versusindex
UK
Heat pumps · UK

STIEBEL ELTRONWPE-I 59 H 400 Premium

STIEBEL ELTRON WPE-I 59 H 400 Premium
Image: STIEBEL ELTRONrequest removal

The STIEBEL ELTRON WPE-I 59 H 400 Premium is a heat pump with SCOP (35 °C) 5.19 and refrigerant R410A.1,2

Last updated: Technical specifications Rules in the UK ⇄ Compare this model
Search this model
SCOP (35 °C)
5.191

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

Refrigerant
R410A1
Official source
Type (source)
Ground source1
Official source
Rated output 35 °C
59.64kW1
Official source
Rated output 55 °C
55.34kW1
Official source
UK

Rules in the UK

Boiler Upgrade Scheme

Not eligible

Fixed grant in England and Wales, deducted from your installer’s quote. £9,000 when replacing oil or LPG off the gas grid (until March 2027). Scotland: Home Energy Scotland grant instead.4,5

  • Must be MCS-certified (product and installer). Check the Ofgem product eligibility list.
  • Rated output 59.64 kW; the scheme covers systems up to 45 kW.
  • SCOP at 55 °C: 4.08. The installed system needs a SCOP of at least 2.8 (MCS calculation).
Heat pump grants in the UK explained →

Technical specifications

General
Type (source) Ground source1
Compressors 11
Capacity control drehzahlregelung1
Performance
Rated output 35 °C 59.64 kW1
Rated output 55 °C 55.34 kW1
Efficiency
SCOP (35 °C) 5.191
SCOP (55 °C) 4.081
Seasonal efficiency ηs 35 °C 200 %1
Seasonal efficiency ηs 55 °C 155 %1
Energy label 35 °C A, , , 2
Energy label 55 °C A, , , 2
Noise
Indoor unit sound power 43 dB(A)1
Refrigerant
Refrigerant R410A1
Refrigerant GWP 2,0882
Refrigerant charge 6.3 kg1
Electrical
Max. power input 26.2 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.

Frequently asked questions

What is the SCOP (35 °C) of the STIEBEL ELTRON WPE-I 59 H 400 Premium?

The SCOP (35 °C) of the STIEBEL ELTRON WPE-I 59 H 400 Premium is 5.19.1,2

Which refrigerant does the STIEBEL ELTRON WPE-I 59 H 400 Premium use?

The refrigerant of the STIEBEL ELTRON WPE-I 59 H 400 Premium is R410A.1,2

How much Boiler Upgrade Scheme grant can you get for the STIEBEL ELTRON WPE-I 59 H 400 Premium?

Probably none. Rated output 59.64 kW; the scheme covers systems up to 45 kW.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
  3. Boiler Upgrade Scheme: what you can get — GOV.UK · accessed 27 Sept 2026
  4. Boiler Upgrade Scheme: guidance for installers (V5) — Ofgem · accessed 27 Sept 2026
  5. Boiler Upgrade Scheme product eligibility — Ofgem · accessed 27 Sept 2026