Wisconsin CO2 Suppliers (WI)

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

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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 — Milwaukee

Milwaukee, WI • gas supplier

Refill Exchange Welding Homebrew Soda

Major industrial gas supplier

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Madison Homebrew Supply

Madison, WI • homebrew supply

Refill Homebrew Accepts owned

Homebrew supplies and CO2 refills

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Green Bay Welding & Gas

Green Bay, WI • welding supply

Refill Exchange Welding Accepts owned

Welding supply and CO2 exchange

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Appleton Gas & Welding

Appleton, WI • gas supplier

Refill Exchange Welding Soda

Industrial and beverage gas supplier

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Waukesha Homebrew Shop

Waukesha, WI • homebrew supply

Refill Homebrew Accepts owned

Homebrew supplies and CO2 refills

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Eau Claire Welding Supply

Eau Claire, WI • welding supply

Refill Exchange Welding Accepts owned

Welding supplies and CO2 exchange

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Oshkosh Homebrew Supply

Oshkosh, WI • homebrew supply

Refill Homebrew Accepts owned

Homebrew supplies and CO2 refills

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Janesville Welding Center

Janesville, WI • welding supply

Refill Exchange Welding Accepts owned

Welding supplies and CO2 exchange

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Fond du Lac Gas & Industrial

Fond du Lac, WI • gas supplier

Refill Exchange Welding Soda

Industrial and beverage gas supplier

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Brookfield Welding & Supply

Brookfield, WI • welding supply

Refill Exchange Welding Accepts owned

Welding supplies and CO2 exchange

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Superior Gas Co.

Superior, WI • gas supplier

Refill Exchange Welding Soda

Industrial and beverage gas supplier

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Stevens Point Homebrew Supply

Stevens Point, WI • homebrew supply

Refill Homebrew Accepts owned

Homebrew supplies and CO2 refills

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Manitowoc Welding & Gases

Manitowoc, WI • welding supply

Refill Exchange Welding Accepts owned

Welding supplies and CO2 exchange

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Wausau Gas & Beverage CO2

Wausau, WI • gas supplier

Refill Exchange Welding Soda

Beverage and industrial CO2 supplier

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FAQ: CO2 refills in Wisconsin

Do suppliers in Wisconsin 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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