Illinois CO2 Suppliers (IL)

Refill and exchange options across Illinois. Browse top cities or search listings. Call first, because policies change when the vibe changes.

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Use cases

These pages tell you what to ask for and who usually carries CO2 for each use-case.

Aquarium Welding Soda Paintball Lasers Troubleshooting

Guides

Tank sizes, adapters, refill vs exchange, and the stuff you learn after wasting a trip.

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Refill vs exchange: exchange is often faster when suppliers won’t fill customer-owned cylinders.

Airgas — Chicago

Chicago, IL • industrial gas

Refill Exchange Welding Homebrew Soda

Major industrial gas supplier in Chicago metro

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Airgas — Peoria

Peoria, IL • industrial gas

Refill Exchange Welding Homebrew Soda

Major industrial gas supplier in Central Illinois

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Airgas — Springfield

Springfield, IL • industrial gas

Refill Exchange Welding Homebrew Soda

Major industrial gas supplier in state capital

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Airgas — Rockford

Rockford, IL • industrial gas

Refill Exchange Welding Homebrew Soda

Major industrial gas supplier in Northern Illinois

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Chicago Welding Supply — Chicago

Chicago, IL • welding supply

Refill Exchange Welding Homebrew Accepts owned

Local welding supply in Chicago

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Peoria Welding Equipment — Peoria

Peoria, IL • welding supply

Refill Exchange Welding Homebrew Accepts owned

Local welding supply in Peoria

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Springfield Welding Supply — Springfield

Springfield, IL • welding supply

Refill Exchange Welding Homebrew Accepts owned

Local welding supply in Springfield

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Rockford Welding & Industrial — Rockford

Rockford, IL • welding supply

Refill Exchange Welding Homebrew Accepts owned

Local welding supply in Rockford

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FAQ: CO2 refills in Illinois

Do suppliers in Illinois refill customer-owned CO2 cylinders?

Some do, some don’t. Many prefer exchange programs because it’s faster and reduces liability. Always ask: “Do you refill customer-owned CO2 (CGA-320)?” before driving.

What’s the difference between refill and exchange?

Refill means they fill your exact cylinder. Exchange means you swap yours for a full one (often quicker). If you’re getting turned away, exchange is usually the easiest path.

What valve/connection do I need for standard CO2?

Most CO2 tanks use CGA-320. If your setup is for kegerators/aquariums/paintball, you may need an adapter or specific regulator. If you’re not sure, start with the Guides page.

What should I ask before I drive across town?

Ask: refill vs exchange, customer-owned policy, tank size limits, appointment rules, and whether they stock CO2 for your use-case. Policies can change, and “we used to” is not the same as “we do.”

How do I get a listing updated or verified?

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Before you drive across town

Ask these questions

Do you do refill, exchange, or both?
Do you fill customer-owned cylinders?
Do you support CGA-320 (standard CO2)?
Any tank size limits or appointment rules?

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