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x-change® dynamic brine/water heat pumps

The x-change brine/water heat pump is the heat source in the “Kermi system x-optimised”. It uses a geothermal collector or a geothermal probe with a heat transfer fluid (so-called brine) circulating in it to extract thermal energy from the earth and converts it into heating warmth.




Kermi x-change dynamic heat pumps: honoured with the 2018 Design Award
Kermi x-change dynamic heat pumps: honoured with the 2018 Red Dot Award
  • 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 brine/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”
Heat pump advice

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.

More information about sound levels and sound insulation for heat pumps

Optimise your own consumption

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

More information about optimising your own consumption

Combining a heat pump with solar panels

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

More information on Combining a heat pump with solar panels

Which heat pump is the right one?

Large or small property, single-family house or multi-family house – which heat pump is the right one for your own construction or modernisation project depends above all on the conditions in and around the house. Some rough basic data and classifications help in the selection process.

More information on the right heat pump

Cooling with a heat pump?

Whether air-to-water, brine-to-water or water-to-water heat pump – heat pumps can also be used to cool living spaces if the necessary technical requirements are met.

More information on cooling with the heat pump

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?