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Viessmann
Viessmann
Vitocal 250-A
Vitocal 250-A
Viessmann
Vitocal 250-A
A
Air-to-Water
Split
The Vitocal 250A delivers outstanding efficiency for residential heating.
With its natural R290 refrigerant and ultraquiet operation, it's built for
comfort and sustainability.
Capacity
4–10 kW
Noise Level
45 dB(A)
Refrigerant
R290
SCOP
5.1
BEG eligible
— up to 70% subsidy possible
Technical Specification
Subsidies & Costs
Compatibility & Use cases
Documents
Performance & Efficiency
Heating Capacity (range kW)
4–10 kW
Cooling Capacity (kW)
10.65 kW
Hot Water Capacity (kW)
—
COP at A7/W35
5.5
COP at A2/W35
4.5
COP at A-7/W35
3.1
SCOP
5.1
Energy Efficiency Class (heating)
A+++
Energy Efficiency Class (hot water)
—
Seasonal Performance Factor (SPF) Reference
5.01
Min. Outdoor Temperature Operating Limit
-22 °C
Refrigerant & Environment
Refrigerant
R290
Charge Amount (kg)
1.8 kg
GWP
3
CO₂ Equivalent
5.4 kg CO₂e
Natural Refrigerant
Yes
Temperatures
Max. Flow Temperature
70 °C
Min. Flow Temperature
20 °C
Operating Range Outdoor Temp. (from/to)
-22 °C to +46 °C
Compatible Heating Systems
Underfloor, Radiator, Fan coils
Electrical
Electrical Power Input (kW)
3.5 kW
Connection (230V/400V)
400V / 3~
Fuse Rating (A)
16 A
Max. Inrush Current
45 A
SG-Ready / Smart Grid
Yes
Acoustics
Sound Power Level Outdoor Unit dB(A)
45 dB(A)
Sound Pressure Level at 3m Distance dB(A)
39 dB(A)
Sound Power Level Indoor Unit dB(A)
—
Night/Whisper Mode Available
Yes
Dimensions & Weight
Outdoor Unit: H × W × D (mm)
1350 × 990 × 450 mm
Indoor Unit: H × W × D (mm)
850 × 600 × 400 mm
Weight Outdoor (kg)
135 kg
Weight Indoor (kg)
65 kg
Min. Installation Footprint
1.2 m × 1.0 m
Wall Clearances
Min. 300mm all sides
Connections
Heating Flow/Return (Ø)
1" BSP
Hot Water Connection (Ø)
—
Condensate Drain
20 mm
Refrigerant Lines (split only: max. length, max. height difference)
N/A (Monoblock)
Technical Specification
Subsidies & Costs
Compatibility & Use cases
Documents
Performance & Efficiency
Heating Capacity (range kW)
4–10 kW
Cooling Capacity (kW)
10.65 kW
Hot Water Capacity (kW)
—
COP at A7/W35
5.5
COP at A2/W35
4.5
COP at A-7/W35
3.1
SCOP
5.1
Energy Efficiency Class (heating)
A+++
Energy Efficiency Class (hot water)
—
Seasonal Performance Factor (SPF) Reference
5.01
Min. Outdoor Temperature Operating Limit
-22 °C
Refrigerant & Environment
Refrigerant
R290
Charge Amount (kg)
1.8 kg
GWP
3
CO₂ Equivalent
5.4 kg CO₂e
Natural Refrigerant
Yes
Temperatures
Max. Flow Temperature
70 °C
Min. Flow Temperature
20 °C
Operating Range Outdoor Temp. (from/to)
-22 °C to +46 °C
Compatible Heating Systems
Underfloor, Radiator, Fan coils
Electrical
Electrical Power Input (kW)
3.5 kW
Connection (230V/400V)
400V / 3~
Fuse Rating (A)
16 A
Max. Inrush Current
45 A
SG-Ready / Smart Grid
Yes
Acoustics
Sound Power Level Outdoor Unit dB(A)
45 dB(A)
Sound Pressure Level at 3m Distance dB(A)
39 dB(A)
Sound Power Level Indoor Unit dB(A)
—
Night/Whisper Mode Available
Yes
Dimensions & Weight
Outdoor Unit: H × W × D (mm)
1350 × 990 × 450 mm
Indoor Unit: H × W × D (mm)
850 × 600 × 400 mm
Weight Outdoor (kg)
135 kg
Weight Indoor (kg)
65 kg
Min. Installation Footprint
1.2 m × 1.0 m
Wall Clearances
Min. 300mm all sides
Alle Systeme normal
Language
© 2025 Bauhow Consulting GmbH
Alle Systeme normal
Language
© 2025 Bauhow Consulting GmbH
Alle Systeme normal
Language
© 2025 Bauhow Consulting GmbH