Vitocal 350-A – ideal for modernisation

Take advantage of these benefits

  • High flow temperatures, therefore recommended for modernisation projects
  • Suitable for indoor and outdoor installation
  • Particularly quiet in night mode with reduced fan speed
  • High DHW convenience with temperatures up to 55 °C
  • Cascade capability for up to five heat pumps
  • Energy efficiency class A++ *
*Energy efficiency class as per EU regulation no. 811/2013 for heating, average climatic conditions - low temperature applications (W35)


Vitocal 350-A heat pump

Vitocal 350-A heat pump

Harmonises with older heating systems

The Vitocal 350-A air source heat pump utilises the free heat available in the ambient air. Its innovative electronics ensure high efficiency and provide a DHW temperature of 35 °C even when the outside temperature is only 2 °C.

They also provide a high flow temperature, which is necessary when running the pump with traditional radiators. For improved heat yields when modernising, it is therefore recommended to replace individual radiators with ultra-low temperature ones.

Space saving thanks to outdoor installation

The Vitocal 350-A can be installed either internally or externally. The three-stage radial fan in the heat pump, the flow-optimised air routing and the sound insulated casing make the appliance extremely quiet. During night operation the multi stage fan control unit reduces the fan speed, for additional noise reduction.

In the case of outdoor installation, Viessmann provides the accessories required for transferring the heat into the house. These are all perfectly matched, being from a single source.

EHPA seal of approval

EHPA seal of approval

The EHPA seal of approval serves as proof of the COP (Coefficient of Performance) for the heat pump according to the market incentive program.

The German EHPA quality seal commission certifies that the Viessmann heat pump Vitocal 350-A meets the requirements of the EHPA quality seal regulations.

Vitotronic 200

Operating convenience

Clear, comfortable, intelligent: The Vitotronic offers perfect functions for fast and exact control of every heating system.


Control Vitotronic 200 - Can also be operated via app via a smartphone at any time.

Vitoconnect 100 creates the connection

The Vitoconnect 100 interface is required to operate via the app. Retrofitting of earlier heat pumps of the Vitocal series (from 2010 onwards) is possible at any time.

Vitoconnect 100
ViCare App

ViCare App

The ViCare app allows the user to control their heating system via a smartphone. The operating status can be viewed at any time and, in the event of a fault, contact can be made quickly and easily with the installation company previously registered in the app.


A perfect match – System technology

"The whole is greater than the sum of its parts". Following this philosophy, Viessmann supplies more than high quality, reliable and effective heating components. In fact, all products are part of a matching total concept, where all components complement one another. After all, only perfect interaction between all system components can draw out the maximum potential of our innovative leading technology.

Viessmann system technology incorporates everything you need for a reliable and economical heating system: From the Vitotronic control unit with wireless remote control, powerful Vitocell DHW cylinders for the highest DHW convenience, right up to high grade solar thermal systems for cost effective central heating backup.

Product cross-section


Nominal heat output (kW)
10.6 to 18.5 kW
COP during heating operation
up to 3.6 (at air 2 ° C / water 35 ° C)
Energy efficiency class
10.6 kW: A ++ / 14.5 and 18.5 kW. A +, according to EU Regulation No. 811/2013 heating, average climate conditions - low temperature application (W35)
Single family homes, new builds and modernisation
Vitotronic 200 control unit with plain text graphic display, operation via Vitotrol App is possible
Water heating
Additional DHW for high DHW convenience.
Other features
Particularly suitable for modernisation through 65 ° C flow temperature, even at winter outside temperatures.
Produktschnitt Luft/Wasser-Wärmepumpe Vitocal 350-A


Heat pumps – quite straightforward

Our expert Carsten Kuhlmann explains in simple terms how a heat pump works and the physical principles behind it.


Where does ambient heat come from?

Carsten Kuhlmann explains where ambient heat comes from and how various different types of heat pumps make use of it.