heatpumpdatabaseProduct data sheetheatpumpdatabase.com
Heliotherm Groundwater Heat Pump
Model code: HP12S16W-M-BC
✓ BUS eligible✓ MCS listedGround Source (GSHP)ResidentialHeating & cooling
Heating capacity
7.4–19.9 kW
COP
6.8
W10/W35
Max flow temp
65°C
Sound power
43 dB(A)
Refrigerant
R290
Boiler Upgrade Scheme
✓ BUS eligible
Listed on the Ofgem BUS Product Eligibility List (24 Sep 2026).
PEL certificate: BBA 0136/24
Grant also needs an MCS-certified installer and a qualifying system design.
MCS certification
✓ MCS listed
| General | |
|---|---|
| Heat pump type | Ground Source (GSHP) |
| Application | Residential |
| Refrigerant | R290 |
| Mode | Heating & cooling |
| Heating performance | |
| Heating capacity | 7.4–19.9 kW |
| Max heating output (low temp) | 16.2 kW at W10/W35 |
| COP (heating) | 6.8 at W10/W35 |
| Operating range (air) | 7 to 14 °C |
| Heating flow temperature | up to 65 °C |
| Cooling performance | |
| Cooling capacity | 12.2 kW |
| Max cooling output (high temp) | 12 kW at W10/W7 |
| Electrical, acoustic and physical | |
| Sound power level | 43 dB(A) (Sound Power LW(A)) |
| Dimensions (H×W×D) | 1700 × 600 × 670 mm |
| Operational Weight | 231 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.