Home » Shop » Oxygen Concentrators » Krober 4.0 Oxygen Concentrator 5l/min, 93-95% Pure Oxygen, 3 Years Warranty. Made In Germany

Krober 4.0 Oxygen Concentrator 5l/min, 93-95% Pure Oxygen, 3 Years Warranty. Made In Germany

 1,400.00 (Free EU/UK Shipping)

Two words describe best the German-made Kröber 4.0 oxygen concentrator – silent and cost-efficient. This unit is so quiet that you’ll hardly even notice it standing by your side and providing the oxygen flow you need throughout your therapy. Easy to operate and read its display, the Kröber 4.0 comes with a convenient illuminated digital display and advanced tech inside its heart, making it one of the most silent and reliable concentrators currently available on the market.

Oxygen Concentration: 93-95%
Oxygen Flow Rate: up to 5 liters per minute




Kröber 4.0 Oxygen Concentrator
– 5 litres per minute

Featuring one of the most advanced oxygen concetrator technology out there, the Kroeber 4.0 is one of the most popular oxygen therapy units available from the leading German manufacturer of oxygen concentrators. Silent, precise and reliable, the Kröber 4.0 oxygen concentrator is the best choice if you are looking for a machine that you can set up and forget. The concentrator produces only 31 dB of noise, making it whisper quiet, thanks to the advanced technology it features.

This stationary concentrator is also easy to move around from room to room thanks to its wheels and handle on top. The unit features an easy-to-read illuminated display which shows important therapy data such as oxygen volume, oxygen concentration and temperature.

In addition, the Kröber 4.0 comes standard with two easy to change filters: an input filter and a dust filter.



  • Up to 5 litres per minute oxygen delivery
  • Whisper silent – one of the most quiet oxygen concentrators in manufacturing
  • Same low sound output on every oxygen setting (31 dB)
  • Added mobility -easily moved from one room to another
  • Easy to read digital display
  • Internal sensors keeping track of oxygen concentration, oxygen volume and temperature
  • Easy maintenance

Additional features

  • Modular components
  • Easily accessible filter and fuses
  • USB – interface
  • Sleek, modern design
  • New, innovative measuring sensor
  • Built-in flow adjustment
  • 30.000 hours warranty for all functional parts
  • Microprocessor-controlled
  • Made in Germany

Related mask packs and accessories:

Oxygen mask

Nasal Cannula – 2 m

Nasal Cannula – 5 m


Package includes:

Krober main unit
User manual
Humidifier, refillable
Nasal cannula 2 m and 5 m

Technical specifications

Technical specifications

Operating power230V/50Hz
Operating temperature+10- +40
Sound level31 dB
Power consumption295 W
Dust filterincluded (in the rear of the device)
Fine filterincluded (in the rear of the device)
Fusesmains 230V 3,15 A H 250V

internal 1XT1,0 A L 250V

Weight16 kg
Size600x290x400 mm
Manufacturer´s warranty30.000 operating hours (max. 5 years)
Flow adjustment0-5 l/min
02-concentration1 to 3 lpm 95% -3%
3 to 4 lpm 93% +/-3%
4 to 5 lpm 85% +/-3%


Reviews (3)


  1. Aloïs Toussaint

    This German-made oxygen concentrator is ultra quiet and easy to move around around the bed. Germany knows how to make oxygen equipment for sure. many thanks for the immediate dispatch after my order!

  2. Olsen

    Nice machine at a nice price. Bought it from cpapeuropa with 1-day delivery and it arrived as promised, packaged with all necessary accessories. Thanks guys

  3. Albrecht E

    The Krober 4 comes with a nice digital display, quiet operation and oxygen settiing on demand, ranging from 0.1 to 5 LPM. Not giving 5 stars only because of its price 🙂

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