Free delivery for orders over €150!
NEXT DAY SHIPPING with Express!
30-DAY RETURNS WHOLESALE

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

SKU: KR4.00
€1.400,00
4 interest-free payments or as low as €350,00 with See if you qualify

Still need help? Contact us!

Delivery Icon Order in the next 18 hours and get it by Tuesday, Oct 14!

Free shipping over €150

We offer price-match

Hassle-Free Returns

The Kröber 4.0 is an exceptionally quiet (31 dBA) and compact 5-liter home oxygen concentrator engineered in Germany for total patient comfort. Weighing just 14.2 kg, this medical-grade device provides reliable continuous flow and high purity for active patients who require 24/7 respiratory support without the intrusive noise of traditional machines.

  • Ultra-Silent 31 dBA – The quietest stationary unit in its class, specifically designed for undisturbed sleep.
  • German Reliability – Built with high-end clinical components to ensure robust, long-term performance and durability.
  • Precise Flow Control – Offers unique increments of 0.1 LPM for highly accurate therapy titration tailored to your needs.
  • Advanced Clinical Monitoring – Integrated purity and flow sensors provide constant real-time feedback for maximum safety.
  • Modular Design – Simplified internal layout reduces long-term maintenance requirements and professional service costs.

The Kröber 4.0 represents the peak of home oxygen technology, combining silent operation with unmatched German precision.

In The Box 📦

  • Kröber 4.0 Home Oxygen Concentrator
  • External Dust Filter (Pre-installed)
  • Internal Fine Filter (Pre-installed)
  • Humidifier Bottle
  • Nasal Cannula
  • Oxygen Tubing
  • Power Cord (EU Plug)
  • User Manual

Setup & Use 📘

Position the unit at least 15 cm away from walls in a ventilated area. Connect to a wall outlet and turn the power on. Select your prescribed LPM via the digital control panel. Attach your humidifier bottle and cannula. Wash the external dust filter once a week and replace the fine filter annually to maintain peak performance.

The Quietest Standard in German Home Oxygen

Experience the peace of mind that comes with the Kröber 4.0. This medical-grade concentrator is designed to integrate seamlessly into your daily life, offering the highest level of silence and reliability available. Its innovative engineering ensures it stays quiet even at full output, making it the ideal partner for continuous home therapy.

Industry-Leading 31 dBA Silence

At just 31 decibels, the Kröber 4.0 is virtually silent during operation. It is specifically built to remove the noise barrier of oxygen therapy, allowing you and your family to sleep, watch TV, and converse without the constant distraction of a loud motor.

High-Precision Titration

Unlike standard machines with large steps, this device allows for adjustments in ultra-fine 0.1 LPM increments. This precision ensures you receive the exact oxygen volume your body needs, providing a more tailored and effective treatment experience.

Lightweight & Efficient Build

Weighing only 14.2 kg, this concentrator is significantly lighter and easier to move than many competitors. The German-made compressor is also optimized for energy efficiency, helping you keep electricity costs low while maintaining 24/7 therapy reliability.

Features

Digital Purity Monitoring

Digital Purity Monitoring

An integrated clinical sensor constantly analyzes the oxygen output concentration. If purity levels drop below the medical standard, the device provides immediate visual and audible alerts to ensure your safety.

Clear Digital Interface

Clear Digital Interface

The high-contrast backlit display clearly shows current flow settings, total operating hours, and machine status, providing total visibility into your therapy even in complete darkness.

Effortless Home Mobility

Effortless Home Mobility

Equipped with premium smooth-rolling casters and an ergonomic top handle, the Kröber 4.0 can be glided across carpets and hard floors with minimal effort, providing high mobility throughout your home.

Durable Sieve Bed Technology

Durable Sieve Bed Technology

Using high-quality zeolite material, the internal sieve beds are engineered for extreme longevity. This ensures the device produces high-purity oxygen for years before requiring professional service.

Low Energy Consumption

Low Energy Consumption

The Kröber 4.0 is designed with advanced internal energy management, making it one of the most cost-effective stationary oxygen units to operate around the clock for 24/7 therapy.

USB Service & Diagnostics

USB Service & Diagnostics

The device includes a dedicated service port that allows technicians to perform instant diagnostics and software updates, ensuring your machine always operates with the latest clinical optimizations.

See more

Over 2500+ Positive Reviews From Our Customers