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Heat pumps · MT

STIEBEL ELTRON WPE-I 12 H 230 Premium

The STIEBEL ELTRON WPE-I 12 H 230 Premium is a heat pump with SCOP (35 °C) 5.48 and refrigerant R454C.1,2

Last updated: Technical specificationsRules in Malta⇄ Compare this model
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SCOP (35 °C)
5.482

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

Refrigerant
R454C1
Official source
Type (source)
Ground source1
Official source
Rated output 35 °C
12kW2
Official source
Rated output 55 °C
12kW2
Official source
MT

Rules in Malta

Water Heater Scheme (heat pump water heaters)

Unknown

REWS runs a national grant scheme for energy-efficient water heaters in homes; heat pump water heaters are eligible (alongside solar water heaters). The scheme has been extended to 31 December 2026, and part A of the application must be submitted before you buy and install the equipment. Grant amounts: see the REWS page (not verified by us).

Technical specifications

General
Type (source)Ground source1
Compressors11
Capacity controldrehzahlregelung1
Performance
Rated output 35 °C12 kW2
Rated output 55 °C12 kW2
Efficiency
SCOP (35 °C)5.482
SCOP (55 °C)4.32
Seasonal efficiency ηs 35 °C216 %2
Seasonal efficiency ηs 55 °C169 %2
Energy label 35 °CA+++2
Energy label 55 °CA+++2
Noise
Indoor unit sound power39 dB(A)2
Refrigerant
RefrigerantR454C1
Refrigerant charge3.1 kg1
Electrical
Max. power input5.59 kW1
Connectivity & smart
SG ReadyYes1

How it ranks

SCOP (35 °C): better than 71% of comparable models in our database (Heat pumps · Ground source · 10–14 kW; n = 46).

Rank 13 of 47

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 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:

  • WPE-I 12 H 230 Premium
  • WPE-I 12 HK 230 Premium
  • WPE-I 12 HKW 230 Premium — Indoor unit sound power: 44 dB(A)
  • WPE-I 12 HW 230 Premium — Indoor unit sound power: 44 dB(A)

Similar models

Other brands, same type and a comparable size.

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Frequently asked questions

What is the SCOP (35 °C) of the STIEBEL ELTRON WPE-I 12 H 230 Premium?

The SCOP (35 °C) of the STIEBEL ELTRON WPE-I 12 H 230 Premium is 5.48.1,2

Which refrigerant does the STIEBEL ELTRON WPE-I 12 H 230 Premium use?

The refrigerant of the STIEBEL ELTRON WPE-I 12 H 230 Premium is R454C.1,2

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 18 Oct 2026
  2. European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed 15 Oct 2026
  3. Water Heater Scheme (heat pump water heaters) — Regulator for Energy and Water Services (REWS)