Vitocal 300-A – efficient heating with air

Take advantage of these benefits

  • Air/water heat pump for heating and cooling with installation inside or outside
  • "active cooling" for pleasant room temperature control in summer
  • Efficient defrosting through circut reversal
  • Low operating noise through radial fan and reduced fan speed during night operation
  • Energy efficiency class*: A++


*in the case of low temperature applications (35 °C)

Heat pump control unit for remote control operation and monitoringTop technology for top performance

The Vitocal 300-A is the first air/water heat pump with digital scroll technology and an electronic bi-flow expansion valve. This means it achieves an extremely high Coefficient of Performance of 3.5 (air 2 °C/ water 35 °C) and therefore high seasonal performance factors too. What's more, it accounts for the particularly reliable heat supply of the Vitocal 300-A, as well as providing significantly lower running costs.

RCD: Always as much heat as you need

RCD stands for Refrigerant Cycle Diagnostic system. This is responsible for permanently monitoring the heat demand and the output made available by the Vitocal 300-A. It uses this information to match the two and can therefore achieve the highest level of efficiency at every operating point

Not only quiet at night

Particularly quiet operation is ensured by a radial fan with variable speed control and a reduced fan speed for night operation.

Everything you need

Every household has different heat demands and the conditions for installing a heat pump vary. The range of accessories for the Vitocal 300-A is suitably flexible and comprehensive. Subject to demand, the heat pump can be supplied fully equipped. This means the heating circuit pump, expansion vessel and safety equipment have already been fully fitted. Even the modular electric instantaneous heater can be easily integrated. In conclusion, Viessmann has the complete product range to meet the demands of any installation you require – inside or out.

Monitor and control from wherever you are

With the new control unit in the Vitocal 300-A, you can simply connect your heat pump to the Vitocom 100. This gives you the option of conveniently operating your heating system via your mobile phone if you wish.

Cooling – no problem

Thanks to its reversible operation, the Vitocal 300-A can also be used for cooling. Convectors or surface cooling systems with cooling capacity of up to 8.6 kW give you the flexibility to make your living area even more pleasant.

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 & Vitotrol Plus 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.

Vitotrol Plus App

The Vitotrol Plus app allows the remote control of all heating circuits in a heating system. It is used to set operating programs, setpoints and time programs. Operating and consumption data are also displayed. It also allows the display of solar yields.


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)
3 to 9 kW
COP during heating operation
up to 5.0 (air 7 ° C / water 35 ° C)
Energy efficiency class
A ++ * according to EU Regulation No. 811/2013 heating, average climate conditions -. Low temperature application (W35)
Homes, new construction and modernisation, bivalent systems
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
Reversible air / water heat pump for heating and cooling for indoor and outdoor use.
Product cross-section Air/water heat pump Vitocal 300-A