heatpumpdatabaseProduct data sheetheatpumpdatabase.com
Nibe S2125
Model code: S2125-8
✓ BUS eligible✓ MCS listedAir Source (ASHP)ResidentialHeating & cooling
Heating capacity
4.72 kW
SCOP
5.33
W35
COP
5.16
A7/W35
Max flow temp
75°C
Sound power
49 dB(A)
Refrigerant
R290
Boiler Upgrade Scheme
✓ BUS eligible
Listed on the Ofgem BUS Product Eligibility List (24 Sep 2026).
PEL certificate: 012-C700114
Grant also needs an MCS-certified installer and a qualifying system design.
MCS certification
✓ MCS listed
Certificate: 012-C700114
| General | |
|---|---|
| Heat pump type | Air Source (ASHP) |
| Application | Residential |
| Refrigerant | R290 |
| Mode | Heating & cooling |
| Heating performance | |
| Heating capacity | 4.72 kW |
| Max heating output (low temp) | 3.15 kW at A7/W35 |
| COP (heating) | 5.16 at A7/W35 |
| SCOP (heating) | 5.33 at W35 |
| Operating range (air) | -25 to 38 °C |
| Heating flow temperature | 25–75 °C |
| Cooling performance | |
| Cooling capacity | 8.68 kW |
| Max cooling output (high temp) | 6.69 kW at A35/W7 |
| EER (cooling) | 2.77 at A35/W7 |
| Electrical, acoustic and physical | |
| Power input | 0.61 kW |
| Electrical supply | 220-240V (Single Phase) |
| Sound power level | 49 dB(A) (Sound Power LW(A)) |
| Dimensions (H×W×D) | 1080 × 1128 × 831 mm |
| Operational Weight | 163 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.