STIEBEL ELTRONWPE-I 12.1 Plus H 400
The STIEBEL ELTRON WPE-I 12.1 Plus H 400 is a heat pump with SCOP (35 °C) 5.4 and refrigerant R290.1,2,3
Key figures
Technical specifications
| General | |
|---|---|
| Type (source) | Ground source1 |
| Compressors | 11 |
| Capacity control | drehzahlregelung1 |
| Performance | |
| Rated output 35 °C | 11.34 kW1 |
| Rated output 55 °C | 10.23 kW1 |
| Efficiency | |
| SCOP (35 °C) | 5.41 |
| SCOP (55 °C) | 4.21 |
| Seasonal efficiency ηs 35 °C | 208 %1 |
| Seasonal efficiency ηs 55 °C | 160 %1 |
| Energy label 35 °C | A, , , 3 |
| Energy label 55 °C | A, , , 3 |
| Noise | |
| Indoor unit sound power | 40 dB(A)1 |
| Refrigerant | |
| Refrigerant | R2901 |
| Refrigerant GWP | 33 |
| Refrigerant charge | 0.52 kg1 |
| Electrical | |
| Max. power input | 4.5 kW1 |
| Connectivity & smart | |
| SG Ready | Yes1 |
| Grants & market | |
| ISDE grant (NL) | 4,575 €2 |
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 12.1 Plus H 400
- WPE-I 12.1 Plus H 230
- WPE-I 12.1 Plus HW 230
- WPE-I 12.1 Plus HW 400
Manufacturer documentation
- Product page
- Datasheet / specifications — WPE-I 07.1 Plus H 400 – Technisches Datenblatt
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
Sources
- List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026
- ISDE heat pump notification code list — Rijksdienst voor Ondernemend Nederland (RVO) · accessed 27 Sept 2026
- Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026