heatpumpdatabaseProduct data sheetheatpumpdatabase.com
Airwell Wellea Split
Model code: AW-WHPSA0406-N91/AW-YHPSA04-H91
✓ BUS eligible✓ MCS listedAir Source (ASHP)ResidentialHeating & cooling
Heating capacity
4.25 kW
COP
5.2
A7/W35
Max flow temp
60°C
Sound power
56 dB(A)
Refrigerant
R32
Boiler Upgrade Scheme
✓ BUS eligible
Listed on the Ofgem BUS Product Eligibility List (24 Sep 2026).
PEL certificate: 041-K015-01 a
Grant also needs an MCS-certified installer and a qualifying system design.
MCS certification
✓ MCS listed
Certificate: 041-K015-01 a
| General | |
|---|---|
| Heat pump type | Air Source (ASHP) |
| Application | Residential |
| Refrigerant | R32 |
| Mode | Heating & cooling |
| Heating performance | |
| Heating capacity | 4.25 kW |
| COP (heating) | 5.2 at A7/W35 |
| Operating range (air) | -25 to 46 °C |
| Heating flow temperature | up to 60 °C |
| Cooling performance | |
| Cooling capacity | 4.5 kW |
| EER (cooling) | 5.55 at A35/W18 |
| Electrical, acoustic and physical | |
| Electrical supply | 220-240V (Single Phase) |
| Sound power level | 56 dB(A) (Sound Power LW(A)) |
| Dimensions (H×W×D) | 712 × 1008 × 426 mm |
| Operational Weight | 58 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.