Vitocal 350-A

Viessmann Light Commercial
Vitocal 350-A
Air-Source Heat Pumps

Vitocal 350-A

Viessmann Vitocal 350‑A – High Temperature Air Source Heat Pump
Powerful air-to-water heat pump for indoor or outdoor installation, delivering 12.7 to 20.6 kW with flow temperatures up to 65°C. Designed specifically for renovation projects, radiator heating systems, and applications requiring high domestic hot water comfort.

Features

  • Ideal for Modernisation Projects

    Designed specifically for retrofit applications Suitable for existing radiator heating systems High flow temperatures minimize the need for system modifications Excellent replacement for conventional boilers
  • High Flow Temperature Performance

    Delivers flow temperatures up to 65°C Maintains high temperatures even at outdoor temperatures down to –10°C Suitable for: Existing radiators Domestic hot water production Hybrid heating systems
  • Enhanced Vapour Injection (EVI) Technology

    Improves performance at low outdoor temperatures Supports higher flow temperatures Enhances year-round efficiency Reliable performance in cold climates
  • High Domestic Hot Water Comfort

    Water temperatures up to 55°C within the DHW cylinder Excellent domestic hot water performance Suitable for families and buildings with higher hot water demand
  • High Energy Efficiency

    COP up to 4.0 (A7/W35) Low operating costs Efficient renewable heating from ambient air Strong seasonal performance
  • Refrigerant Cycle Diagnostic (RCD) System

    Advanced performance monitoring Works together with the electronic expansion valve Continuously optimizes refrigeration circuit operation Maximizes efficiency under varying conditions

Technical Documents

Document NameDescriptionDocument TypeLanguageAction
Technology Brochure - Heating with Air and Geothermal EnergyPDFGerman Download

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Two-stage air source heat pump for outdoor installation. Nominal heating power: 13.2 – 55.8 kW

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