price, installation or reliability.

Similar models

Other brands, same type and a comparable size.

Frequently asked questions

What is the SCOP (35 °C) of the STIEBEL ELTRON WPW-I 17 H 400 Premium?

The SCOP (35 °C) of the STIEBEL ELTRON WPW-I 17 H 400 Premium is 6.4.^1,2

Which refrigerant does the STIEBEL ELTRON WPW-I 17 H 400 Premium use?

The refrigerant of the STIEBEL ELTRON WPW-I 17 H 400 Premium is R410A.^1,2

Sources

List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed Oct 18, 2026
European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed Oct 15, 2026

Key figures