x-change® dynamic AW I

More efficient and sustainable. The modulating x-change dynamic AW I air/water heat pump is bound to impress thanks to its extremely efficient and virtually silent operation.

This is made possible by a new and innovative EPP housing design along with the latest radial fan technology, which includes a whisper mode and a large modulation range for the compressor, fan, and charge pump. Together with the cooling circuit featuring multiple insulation and triple sound proofing, the high-quality lower housing section ensures very low sound emissions. By reversing the process, the “ac” variant can modulate to provide cooling output.

The x-change dynamic is equipped with the x-center x40 control.

Technical data
Documents and service
Tools and apps

System benefits

  • Heat pump energy efficiency class A+++

  • Low operating costs thanks to a very high COP value

  • Maximum flow temperature of up to 63 °C

  • Modulation of the compressor, radial fan, and charge pump

  • Quiet operation thanks to an optimised radial fan design with whisper mode

  • Included: integrated x-center x40 controller with intuitive touch control and colour graphics display, weather-controlled operation

  • Remote servicing via x-center x40 (without accessories)

  • Condensate tray heating integrated as standard through the cooling circuit for efficient defrosting

  • Power to Heat: intelligent use of excess solar-generated electricity

  • Integrated electronic heat quantity recording including COP determination

  • Web-based remote control of the heat pump

  • Optionally available with active cooling function  “ac”

For team players

The perfect addition

x-flair heat pump radiator

x-change dynamic pro AW E air/water heat pump for outdoor installation

The x-change heat pump


Sound level and sound insulation

With their exceptionally effective sound attenuation and vibration damping, our heat pumps are hardly any louder than a ticking alarm clock.

Optimise your own consumption

Reduce your electricity costs by combining a solar system and electrical energy storage unit with an x-change heat pump.

Will the heat pump be used for cooling?

Provided that the necessary technical requirements are met, heat pumps can also be used to cool living spaces, regardless of whether they take the form of an air-to-water, brine-to-water, or water-to-water heat pump.

Combine a heat pump with solar panels

It makes perfect sense to combine a heat pump with a solar panel system: Heat pumps need conventional electricity to operate – a solar panel system generates electricity from solar energy. And our x-change dynamic heat pumps have an integrated solar panel interface as standard.

Which heat pump is the right one?

Heat pumps can be used in large or small properties, detached houses, and blocks of flats – but deciding which one is right for your own construction or modernisation project primarily depends on the conditions in and around the building. There are a few basic details and criteria that can help you with the selection process.

Heat pump subsidies

New subsidy rates for heat pumps as of 2021! The most important information you need to know about the new subsidy programme.

Annual COP calculator

Here you can calculate the annual COP of Kermi heat pumps according to VDI 4650.
The annual COP is the basis on which subsidies are awarded under the various market incentive programmes.

What you need to know

Want to know more about x-change heat pumps?

Technical data

x-change dynamic AW I air/water heat pump for indoor installation
Energy source Air
Installation site Inside
Function Heating / optional active cooling
Heat output range (kW) 4–16 (at A2/W35)
COP (tested in compliance with EN 14511:2011) Up to 4.21 (A2/W35)
Cooling output range (kW) 6.5–16.5 (A35/W18)
Dimensions W x D x H (mm) 1045 x 770 x 1770
SG ready Yes
Energy efficiency class at 35 °C A+++



Technical information


We are proud to present our latest images, which you can view here.


All Kermi product and installation videos are also available for you to watch on YouTube whenever you like.

Customer service

Quotation and planning service for x-change heat pump/x-center control

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