Nibe S1256 (3–13 kW)
Specifications and technical data
Ground Source (GSHP)ResidentialR454B3–13 kW
| Manufacturer | Nibe |
|---|---|
| Model | S1256 |
| Model code | S1256-13 |
| Heat pump type | Ground Source (GSHP) |
| Application | Residential |
| Refrigerant | R454B |
| Mode | Heating only |
| Heating capacity | 3–13 kW |
| Max heating output (low temp) | 5.12 kW at W0/W35 |
| COP (heating) | 5.06 at B0/W35 |
| SCOP (heating) | 5.88 at W55 |
| Operating range (air) | -12 to 35 °C |
| Heating flow temperature | 20–65 °C |
| Power input | 1.01 kW |
| Electrical supply | Not stated |
| Dimensions (H×W×D) | 1800 × 600 × 620 mm |
| Operational Weight | 217 kg |
| Sound power level | 47 dB(A) (Sound Power LW(A)) |
| Data added | 2026-07-01 |
| Data source | Manufacturer Data Sheet |
| MCS certification | ✓ MCS listed — eligible for Boiler Upgrade Scheme (MCS-certified install required) |
| MCS certificate no. | 012-C700187_issue1 |
| MCS listing | View on MCS ↗ |
Nibe S1256 is a 13 kW ground source heat pump, using R454B refrigerant.
Where to buy (UK)
| UK Supplier | Baxter Heat Pumps |
|---|---|
| UK Supplier | IMS Heat Pumps |
✓ Manually verified by Heat Pump Database
✎ Suggest a correction to this data
Data is compiled from manufacturer sources and may contain errors or gaps. Always confirm specifications with the manufacturer before making decisions.
More from Nibe
F2050
ASHP · 5.55 kW · SCOP 5.08
F2050
ASHP · 7.18 kW · SCOP 4.59
F2050
ASHP · 6.61 kW · SCOP 4.87
F2050
ASHP · 10.5 kW · SCOP 4.58
S2125
ASHP · 4.72 kW · SCOP 5.33
S2125
ASHP · 7.23 kW · SCOP 5
S2125
ASHP · 10.31 kW · SCOP 5.33
S2125
ASHP · 12.03 kW · SCOP 5.3
Other Ground Source (GSHP) heat pumps
WZSV
GSHP · 0.77–6 kW
WZSV
GSHP · 3.32 kW
WZSV
GSHP · 4 kW
WZSV
GSHP · 5.06 kW
WZS
GSHP · 4.7 kW
WZS
GSHP · 7.7 kW
Compare with other products
Open the interactive database →
The Nibe name and logo are trademarks of their respective owner and are used here for identification purposes only.