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Viessmann Vitocal 300-G BWC (2.4–11.4 kW)
Specifications and technical data
✓ BUS eligibleGround Source (GSHP)ResidentialR410A2.4–11.4 kW
| Manufacturer | Viessmann |
|---|---|
| Model | Vitocal 300-G BWC |
| Model code | Vitocal 300-G BWC 301.C12 |
| Heat pump type | Ground Source (GSHP) All Ground Source heat pumps → |
| Application | Residential All Residential heat pumps → |
| Refrigerant | R410A All R410A heat pumps → |
| Mode | Heating only |
| Heating capacity | 2.4–11.4 kW |
| Max heating output (low temp) | 5.3 kW at B0/W35 |
| COP (heating) | 4.8 at B0/W35 |
| SCOP (heating) | 5.32 at W55 |
| Operating range (air) | -10 to 25 °C |
| Heating flow temperature | up to 65 °C |
| Power input | 1.11 kW |
| Electrical supply | 380-415V (Three Phase) |
| Dimensions (H×W×D) | 1081 × 600 × 680 mm |
| Operational Weight | 154 kg |
| Sound power level | 40 dB(A) (Sound Power LW(A)) |
| Data added | 2026-06-14 |
| 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. | 011-1W0292 |
| MCS certification | ✓ MCS listed |
| MCS certificate no. | 011-1W0292 |
| MCS listing | View on MCS ↗ |
Viessmann Vitocal 300-G BWC is a 11.4 kW ground source heat pump, using R410A refrigerant.
Where to buy (UK)
| UK Supplier | Secon Renewables |
|---|---|
| UK Supplier | Pirate Heating Supplies |
| UK Supplier | Beet BG |
| UK Supplier | GetPlumb |
| UK Supplier | Solar Trading |
✎ Suggest a correction to this data
Data is compiled from manufacturer sources and may contain errors or gaps. Always confirm specifications with the manufacturer before making decisions.
Reviews & further reading
- Manufacturer Vitocal 300-G Ground Source Heat Pump — Viessmann
- Review Viessmann Heat Pumps: Reviews, Costs & Model Range (2026) — GreenMatchCovers the wider Viessmann range
- Review Viessmann Heat Pump Review — heat-pumps.org.ukCovers the wider Viessmann range
Alternatives to consider
Three Ground Source (GSHP) heat pumps from other manufacturers closest in capacity to this one.
F1145
Nibe · F1145-12
- Capacity
- 11.48 kW
- SCOP
- 4.8 (W35)
- Sound power
- 43 dB(A)
- Refrigerant
- R407C
flexoTHERM
Vaillant · flexoTHERM 11 400V
- Capacity
- 11.27 kW
- SCOP
- 5.3 (W35)
- Sound power
- 48.5 dB(A)
- Refrigerant
- R410A
- Price
- £4,445.53–£7,026.19
WPE-I 12.1 Plus H 230V
Stiebel Eltron · 207184
- Capacity
- 2.7–11.6 kW
- SCOP
- 5.4 (W35)
- Sound power
- 40 dB(A)
- Refrigerant
- R290
More from Viessmann
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Vitocal 150
ASHP · 2.6–12 kW · SCOP 5 · BUS eligible
Vitocal 150
ASHP · 3–13.4 kW · SCOP 4.9 · BUS eligible
Other Ground Source (GSHP) heat pumps
WZSV
GSHP · 0.77–6 kW
WZSV
GSHP · 3.32 kW · BUS eligible
WZSV
GSHP · 4 kW · BUS eligible
WZSV
GSHP · 5.06 kW · BUS eligible
WZS
GSHP · 4.7 kW · BUS eligible
WZS
GSHP · 7.7 kW
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