New Hampshire CO2 Suppliers (NH)
Refill and exchange options across New Hampshire. Browse top cities or search listings. Call first, because policies change when the vibe changes.
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Top cities
Quick paths
Use cases
These pages tell you what to ask for and who usually carries CO2 for each use-case.
Guides
Tank sizes, adapters, refill vs exchange, and the stuff you learn after wasting a trip.
For suppliers
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Find a supplier
Refill vs exchange: exchange is often faster when suppliers won’t fill customer-owned cylinders.
FAQ: CO2 refills in New Hampshire
Do suppliers in New Hampshire 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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