NIBE S1157-5 EM 1X230V
The NIBE S1157-5 EM 1X230V is a heat pump with SCOP (35 °C) 4.88 and refrigerant R290.1,2
Key figures
Technical specifications
| General | |
|---|---|
| Type (source) | Ground source1 |
| Performance | |
| Rated output 35 °C | 5 kW2 |
| Rated output 55 °C | 4 kW2 |
| Efficiency | |
| SCOP (35 °C) | 4.882 |
| SCOP (55 °C) | 3.832 |
| Seasonal efficiency ηs 35 °C | 192 %2 |
| Seasonal efficiency ηs 55 °C | 150 %2 |
| Energy label 35 °C | A+++2 |
| Energy label 55 °C | A+++2 |
| Noise | |
| Indoor unit sound power | 39 dB(A)2 |
| Refrigerant | |
| Refrigerant | R2901 |
| Refrigerant GWP | 31 |
| Refrigerant charge | 0.15 kg1 |
Variants
This model is registered in 14 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:
- S1157-5 EM 1X230V
- S1157-5 EM 3X230V
- S1157-5 EM 3X400V
- S1157-5 PC EM 1X230V
- S1157-5 PC EM 3X400V
- S1257-5 E EM 3X400V
- S1257-5 E PC EM 3X400V
- S1257-5 R EM 1X230V
- S1257-5 R EM 1X230V UK
- S1257-5 R EM 3X230V
- S1257-5 R EM 3X400V
- S1257-5 R PC EM 1X230V
- S1257-5 R PC EM 1X230V UK
- S1257-5 R PC EM 3X400V
Similar models
Other brands, same type and a comparable size.
More from NIBE
- NIBE F1153-4 SCOP (35 °C): 7
- NIBE F2040-6 SCOP (35 °C): 4.77
- NIBE F1145-5 1x230 SCOP (35 °C): 4.5
- NIBE F1145-6 3x400 SCOP (35 °C): 4.8
- NIBE F1153-6 PC SCOP (35 °C): 6.95
- NIBE F1145-8 3x400 SCOP (35 °C): 4.9
How we collect and check this data →
Frequently asked questions
Sources
- Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed Oct 18, 2026
- European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed Oct 15, 2026