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Viessmann Vitocal 250-A PRO
Specifications and technical data
✓ BUS eligibleAir Source (ASHP)CommercialR29039.5 kW
| Manufacturer | Viessmann |
|---|---|
| Model | Vitocal 250-A PRO |
| Model code | AWO-AC-AF 251.A40 |
| Heat pump type | Air Source (ASHP) All Air Source heat pumps → |
| Application | Commercial All Commercial heat pumps → |
| Refrigerant | R290 All R290 heat pumps → |
| Mode | Heating & cooling |
| Heating capacity | 39.5 kW |
| Max heating output (low temp) | 39.5 kW at A7/W35 |
| COP (heating) | 3.8 at A7/W35 |
| Heating flow temperature | up to 70 °C |
| Electrical supply | 380-415V (Three Phase) |
| Cooling capacity | 26 kW |
| Max cooling output (high temp) | 26 kW at A35/W7 |
| Dimensions (H×W×D) | 1570 × 1900 × 940 mm |
| Operational Weight | 550 kg |
| Sound power level | 69.8 dB(A) (Sound Power LW(A)) |
| Data added | 2026-07-02 |
| 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. | 011-1W0833_01 |
| MCS certification | ✓ MCS listed |
| MCS certificate no. | 011-1W0833_01 |
| MCS listing | View on MCS ↗ |
Check noise at a neighbour’s window (MCS 020 a) →
Viessmann Vitocal 250-A PRO is a 39.5 kW air source heat pump, providing heating and cooling, using R290 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.
Alternatives to consider
Three Air Source (ASHP) heat pumps from other manufacturers closest in capacity to this one.
EWYK-CZ
Daikin · EWYK040CZPA2
- Capacity
- 39.55 kW
- SCOP
- 4.74 (W35)
- Sound power
- 85 dB(A)
- Refrigerant
- R32
Thunder
Clivet · WiSAN-P 14.1
- Capacity
- 39.9 kW
- SCOP
- 4.51 (W35)
- Sound power
- 75 dB(A)
- Refrigerant
- R290
GMLW 35 Plus
Ochsner · 284749
- Capacity
- 40 kW
- SCOP
- 4.33 (W35)
- Sound power
- 61 dB(A)
- Refrigerant
- R407C
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