Vitocal 150-A (AWO-M-E-AC-AF 151.A16) 16kW

£8,330.96 inc VAT

Vitocal 150‑A Air Source Heat Pump.

Type AWO-M-E-AC-AF 151.A

Heat pump with electric drive in monoblock version with outdoor and indoor unit:

  • For room heating/cooling and DHW heating, up to 70 °C flow temperature
  • Monoblock indoor unit with heat pump control unit
  • High efficiency circulation pump for the secondary circuit
  • 4-3-way diverter valve and safety assembly
  • Integral instantaneous heating water heater
  • Integral buffer cylinder and overflow valve

Heat pump control unit for weather-compensated operation.

  • 7-inch colour touchscreen with energy cockpit
  • WiFi hotspot for local service without internet connection
  • Internet connection via WiFi
  • Control of a DHW circulation pump
  • Control of an instantaneous heating water heater
  • Active cooling control function
  • Integral heat meter
  • Setting of low-noise mode for the outdoor unit
  • Optimised energy management, e.g. in conjunction with photovoltaic system, power storage system
  • Display of energy flows in the ViCare app and ViGuide

AF Version:

  • With integral electric ribbon heater in the condensate pan
  • Permissible operating pressure: Heating water 3 bar (0.3 MPa)
  • Colour of indoor unit: Vitopearlwhite
  • Colour of outdoor unit: Vitosilver
  • Low running costs thanks to high COP (coefficient of performance) to EN 14511: Up to 5.0 at A7/W35
  • Output control and DC inverter for high efficiency in partial load operation
  • A maximum flow temperature of up to 70 °C at an outside temperature of -10 °C enables use in both new build and modernisation projects.
  • Self-optimising control of the flow rate via Viessmann Hydro AutoControl
  • Environmentally responsible, natural refrigerant R290 with a particularly low GWP of 0 (GWP = Global Warming Potential)
  • Convenient reversible design for heating and cooling
  • Especially quiet operation thanks to Advanced Acoustic Design (AAD)
  • Web-enabled through integral WiFi or service link
  • Operation, optimisation, maintenance and service via ViCare app and ViGuide
  • Guided commissioning via ViGuide

Standard delivery:

Complete heat pump in monoblock version, comprising an indoor and outdoor unit.

Indoor unit:

  • Integral 4/3-way valve for central heating/DHW heating/bypass
  • Integral high efficiency circulation pump for the secondary circuit
  • Integral instantaneous heating water heater
  • Integral 16 litre buffer cylinder
  • Integral safety valve and digital pressure gauge
  • Weather-compensated heat pump control unit with outside temperature sensor
  • Flow sensor
  • Wall mounting bracket, standard connection pipes
  • 10 l diaphragm expansion vessel

Outdoor unit:

  • Inverter-controlled compressor, 4-way diverter valve, electronic expansion valve, evaporator, condenser, EC fan
  • Factory-filled with refrigerant R290
  • Heating water filter upstream of condenser
  • Transport aid for outdoor unit
  • AF version: With integral electric ribbon heater for the condensate pan

Important Notes.

  • Heat pumps must be commissioned by Viessmann Technical Service or a specialist heat pump contractor certified by Viessmann
  • A hydraulic connection set must also be ordered to install the appliances; see "Accessories"
  • If the heat pump is being installed to modernise a heating system, a dirt separator with magnet is essential; see "Accessories"
Vitocal 150 A10 A13 A16
Heating Output 7.3-9.7 8.1-11.1 9.1-12.4 kW
Coefficient of performance at A7 5.0 4.9 4.9
Min./max. output range A7 3.6 - 12.0 3.0 - 13.4 3.3 - 14.9 kW
Flow Temperature 70 70 70 °C
Sound Power Level 59 59 59 dB(A)
Cooling Capacity 9.6 11.0 13.2 kW
Energy efficiency ratio (EER) 4.4 4.0 3.6
Max. cooling capacity 12.0 14.0 17.0 kW
Indoor unit width 450 450 450 mm
Indoor unit height 920 920 920 mm
Indoor unit length 360 360 360 mm
Indoor unit weight 47 47 47 kG
Outdoor unit width 1144 1144 1144 mm
Outdoor unit height 1382 1382 1382 mm
Outdoor unit length 600 600 600 mm
Outdoor unit weight 191 191 191 kG
Energy efficiency ƞs at W35 190 178 178 %
Energy efficiency ƞs at W55 145 141 141 %
Rated heating output A2/W35 5.8 6.7 7.6 kW
Coefficient of performance at A2 4.1 3.8 3.8
Min./max. output range A2 2.2-11.0 2.6-12.3 3.0-13.7 kW

  • Coefficient of performance (COP) at operating point A7/W35 to EN 14511 at rated heating output
  • Min./max. output range at operating point A7/W35
  • Total sound power level measurement with reference to EN ISO 12102/EN ISO 9614-2, accuracy class 3 in night mode
  • Cooling capacity and EER at operating point A35/W18 to EN 14511
  • Energy efficiency ƞs: Heating performance data in line with Commission Regulation (EU) No 813/2013 under average climatic conditions for low (W35) and medium (W55) temperature applications

Mobile applications and energy management systems.

Communication technology.

ViCare app – mobile applications for system users:

  • Mobile operation of the heating system for heating and DHW.
  • Assistance functions and fault display with option for direct connection to a contractor for service requests.

For more information on system requirements and ViCare app registration and usage, see

Tools for service, maintenance and commissioning.

ViGuide – mobile applications for trade partners:

  • Service and maintenance with ViGuide for optimising workflows in the Viessmann trade partner's business.
  • Ensures customer-friendly online service for the system user, provided they have enabled service via the ViCare app.
  • Straightforward and efficient commissioning of heat generators with integral communication module and battery storage systems, performed by heating contractors using Viguide.
  • In addition to the free version, ViGuide Plus and ViGuide Pro are also available as paid-for versions with additional analysis, remote maintenance and optimisation functions.

For more information on system requirements and ViGuide registration and usage, see

Energy management systems.

Viessmann energy management:

  • Viessmann energy management is integrated into the latest generation of Viessmann heat pumps and energy storage units
  • It enables balanced operation of the components in the house that generate, consume or store electricity.
  • The focus is on optimising self-consumption of self-generated electricity from photovoltaic systems.
  • The energy management system provides extended information about electricity flows and also CO2 savings.
  • If desired, customers can add further optimisation levels in the ViCare app.

For more information on the system requirements, the functions and use, see

Buying into Viessmann.

Viessmann Vitocal heat pumps provide customers with the comfort and peace of mind of a free parts and labour repair service subject to the terms and conditions below and the warranty period of your heat pump.
During the period of the warranty, Viessmann will at their option, repair or replace a heat pump free of charge where it suffers a mechanical or an electrical breakdown as a result of defective workmanship or materials, subject to the following conditions and exclusions.

Warranty qualification requirements

For standard warranty of 2 years, you or your installer can register the installation, using the online option available at

Great Britain:

In order for your heat pump to qualify for a warranty longer than 2 years, your installation must be registered with Viessmann within 30 days, the model must be valid for a longer warranty and must be installed by a Viessmann Trained Installer.
For the sale of extended warranties, your heat pump installer must be registered as trained by Viessmann, your installer must register your installation within 30 days using the online option available and you must pay for the extended warranty.

Viessmann Warranty Overview

Return of Goods & Warranty Claims.

We very much hope you will be happy with your products, however we do understand items sometimes need to be returned.
Condition is all important, an item should have been treated in the same way as if it was on sale in a shop, unopened and unused with seals intact.


Our returns policy can be found here.

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