iDM Hygienik

iDM Hygienik

Hot water refreshes you when you take your morning shower and relaxes you when you take a hot bath after a long day. And, above all, hot water symbolises well-being, relaxation and cleanliness. However, this can be a misconception. All manner of germs can accumulate in conventional hot water tanks. The iDM energy family has been setting its own standards in terms hygiene for more than 20 years with the Hygienik fresh water system: fresh water heating according to the flow principle, with large stainless steel heat exchangers, provides clean, healthy water for your home. You will see for yourself: Hygienik buffer storage tanks with fresh water technology will turn showering into your family’s favourite activity.
Solar collectors can also be connected to the Hygienik system: the flange with an internal heat exchanger can accommodate small solar plants (with a collector surface up to 12m2).


The Hygienik is a 2-in-1 layered storage tank: hot heating water is available for heating the drinking water in the upper section. The separate, lower section accommodates the buffer storage tank for low-temperature heating. When the hot water in the shower, basin or sink is switched on, a plate exchanger on the outside of the Hygienik system transfers the heat from the heating water to the drinking water; fast and hygienically. Your benefits:
you are using the energy from the heat pump twice, are not affected by Legionella bacteria and can take a relaxing shower or bath. Let your energy supply bring more quality to your life. Its flexibility means it is compatible with any heating system, regardless of whether wood, gas, pellets, solar, heat pump, oil or any combination of different systems; the appropriate connection is available for every system. The iDM layered storage tank technology permits to make improved use of the heat content and therefore helps to reduce emissions to simultaneously increase the service life of your oil or gas tank.

Hygienik layered storage tank with fresh water technology

The Hygienik system ensures a supply of hot water together with hot gas charging technology (HGL). The HGL pipe delivers temperatures of up to 60°C in the upper part of the buffer tank, while the majority of the energy is used for the heating circuit at around 35°C.

The iDM fresh water station (an external plate heat exchanger) ensures a comforting supply of hygienic hot water in a matter of seconds.


The iDM Hygienik is available in several storage tank sizes for a host of areas of application:

Typ Area of application
Hygienik 500 lt. Detached house
Hygienik 825 lt. Solar plants, heat pumps
Hygienik 1000 lt. Solar plants, heat pumps, blocks of flats
Hygienik 1500 lt. Guest houses/bed and breakfast establishments, biomass, heating systems
Hygienik 2000 lt. Construction

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