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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Inogen 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

⏳12-month optimal lifespan

🔔Smart replacement alerts

⚙️Tool-free swap in seconds

NZ$388

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Description

⚡ Keep your oxygen game strong—never miss a beat with smart, tool-free replacements!

LIGHTWEIGHT COMPACT DESIGN - At just 1.19 lbs and compact dimensions, these columns fit seamlessly into your routine.
STAY AHEAD WITH SMART ALERTS - Your Inogen device notifies you exactly when it’s time to swap, so you never miss peak performance.
EFFORTLESS AT HOME MAINTENANCE - Replace your columns without any tools—simple, fast, and hassle-free.
OPTIMIZE OXYGEN FLOW YEAR ROUND - Regular replacement ensures your concentrator delivers consistent, reliable oxygen therapy.
PRECISION ENGINEERED METAL COLUMNS - Durable, removable metal columns designed specifically for Inogen Rove 6 and One G5 models.

The Inogen Replacement Column Pair is a patient-replaceable accessory designed for the Inogen Rove 6 and One G5 oxygen concentrators. Featuring durable metal columns, it enables tool-free, at-home maintenance to sustain optimal oxygen delivery. With smart device alerts signaling replacement every 12 months, it ensures consistent performance and peace of mind for users.

Specifications

ASIN	B07TH8PV1Y
Best Sellers Rank	#90,764 in Health & Household ( See Top 100 in Health & Household ) #37 in Oxygen Therapy Products
Customer Reviews	4.7 4.7 out of 5 stars (774)
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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NZ$388

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In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to New Zealand.

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