I am trying to understand why they have a shelf life... what expires in the filters over time?

The molecular sieve, a form of zeolite, allows oxygen molecules to pass but captures nitrogen and other gases. The captured gases are then released and disposed of by an electric reversal of the materials polarity, and a new cycle of oxygen flow initiated. Due to some chemical changes in the zeolite caused by the reversal of polarity, and contamination by trace elements, the efficiency of the whole process slowly degrades over time, until a sufficient concentration of oxygen can no longer be performed. The exchange of new zeolite (in a cartridge form) restores the process to its desired level of efficiency.

So my G5 unit was unused for over a year and now I’m getting column replacement notices. It’s because it’s been idle for over 6 months ?

Either sitting too long or the fact it is a year old. Both are indicators to definitely replace.

How do I know that the new columns are working? I could not get the message that the exchange was successful.

I wasn’t sure my new columns were working either. Called Inogen 800 number and they walked me thru the setup.

Does anyone have instructions for upgrading the ingen g5 so you can change air cleaners at home instead of sending the unit to the factory?

The inogen One G5 Colum Pair RP-502 I ordered came with directions and it was very simple for me to change. There is a video on U-tube also.

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Replacement Column Pair – Inogen Rove 6/Inogen One G5 - Oxygen Accessories - Two Removable Metal Columns - 1.19 lb., 2.90 in. W x 3.04 in. L x 6.55 in. H

Product ID: 160406963

📏Compact 2.90 x 3.04 x 6.55 in.

🔧Durable removable metal columns

⚖️Lightweight 1.19 lb.

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Description

⚡ Upgrade your oxygen game with sleek, durable power!

BUILT TO LAST - Robust removable metal columns engineered for long-term reliability and easy replacement.
TRUSTED BY THOUSANDS - Join 767+ satisfied users with a stellar 4.7-star rating—oxygen therapy made better.
EFFORTLESS PORTABILITY - Ultra-light 1.19 lb. design keeps your oxygen therapy hassle-free and on-the-go.
SEAMLESS COMPATIBILITY - Specifically crafted for Inogen One G5 and Rove 6 models—perfect fit, zero compromise.
SPACE SAVVY DIMENSIONS - Compact 2.90 x 3.04 x 6.55 inches fits seamlessly into your lifestyle and device.

This Replacement Column Pair is a lightweight, compact, and durable accessory designed exclusively for Inogen One G5 and Rove 6 oxygen concentrators. Engineered with removable metal columns, it ensures easy maintenance and long-lasting performance, backed by a strong customer satisfaction rating.

Specifications

ASIN	B07TH8PV1Y
Best Sellers Rank	#212,287 in Health & Household ( See Top 100 in Health & Household ) #88 in Oxygen Therapy Products
Customer Reviews	4.7 4.7 out of 5 stars (767)
Date First Available	August 4, 2019
Manufacturer	Inogen One
Package Dimensions	10.2 x 6.22 x 5.55 inches; 1.65 Pounds

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