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STIEBEL ELTRON WWK-I 300 Plus CH

STIEBEL ELTRON WWK-I 300 Plus CH
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The STIEBEL ELTRON WWK-I 300 Plus CH is a heat pump water heater with water heating efficiency ηwh 172 %, load profile XL and energy label A+.1

Last updated: Technical specifications⇄ Compare this model
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Water heating efficiency ηwh
172%1
Load profile
XL1
Official source
Energy label
A+1
Official source
Indoor sound power
57dB(A)1
Official source
ηwh, colder climate
172%1
Official source

Technical specifications

General
Load profileXL1
Registered in EPREL2025-071
Efficiency
Water heating efficiency ηwh172 %1
ηwh, colder climate172 %1
ηwh, warmer climate172 %1
Energy labelA+1
Annual electricity use, colder climate974 kWh1
Annual electricity use, warmer climate974 kWh1
Noise
Indoor sound power57 dB(A)1
Connectivity & smart
Off-peak hours onlyNo1

How it ranks

Water heating efficiency ηwh: better than 92% of comparable models in our database (Heat pump water heaters · Load profile XL; n = 159).

Rank 8 of 160

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.

Variants

This model belongs to a series of 2 variants with the same load profile and energy class. The figures on this page apply to the variant above; other variants differ in: Water heating efficiency ηwh 172–177 %. After each type number you can see what differs:

  • WWK-I 300 Plus CH
  • WWK-I 300 W Plus CH — Water heating efficiency ηwh: 177 %; Annual electricity use, colder climate: 945 kWh; Annual electricity use, warmer climate: 945 kWh; ηwh, colder climate: 177 %

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

What is the water heating efficiency ηwh of the STIEBEL ELTRON WWK-I 300 Plus CH?

The water heating efficiency ηwh of the STIEBEL ELTRON WWK-I 300 Plus CH is 172 %.1

Which load profile does the STIEBEL ELTRON WWK-I 300 Plus CH have?

The STIEBEL ELTRON WWK-I 300 Plus CH has load profile XL.1

Which energy label does the STIEBEL ELTRON WWK-I 300 Plus CH have?

The STIEBEL ELTRON WWK-I 300 Plus CH has energy label A+.1

What is the indoor sound power of the STIEBEL ELTRON WWK-I 300 Plus CH?

The indoor sound power of the STIEBEL ELTRON WWK-I 300 Plus CH is 57 dB(A).1

Sources

  1. European Product Registry for Energy Labelling (EPREL) – water heaters — Europese Commissie · accessed Oct 13, 2026