heatpumpdatabaseProduct data sheetheatpumpdatabase.com
Zealux Zealux Inverboost
Model code: XAH16Csi32
✓ BUS eligible✓ MCS listedAir Source (ASHP)ResidentialHeating & cooling
Heating capacity
16.52 kW
COP
4.58
A7/W35
Max flow temp
55°C
Refrigerant
R32
Boiler Upgrade Scheme
✓ BUS eligible
Listed on the Ofgem BUS Product Eligibility List (24 Sep 2026).
PEL certificate: 011-1W0674_1
Grant also needs an MCS-certified installer and a qualifying system design.
MCS certification
✓ MCS listed
Certificate: 011-1W0674_1
| General | |
|---|---|
| Heat pump type | Air Source (ASHP) |
| Application | Residential |
| Refrigerant | R32 |
| Mode | Heating & cooling |
| Heating performance | |
| Heating capacity | 16.52 kW |
| Max heating output (low temp) | 10.8 kW at A-7/W55 |
| COP (heating) | 4.58 at A7/W35 |
| Operating range (air) | -25 to 43 °C |
| Heating flow temperature | up to 55 °C |
| Cooling performance | |
| Cooling capacity | 16.2 kW |
| Max cooling output (high temp) | 13.18 kW at A35/W7 |
| EER (cooling) | 2.83 at A35/W7 |
| Cooling flow temperature | 7–18 °C |
| Electrical, acoustic and physical | |
| Power input | 6.51 kW |
| Electrical supply | 220-240V (Single Phase) |
| Dimensions (H×W×D) | 1260 × 1052 × 453 mm |
| Operational Weight | 107 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.