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 One G5 Column Pair RP-502

Product ID: 652693399

⏳Durable design with replaceable parts to extend lifespan

💨High-efficiency sieve beds for oxygen concentration

⚙️Removable metal columns for easy servicing

AED 1142

Duties & taxes included

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Description

⚡️ Keep your oxygen flowing, your life glowing!

TRUSTED BY THOUSANDS - 4.7-star rating from over 700 users proves reliability and satisfaction.
COMPACT LIGHTWEIGHT - At just 748g, these columns maintain portability without compromise.
EFFORTLESS MAINTENANCE - Quick-swap metal columns mean no downtime or costly repairs.
EXTENDED DEVICE LONGEVITY - Replaceable components keep your Inogen One G5 running like new.
OPTIMIZED OXYGEN DELIVERY - Precision-engineered sieve beds boost oxygen concentration for peak performance.

The Inogen One G5 Column Pair RP-502 features removable metal columns housing sieve beds that efficiently convert ambient air into high-concentration oxygen. Designed for easy servicing without product returns, these replaceable parts extend the lifespan of your Inogen One G5 portable oxygen concentrator, ensuring consistent, reliable oxygen therapy with a lightweight, compact design favored by thousands.

Specifications

ASIN	B07TH8PV1Y
ASIN	B07TH8PV1Y
Best Sellers Rank	280,891 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 581 in Oxygen Therapy
Brand	Inogen
Customer Reviews	4.7 4.7 out of 5 stars (726)
Customer reviews	4.7 4.7 out of 5 stars (726)
Date First Available	25 Aug. 2024
Guaranteed software updates until	unknown
Manufacturer	Inogen One
Manufacturer reference	INORP502AREA
Package Dimensions	25.91 x 15.8 x 14.1 cm; 748 g
Units	1.00 count

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