Nibe S2125 (4.72 kW)

Specifications and technical data

✓ BUS eligibleAir Source (ASHP)ResidentialR2904.72 kW

Manufacturer	Nibe
Model	S2125
Model code	S2125-8
Heat pump type	Air Source (ASHP) All Air Source heat pumps →
Application	Residential All Residential heat pumps →
Refrigerant	R290 All R290 heat pumps →
Mode	Heating & cooling
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
Power input	0.61 kW
Electrical supply	220-240V (Single Phase)
Cooling capacity	8.68 kW
Max cooling output (high temp)	6.69 kW at A35/W7
EER (cooling)	2.77 at A35/W7
Dimensions (H×W×D)	1080 × 1128 × 831 mm
Operational Weight	163 kg
Sound power level	49 dB(A) (Sound Power LW(A))
Price (unit only)	~£3,329.17 (checked 2026-08-03)
Data added	2026-07-01
Data source	Manufacturer Data Sheet
Verification	Verified by a human
Boiler Upgrade Scheme	✓ BUS eligible — Listed on the Ofgem BUS Product Eligibility List (24 Sep 2026). Grant also needs an MCS-certified installer and a qualifying system design. Funding guide
PEL certificate no.	012-C700114
MCS certification	✓ MCS listed
MCS certificate no.	012-C700114
MCS listing	View on MCS ↗

Free data sheet (PDF) →

Check noise at a neighbour’s window (MCS 020 a) →

View manufacturer page →

Nibe S2125 is a 3.15 kW air source heat pump, providing heating and cooling, using R290 refrigerant.

Where to buy (UK)

UK Supplier	Baxter Heat Pumps
UK Supplier	IMS Heat Pumps

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Data is compiled from manufacturer sources and may contain errors or gaps. Always confirm specifications with the manufacturer before making decisions.