Minnesota CO2 Suppliers (MN)

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

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Top cities

Duluth

2 listings
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Minneapolis

2 listings
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Rochester

2 listings
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St. Paul

2 listings
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Quick paths

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.

Browse guides Tools

For suppliers

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Find a supplier

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

Airgas - Minneapolis

Minneapolis, MN • gas supplier
Refill Exchange Welding Homebrew Soda

Major industrial gas supplier

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Airgas - St. Paul

St. Paul, MN • gas supplier
Refill Exchange Welding Homebrew Soda

Major industrial gas supplier

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Airgas - Rochester

Rochester, MN • gas supplier
Refill Exchange Welding Homebrew Soda

Major industrial gas supplier

Open in directory Website Call

Airgas - Duluth

Duluth, MN • gas supplier
Refill Exchange Welding Homebrew Soda

Major industrial gas supplier

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Minneapolis Welding Supply

Minneapolis, MN • welding supply
Refill Exchange Welding Accepts owned

Full-service welding supply

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St. Paul Welding Center

St. Paul, MN • welding supply
Refill Exchange Welding Accepts owned

Welding equipment supplier

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Rochester Welding Supply

Rochester, MN • welding supply
Refill Exchange Welding Accepts owned

Professional welding supplies

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Duluth Welding Center

Duluth, MN • welding supply
Refill Exchange Welding Accepts owned

Welding supplies and equipment

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FAQ: CO2 refills in Minnesota

Do suppliers in Minnesota 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?
If you own a listing, use Claim to request changes. Verified listings can be ranked higher and can include a custom image once you have one.

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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