heatpumpdatabaseProduct data sheetheatpumpdatabase.com
Megawave R290
Model code: MWMHPC-18KW3
✓ BUS eligible✓ MCS listedAir Source (ASHP)DomesticHeating & cooling
Heating capacity
7.24–21.9 kW
COP
4.4
A7/W35
Max flow temp
75°C
Refrigerant
R290
Boiler Upgrade Scheme
✓ BUS eligible
Listed on the Ofgem BUS Product Eligibility List (24 Sep 2026).
PEL certificate: MCS HP0341/15
Grant also needs an MCS-certified installer and a qualifying system design.
MCS certification
✓ MCS listed
Certificate: MCS HP0341/15
| General | |
|---|---|
| Heat pump type | Air Source (ASHP) |
| Application | Domestic |
| Refrigerant | R290 |
| Mode | Heating & cooling |
| Heating performance | |
| Heating capacity | 7.24–21.9 kW |
| Max heating output (low temp) | 19.45 kW at A7/W55 |
| COP (heating) | 4.4 at A7/W35 |
| Operating range (air) | -25 to 45 °C |
| Heating flow temperature | up to 75 °C |
| Cooling performance | |
| Cooling capacity | 4.55–17.2 kW |
| Max cooling output (high temp) | 17.2 kW at A35/W7 |
| Cooling flow temperature | from 7 °C |
| Electrical, acoustic and physical | |
| Power input | 9 kW |
| Electrical supply | 380-415V (Three Phase) |
| Dimensions (H×W×D) | 1455 × 1187 × 488 mm |
| Operational Weight | 195 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.