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What is the Difference between an Oxygen Machine and a Concentrator?

What is the Difference between an Oxygen Machine and a Concentrator?

In recent years, the need for oxygen therapy has been on the rise due to various health conditions and respiratory illnesses. With this increased demand, many people have started exploring options for oxygen machines and concentrators. However, there seems to be some confusion regarding the difference between the two. In this blog post, we will take a closer look at oxygen machines and concentrators, their functionalities, and the key disparities between them.

Understanding Oxygen Machines and Concentrators

Before delving into the differences, let's first understand what these devices actually are. An oxygen machine, also known as an oxygen generator, is a medical device that produces oxygen by separating it from other gases in the air. This device typically features an oxygen compressor and a filter system. On the other hand, an oxygen concentrator is a specific type of oxygen machine that concentrates oxygen from the environment, usually by utilizing molecular sieve technology.

Functionality of Oxygen Machines

Oxygen machines work by extracting ambient air and purifying it for medical use. They filter out airborne particles, moisture, and other gases, leaving behind pure oxygen. These machines can provide an uninterrupted supply of oxygen, making them ideal for individuals who require oxygen therapy for extended periods or even around the clock. Oxygen machines are commonly used in healthcare settings, such as hospitals and clinics, as well as in home care.

Functionality of Oxygen Concentrators

Unlike oxygen machines, the primary function of oxygen concentrators is to concentrate and deliver purified oxygen. They work by absorbing nitrogen from the air and increasing the oxygen concentration by utilizing sieve beds. This concentrated oxygen is then delivered to the patient through a mask or nasal cannula. Oxygen concentrators are highly efficient and portable, making them suitable for patients who require supplemental oxygen on-the-go.

Key Differences Between Oxygen Machines and Concentrators

Now that we have a basic understanding of both oxygen machines and concentrators, let's highlight the key differences between the two:

Oxygen Production

Oxygen machines produce oxygen by separating it from other gases in the air, while concentrators primarily concentrate oxygen from the environment by removing nitrogen.


Oxygen machines are often bulky and not designed for easy mobility. In contrast, concentrators are portable and can be easily transported, allowing patients to continue their therapy while traveling or engaging in daily activities.

Power Supply

Oxygen machines usually require a direct source of power, such as electricity or batteries. On the other hand, concentrators can be operated by various power sources, including batteries, car adapters, or DC power supplies.

Oxygen Purity

Oxygen machines typically produce oxygen with a purity level of 90-95%, while concentrators can deliver higher purity levels, reaching up to 96-98% oxygen concentration.

In conclusion, while oxygen machines and concentrators serve the same purpose of providing supplemental oxygen, they differ in terms of functionality, portability, power supply, and oxygen purity. The choice between the two depends on individual needs, medical requirements, and lifestyle preferences. Whether you opt for an oxygen machine or a concentrator, it is important to consult with Lepu healthcare professional who can guide you in making the best decision for your oxygen therapy needs. They can assess your specific condition and recommend the most suitable equipment based on factors like portability, flow rate, and home environment.