When you choose a home oxygen concentrator, you will be confused by the price, brand, 3-liter machine, 5-liter machine and other information. After reading this purchase guide, I hope it can help you

I) Principle of home oxygen concentrator

The home oxygen concentrator adopts the PSA pressure swing adsorption principle, uses a compressor to compress the air, and passes through a molecular sieve. The adsorption of nitrogen and oxygen is different, and the nitrogen is separated. It is pure physical oxygen production, without consumables and waste gas

So

The core components of the oxygen concentrator are: compressor, molecular sieve

The principle of the oxygen concentrator is: physical oxygen production, no raw material consumables

II) Classification of home oxygen concentrators

Divided into STATIONAL OXYGEN CONCENTRATORS and PORTABLE OXYGEN CONCNETRATOR

1) stationary oxygen generator machines are divided into 1-liter, 2-liter, 3-liter, 5-liter, and 10-liter machines according to the flow rate (the flow rate here does not refer to the maximum adjustable flow rate of the machine, but the maximum flow rate to ensure the oxygen concentration of 90% standard)

The flow rate can be adjusted from 1 to 7 liters, and the oxygen concentration is only 90% when it is 1 liter.

The flow rate can be adjusted from 1 to 10 liters, and the oxygen concentration is above 90%, so this is a 10-liter oxygen concentrator.

In terms of price, generally 1-2 liter oxygen concentrators are within 500 US dollars, 3 liter oxygen concentrators are around 1000-2000 US dollars, 5 liter oxygen concentrators range from 3000-5000 US dollars, and 10 liter oxygen concentrators are more expensive.

2) Portable oxygen concentrators are developed to solve the problem of carrying oxygen for outdoor use. They have the same principle as stationary oxygen machines, but because of their small size, they cannot produce oxygen continuously. They can only pulse, follow the human inhalation action, and instantly spray a rated amount of oxygen. They are divided into 3, 5, 6, 7, etc. Because pulse oxygen absorption has a higher oxygen absorption efficiency, usually a 3-speed machine is equivalent to a 3-liter stationary  oxygen machine, and a 5-speed machine is equivalent to a 5-liter stationary  oxygen machine.

The use scenarios of portable oxygen concentrators are mainly temporary oxygen inhalation when going out and oxygen inhalation when traveling in plateaus。

2024 Newest DEDAKJ up to 9Liter Lightweight Battery Portable Oxygen Concentrator Continuous Flow Mini Size Mobile Oxygen Concentrator for Travel

KPA portable oxygen concentrator, 1-8 liter adjustable, 1.4 kgs 

III) Key points for purchasing oxygen concentrators

1) Flow rate: leave redundancy according to the oxygen flow rate required by the user. For example, if you usually need to inhale 1.5 liters to 2 liters, it is okay to choose a 3-liter machine; if you need to inhale 2-3 liters, it is recommended to choose a 5-liter oxygen concentrator.

2) Time: Consider the operating performance of the oxygen concentrator according to the length of time the user needs to inhale oxygen every day. If the number of hours per day is usually a few hours, a 3-liter oxygen concentrator can be considered; if the number of hours exceeds 10 hours, a 5-liter oxygen concentrator is recommended.

3) Noise: If the user is sensitive to the noise of the machine, the noise of the machine should be considered. Generally, the noise of oxygen concentrators is 50-60 decibels, while the silent oxygen concentrator can reach 40-45 decibels. The latest four-cylinder compressor can even reach more than 30 decibels.

4) Volume: The size of the oxygen concentrator is not very important. The manufacturer makes the machine very large. On the one hand, the components (compressor, molecular sieve) used may be better, so it is very large; on the other hand, the large volume is also conducive to heat dissipation and sound insulation.

5) Brand: Choose a manufacturer specializing in oxygen concentrators, the quality will be more guaranteed, After-sales service will also be better

6) Individual situation: For simple health care oxygen inhalation, the blood oxygen saturation is usually normal, and 1-liter and 2-liter machines can be considered; but if the blood oxygen saturation is usually lower than 94%, then at least a 3-liter oxygen concentrator should be used to start

7) Additional functions: real-time display of oxygen concentration (to understand the oxygen production situation), nebulization (occasionally do nebulization, backup function), voice (voice prompts will be helpful for people with poor eyesight), electronic flow meter (precise flow adjustment), remote control, timing

8) Combined use: When used with a ventilator, the oxygen concentrator should be at least 5 liters, and when used with a high-flow humidification therapy device, it is recommended to choose a 10-liter oxygen concentrator

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IV) Warm tips

It is recommended to see the machine in person before purchasing an oxygen concentrator, listen to the sound of the machine running, and look at the size and weight of the oxygen concentrator, and the workmanship quality, so that you can buy it with more confidence

Top oxygen concentrator supplier,reliable product and service

DEDAKJ oxygen concentrator manufacturer provides various models of 1-9L home oxygen concentrators, up to 20LPM medical oxygen concentrators as well as the 2 lbs lightweight portable oxygen concentrator for traveling.

This is top-rated DEDAKJ oxygen concentrator supplier, providing both DEDAKJ 10- 20 liter medical oxygen concentrators and 1-9 liters home oxygen breathing machines, and DEDAKJ oxygen accessories parts. 

For more information on oxygen concentrators, please feel free to consult us.
And you are we welcome to place the order in our official store directly.

We are operating the USA, Europe, Mexico and UK local warehouses. 
Usually you can receive the parcel within 3-6 days,very fast shipping time.
More important, as the honorable oxygen concentrator supplier, we can offer 1 year quality warranty to our customers!