GCE Zen-O Column Pair

Genuine GCE Zen-O replacement column pair — the sieve beds that produce oxygen inside your concentrator.

Original price was: US$230.00.Current price is: US$190.00.

In stock

Call (786) 755-8063

Genuine GCE Zen-O column pair (sieve beds)
Restores oxygen purity and clears low-oxygen warnings from worn columns
For the full-size Zen-O — not the smaller Zen-O Lite (RS-00616)
The oxygen-producing core of your concentrator
Warranty by American Oxygen · Ships free

Genuine GCE Zen-O column pair (sieve beds)
Restores oxygen purity and clears low-oxygen warnings from worn columns
For the full-size Zen-O — not the smaller Zen-O Lite (RS-00616)
The oxygen-producing core of your concentrator
Warranty by American Oxygen · Ships free

Genuine OEM partFree shipping on orders $99+Ships from Miami, FLExpert help · (786) 755-8063

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Brand: GCE
SKU: RS-00513
Category: Column Pair

In short

The oxygen engine of your Zen-O

The RS-00513 is the genuine GCE Zen-O column pair — the molecular-sieve beds that produce oxygen inside the concentrator. Replace them when oxygen purity drops or the Zen-O signals low oxygen despite clean filters, typically after several years of use. This set fits the full-size Zen-O — not the smaller Zen-O Lite, which uses a different pair.

The sieve columns are where your concentrator actually produces oxygen. Over time the sieve material wears and purity drops — a fresh, genuine set restores oxygen output and clears low-oxygen warnings caused by tired columns.

✅ GCE Zen-O ❌ Not for the GCE Zen-O Lite (it uses a different pair, RS-00616)

Shop the compatible concentrator: GCE Zen-O

Restores oxygen purity

Fresh sieve beds bring output back to spec and clear the low-oxygen warnings caused by worn columns.

Genuine GCE part

Made to the exact GCE Zen-O spec, so the sieve material and fit perform as designed.

Warranty by American Oxygen

Backed by American Oxygen — up to a one-year warranty on sieve beds. Ask us for the current term.

Details

What's included

One genuine GCE Zen-O column pair (two matched sieve beds). Filters, batteries, and other parts are sold separately.

Why genuine matters

Genuine columns use the correct molecular-sieve material and seat precisely, so oxygen purity comes back to spec and airflow isn't restricted. Off-brand or poorly matched columns can under-perform, wear faster, or keep the low-oxygen alarm on. Every set is backed by a warranty by American Oxygen — ask us for the current term.

Frequently asked questions

What are sieve columns (sieve beds)?

They're the molecular-sieve cartridges inside your concentrator that strip nitrogen out of the air and deliver concentrated oxygen. They're the most important wear part — when the sieve material tires, oxygen purity drops.

Does this fit the Zen-O Lite?

No. The RS-00513 fits the full-size GCE Zen-O. The smaller Zen-O Lite uses a different sieve pair (RS-00616). If you're not sure which model you have, send us a photo and we'll confirm.

When should I replace them, and what are the warning signs?

There's no fixed schedule published by the manufacturer. Replace the columns when oxygen purity falls or the Zen-O shows a low-oxygen indicator that keeps returning after you've cleaned or replaced the filters — typically after several years of use, sooner with heavy daily use or dusty and pet environments.

Is this a DIY job or does it need a technician?

Replacing sieve columns is more involved than a filter change. Some owners replace the columns themselves; others prefer we handle it. If you're unsure, call us at (786) 755-8063 — we can walk you through it or service the unit for you.

Is it genuine, and what warranty comes with it?

Yes — it's a genuine GCE column set. It's backed by a warranty by American Oxygen (up to one year on sieve beds). Contact us for the current warranty term.