heatpumpdatabaseProduct data sheetheatpumpdatabase.com
Nibe S1156
Model code: S1156-8
✓ BUS eligible✓ MCS listedGround Source (GSHP)ResidentialHeating only
Heating capacity
1.5–8 kW
SCOP
5.67
W55
COP
5.05
B0/W35
Max flow temp
65°C
Sound power
43 dB(A)
Refrigerant
R454B
Boiler Upgrade Scheme
✓ BUS eligible
Listed on the Ofgem BUS Product Eligibility List (24 Sep 2026).
PEL certificate: 012-C700186 issue 1
Grant also needs an MCS-certified installer and a qualifying system design.
MCS certification
✓ MCS listed
Certificate: 012-C700186 issue 1
| General | |
|---|---|
| Heat pump type | Ground Source (GSHP) |
| Application | Residential |
| Refrigerant | R454B |
| Mode | Heating only |
| Heating performance | |
| Heating capacity | 1.5–8 kW |
| Max heating output (low temp) | 2.85 kW at W0/W35 |
| COP (heating) | 5.05 at B0/W35 |
| SCOP (heating) | 5.67 at W55 |
| Operating range (air) | -12 to 35 °C |
| Heating flow temperature | 20–65 °C |
| Electrical, acoustic and physical | |
| Power input | 0.56 kW |
| Electrical supply | Not stated |
| Sound power level | 43 dB(A) (Sound Power LW(A)) |
| Dimensions (H×W×D) | 1500 × 600 × 620 mm |
| Operational Weight | 165 kg |
Test conditions: A = outdoor air °C, W = flow water °C (e.g. A7/W35 = 7°C air, 35°C flow). Compare COP and SCOP only at the same conditions.