Kermi x-change dynamic water WW I Modulierende Wasser/Wasser-Wärmepumpe

Modulating x-change® dynamic water WW I water/water heat pump

The modulating, x-change dynamic water (water/water) heat pump extracts thermal energy from the ground water using an extraction and absorption well. Circulated through an intermediate heat exchanger (ground water station) in the heat transfer fluid on the secondary side (the so-called brine), the heat is transferred to the heat pump which then converts it into heat.

The x-change dynamic water is characterised by its extremely efficient operating mode, in that the scroll compressor, the heat source pump and the charge pump are controlled by the speed of rotation. This means there is an automatic output adjustment to the building's heat demand. The integrated highly efficient brine pump with expansion tank and flow sensor on the secondary side as well as the passive cooling station provide a high degree of integration and contribute to a significant reduction of the installation time. Low sound emissions due to vibration isolated compressor and addition sound-proofing mats on the continuous housing panel ensure virtually silent operation.

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


  • Energy efficiency class heat pump A++
  • Low operating costs thanks to a high COP value
  • Maximum flow temperature up to 63 °C
  • Silent operation due to an optimised construction
  • Including integrated x-center x40 controller with intuitive touch control and colour graphics display, weather controlled operation
  • Remote servicing via x-center x40 (without accessories)
  • Large application range of water/water heat pump
  • Modulation of the compressor, the primary and secondary circuit pump
  • Power to Heat: Intelligent use of excess PV electricity
  • Integrated electronic heat quantity recording incl. COP determination
  • Web-based remote control of the heat pump
  • Optionally with passive cooling function "pc"

Overview of state subsidy programmes from the market incentive programme:


x-change dynamic water WW I:

Building stock
Based promotion 4000 €
Innovation subsidy 2000 €
Load Management Bonus 500 €
APEE bonus + 20 %
Optimisation lump sum 600 €
total subsidy * 8400 €
New buildings
Innovation subsidy 4000 €
Load Management Bonus 500 €
total subsidy * 4500 €




further information about state subsidy programmes for Kermi x-change heat pumps

Kermi x-change dynamic water WW I Modulierende Wasser/Wasser-Wärmepumpe

x-center control

For an optimal result. And a regulated process.

The x-center controller controls the Kermi system x-optimised and guarantees efficient and resource-saving operation of the heating system by regulating the flow temperature. Equipped with a clearly arranged display, the x-center controller is proving to be extremely user-friendly in the process. We intentionally kept it easy to use and decided in favour of a intuitively identifiable screen design. Thanks to this user-oriented user interface with clear menu guidance, it is straightforward and really easy to use the Kermi system x-optimised. This means the device can be controlled without any problems after being given brief instructions when the system is commissioned.

Smart Home with x-center base

Heating control at home. Easy while out and about.

Simple and easy control of your heating system with your heat pump on your tablet.

Controlling the heat in your own home when you want and where you want - Kermi Smart Home makes it possible. The intelligent system for digital, location-independent control of the "Kermi system x-optimised" conveniently conducts all the components of the heating system via smartphone and tablet. Other devices such as home lighting or shutters can be incorporated into the system.

Using x-center base, the headquarters of Kermi Smart Home, you can easily control your x-change dynamic heat pumps while at home or while out and about. This allows you to control individual rooms as well as the entire heating system using timer programmes or scene creation, such as Holiday or Party modes. For intelligent living and maximum comfort for a sense of well-being.

Find out more

5 year system warranty

Finally the new Kermi heating system has been installed. Or the Kermi ventilation system. Nothing left to stop you feeling cosy at home. With our 5-year system warranty, we are happy to prove the quality of our products and our service promise to you.

Just three steps to a 5 year system warranty:

1. Have the Kermi system installed by a specialist company
2. Have Kermi Customer Service commission the system (or in the case of ventilation systems, a specialist company)
3. Annual servicing by Kermi Customer Service or by a specialist company

Heat pump consultation

Kermi consultation and information

Sound level and sound insulation

With their exceptionally effective sound and vibration absorption Kermi heat pumps generate scarcely more noise emission than a ticking alarm clock.

Further information about sound level and sound insulation for heat pumps

Kermi consultation and information

Optimise your own consumption

Save electricity costs long term with Kermi and electricity storage systems by Fenecon.

Further information about optimising your own consumption

Installer in front of Kermi x-change fresh drinking water heat pump

APF calculator

The Annual COP calculator.

Here you can calculate the annual performance factor of Kermi heat pumps according to VDI 4650.
The APF is the basis for subsidies according to the various market incentive programmes.

For APF calculator

Geothermal collector Kermi x-change heat pump

Interesting facts

Learn more about the x-change heat pumps? The following topics are summarized for you:

x-change heat pumps  benefits

The heat pump - For the environment and for the future

Operating mode of x-change heat pumps

Renovating with the x-change heat pumps

What do the energy saving regulations say?

Kermi: Clear advantages. Complete service.

Comprehensive Kermi system x-optimised

  • Energy savings up to 34 %
  • Optimally matched components
  • Everything from a single source, from planning to commissioning

This means "Kermi system x-optimised"

12 good reasons for Kermi system x-optimised

Kermi - Zertifizierte Qualität

Certified quality

  • Kermi is certified according to DIN EN ISO 9001;2008, 14001:2004 and 50001:2011
  • Components comply with current standards and directives
  • Regular monitoring of core components by independent testing institutes
Kermi download technical data sets

Support with order process and planning

  • Support with order preparation
  • Support with a wide range of services during system planning
  • Dimensioning data set for liNear software
  • Comprehensive software for dimensioning rooms
  • Comprehensive information material
  • Extensive technical Internet portal
Kermi x-net C11: with outstanding customer service

Complete customer service

  • Nationwide service team as well as field service teams for fast on-site assistance
  • Competent in-house service team for fast telephone assistance
  • Professional, unbureaucratic processing of complaints
  • Detailed initial training on-site
  • Detailed planning and design consultation
Kermi system knowledge down to the last detail

System knowledge in great detail

  • Carefully engineered system technology developed in-house for easier, fast, safe work
  • Many Kermi innovations
  • Kermi special solutions for practical application by tradespeople

Links for specialist partners

Image data

Kermi image data for specialist partners

not available

Colors, certificates etc.

Kermi further information for specialist partners

IT solutions

Kermi EDP solutions for specialist partners
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