Inogen One G3 Replacement Columns (Flow Setting 1-5)

by Inogen

Inogen One G3 Replacement Columns (Flow Setting 1-5)

When it comes to replacement column accessories, the Inogen One G3 Replacement Columns with flow settings 1-5 are the sieve beds compatible with the Inogen One G3 Oxygen Concentrator. More exactly, there are two types of replacement columns which are available for the G3. The older Inogen G3 devices (with 1-4 flow settings) use the Standard Column Pairs.

On the other hand, the newer Inogen G3 devices (with 1-5 flow settings) use "High Flow" Column Pairs. So, let’s see what characteristics make the High Flow Columns differentiate from the Standard ones.

Key Features:

  • Two metal column sieve beds
  • 2" Wide x 2" Long x 5" High
  • Each column weighs 10 ounces
  • Should be changed every 12-18 months
  • No tools are required for replacement
  • Only compatible with the newer Inogen One G3 devices (with Flow Setting 1-5)
  • FAA Approved

The main function of the sieve beds is to convert normal air into medical grade oxygen. More specifically, they are suitable for patients with COPD or other respiratory diseases.

Yet, there are certain rules and limitations which the user needs to consider. For instance, in order to maximize the life of the Inogen One G3 portable oxygen concentrator, he/she needs to change the columns every 12-18 months.


Considering the fact that there are 2 available types of replacement columns on the market, you should note that the Inogen One G3 Replacement Columns (Flow Setting 1-5) are ONLY compatible with the newer Inogen G3 devices with flow settings 1-5. These Column Pairs are also known as “High Flow” ones and can be found under the code Part RP-321.

There are several differences among the Part RP-320 (Standard Column Pair) and the Part RP-321 (High Flow Column Pairs). As a user, you can spot several characteristics.

Usually, the High Flow Columns include a blue sticker on the base of each column, the letters HF in the column serial number and orange dust covers. The Standard Columns do not include stickers and have a black-white dust cover.

Usage / Lifetime of the Columns

Usually, the Inogen One G3 Replacement Columns (Flow Setting 1-5) need to be changed every 12-18 months. However, as a user, you need the exact and not the estimated time. This comes as a consequence of the fact that the replacement columns should only be replaced when needed. Frequently changing them can harm the replacement columns and the whole device on a long term basis.

When a replacement for the Inogen G3 Columns is required, you will receive a low priority alert "O2 Service Soon". The meaning of this alert is that you have 30 days in order to replace the columns. In order to silence the message, you need to hold the light button 3 seconds. This will silence the notification for 72 hours.

The period of 30 days is enough for anyone who intends to change the columns. What’s more, the replacement process doesn’t require any special tools or a qualified person. The replacement process can be finished in a few minutes. In continuation, you can find a step-by-step procedure for changing the Inogen One G3 Replacement Columns (Flow Setting 1-5).

The Inogen One G3 Column Change Procedure

There are two metal sieve beds included in each order. Their replacement process is quite fast and easy.

First of all, you need to turn off the device by pressing the power button. Next, you need to remove the batteries. After you prepare the device, you need to turn it in an upside-down position where the bottom of the Inogen One G3 is facing up and the display panel is facing down.

As mentioned above, there are two replacement columns on the device. Each one is located on each side of the device. Each column can be removed by pressing the latch button with your thumb or finger.

To slide the column out, you need to simultaneously hold the button open and grip the exposed aluminum surface. Once you finish with one of the columns, you should repeat the process for the other one.

After finishing the removal process, you can continue by placing the new columns.

First of all, you need to remove the dust caps and clean the product so that no dust or debris is left on it. Make sure to insert the new columns as soon as you have removed the old ones. It is extremely important to never leave the columns exposed once you remove the dust caps.

The next step is to push the columns into the device. The sign that you have rightfully completed this step is that the latch button will return to the initial position – the closed position. Once you finish with the first column, repeat the steps for the other column.

Finally, you need to check what you have done. Connect the Inogen One G3 to the AC Power Supply and then to an electrical outlet. Yet, don’t power on the device. Press and hold the light button for around 10 seconds until the screen displays a "sieve reset" message. Then, release the button. Press the button once again and the screen will display a "sieve reset successful" message. Turn on the device and operate it normally.

When and why to replace the G3 Replacement Columns?

The optimal time for changing the Columns is every 12-18 months. However, there are a few exceptions from this number. For instance, if you are using the device in an environment with a lot of dust or smoke, you may need to replace the columns faster.

The Oxygen Concentrator sieve beds filter out the nitrogen from the air coming into the concentrator. After passing the second filter, the air gets concentrated into oxygen. So what will happen if the columns are malfunctioning?

If the sieve beds are malfunctioning, oxygen coming through the nasal cannula will be less pure. Consequently, the device will not be able to provide the required oxygen dosage needed to treat COPD or other diseases that affect the lungs.

If you are interested in purchasing the Inogen One G3 Replacement Columns (Flow Setting 1-5), feel free to contact us for additional information at any time as you please. You are free to do that by reaching out to us at or by simply giving us a call at 1-800-314-8225.