By Caleb MorganUpdated November 2026
If you own a kegerator, sooner or later you will ask where to fill CO2 tanks for kegerator setups without paying for a swap every time the gauge drops. This list compares six products that help home bartenders and homebrewers handle CO2 refills, from a complete fill station to adaptors and replacement cylinders. Each pick was assessed on specifications, brand reputation and the patterns owners commonly report, with attention to thread compatibility, cylinder markings, and whether the item suits a home setup.
Our top picks at a glance
- 1
TOP CHOICEBest overallPaintball CO2 Fill Station Tank – Dual Valve with 50" Stainless SteelView on Amazon - 2
TOP CHOICEBest for small kitchensVEVOR CO2 Tank, 5 lbs New Aluminum Alloy CylinderView on Amazon - 3
TOP CHOICEBest budget pickNew Upgrades CO2 Tank Refill Adaptor Transfer HoseView on Amazon - 4
Best for frequent poursAluminum Alloy 6061-T6 20lb CO2 Tank, DOT CylinderView on Amazon - 5
Best for a spare cylinderFerroday 5LB CO2 Tank, Aluminum CO2 Tank with CGA-320 ValveView on Amazon - 6
Best for larger setupsVictory 10lb CO2 Tank Aluminum Cylinder with CGA320 ValveView on Amazon
Our Top Picks
Before choosing, it helps to understand the basic routes for refilling. Most home kegerator owners either exchange a tank at a beverage or welding supplier, refill a larger cylinder from a bulk source with a transfer setup, or keep a spare cylinder on hand so a brew day is never interrupted. The products below support one or more of these routes. For background on setup, see Co2 Bottle for Kegerator: A Step-by-Step Guide to Choosing and Connecting and Homebrew Kegging Basics: Kegs, CO2 and Care.
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| Paintball CO2 Fill Station Tank | Refilling from a bulk source | Dual valve with braided hose and digital scale |
| New Upgrades CO2 Tank Refill Adaptor Transfer Hose | Budget transfers between CGA320 cylinders | 60-inch transfer hose |
| VEVOR CO2 Tank, 5 lbs | Small kitchens and compact kegerators | Aluminum alloy cylinder with CGA320 valve |
| Aluminum Alloy 20lb CO2 Tank | Frequent pours | DOT markings and tare weight stamp |
| Ferroday 5LB CO2 Tank | A spare cylinder on hand | DOT-3AL markings with CGA-320 valve |
| Victory 10lb CO2 Tank | Larger home bars | 10 lb aluminum cylinder with CGA320 valve |
Paintball CO2 Fill Station Tank – Dual Valve with 50″ Stainless Steel Braided Hose + Digital Scale
Paintball CO2 Fill Station Tank – Dual Valve with 50" Stainless Steel Braided Hose + Digital Scale – Heavy Duty CO2 Refill Station for Paintball, Aquarium, and Kegerator Tanks
Best for: Refilling from a bulk source
This fill station suits owners who want to refill their own cylinders at home rather than exchanging them. It is aimed at people who already handle compressed gas for other hobbies and want a single kit for transfers.
Key specs
- Dual valve design
- 50-inch stainless steel braided hose
- Digital scale for weighing the cylinder during fill
Pros
- Digital scale helps you track how much gas is added
- Braided hose is generally more durable than plain rubber
- One kit covers several cylinder types
Cons
- Requires careful handling and understanding of pressure to use safely
- Larger footprint than a simple adaptor
Bottom line: A strong choice for owners who plan to refill regularly and want full control over the process.
New Upgrades CO2 Tank Refill Adaptor Transfer Hose
New Upgrades CO2 Tank Refill Adaptor Transfer Hose，for large CGA320 threaded CO2 tank is filled to the small CGA320 Thread co2 tank(60 inch), black
Best for: Budget transfers between CGA320 cylinders
This is a transfer hose for moving CO2 from a large CGA320 cylinder into a smaller one. It fits owners who already have a bulk cylinder and want a simple, inexpensive connection.
Key specs
- Designed for CGA320 threaded cylinders
- 60-inch hose length
- Black hose
Pros
- Simple connection without a full fill station
- Long hose gives flexibility in placement
- Low-commitment option for occasional refills
Cons
- Transfers still require a regulator or gauge to monitor pressure
- Owners often report that thread fit must be checked carefully before use
Bottom line: Best for owners on a tight budget who already own a large CGA320 source cylinder.
VEVOR CO2 Tank, 5 lbs New Aluminum Alloy Cylinder
VEVOR CO2 Tank, 5 lbs New Aluminum Alloy Cylinder, CO2 Air Tank with Light Gray Spray Coating, CGA320 Valve & Adjustable Pressure, DOT Approved Cylinder for Draft Beer Dispensing and Soda Maker
Best for: Small kitchens and compact kegerators
A 5-pound cylinder is a practical size for a compact kegerator or under-counter unit. It suits owners who want a spare tank that is easy to move and store.
Key specs
- 5 lb capacity
- Aluminum alloy cylinder
- CGA320 valve with adjustable pressure
Pros
- Lightweight and easy to handle
- Fits small spaces
- CGA320 valve matches common kegerator regulators
Cons
- Smaller capacity means more frequent refills
- Owners often note the spray coating can scuff with rough handling
Bottom line: Ideal for compact home bars where space and portability matter more than volume.
Aluminum Alloy 6061-T6 20lb CO2 Tank, DOT Cylinder
Aluminum Alloy 6061-T6, Safety Certified with DOT Markings & Tare Weight Stamps , Brushed Surface with Production Fresh Date 20lb CO2 Tank, Aluminum Alloy DOT Cylinder W/CGA-320 Valve(Empty)
Best for: Frequent pours
A 20-pound cylinder lasts much longer between refills, which suits busy home bars or owners who pour often at parties.
Key specs
- 20 lb capacity
- Aluminum alloy 6061-T6 construction
- DOT markings and tare weight stamp, CGA-320 valve
Pros
- Larger capacity reduces refill frequency
- Visible DOT and tare markings support compliance checks
- Aluminum construction keeps weight manageable
Cons
- Heavier and bulkier than 5 lb cylinders
- Requires a suitable place to store and secure it upright
Bottom line: A good fit for owners who pour regularly and have room for a larger cylinder.
Ferroday 5LB CO2 Tank, Aluminum CO2 Tank with CGA-320 Valve
Co2 Cylinder with DOT-3AL Markings, Fresh Production Date, Tare Weight Stamp, Co2 Tank for Kegerator, Draft Beer, Soda Maker Ferroday 5LB CO2 Tank, Aluminum CO2 Tank with CGA-320 Valve, Empty Cylinder
Best for: A spare cylinder on hand
This 5-pound cylinder works well as a backup, so a kegerator is never left without gas while you arrange a refill.
Key specs
- 5 lb capacity
- DOT-3AL markings
- CGA-320 valve
Pros
- Good backup for keeping service uninterrupted
- Compact and easy to store
- Standard CGA-320 fitting
Cons
- Limited capacity for heavy use
- Owners often recommend checking the hydrostatic test date on delivery
Bottom line: Worth keeping as a spare if you want a second cylinder ready to swap in.
Victory 10lb CO2 Tank Aluminum Cylinder with CGA320 Valve
Victory 10lb CO2 Tank Aluminum Cylinder with CGA320 Valve
Best for: Larger home bars
A 10-pound cylinder sits between the compact and heavy-duty options, giving a home bar with several taps enough gas for longer stretches.
Key specs
- 10 lb capacity
- Aluminum cylinder
- CGA320 valve
Pros
- Balanced size for most home kegerators
- Standard CGA320 connection
- Good middle ground in capacity
Cons
- Still needs regular refills under heavy use
- Not as portable as the 5 lb options
Bottom line: A sensible everyday choice for a home bar with moderate use.
Buying Guide
Thread and valve compatibility
Most kegerator regulators use a CGA320 connection, so confirm the cylinder valve matches before you buy. Mismatched threads are a common reason a refill plan fails.
Good picks for this: VEVOR CO2 Tank, 5 lbs and Victory 10lb CO2 Tank
Cylinder size and capacity
Estimate how many pours you make in a typical week. Smaller cylinders are easier to move but need refilling sooner, while 20 lb cylinders suit frequent use.
Good picks for this: Aluminum Alloy 6061-T6 20lb CO2 Tank and Ferroday 5LB CO2 Tank
Required markings and inspection dates
Look for DOT markings and a tare weight stamp on the cylinder shoulder. Check the hydrostatic test date, since cylinders must be retested on a set schedule. Refill stations and suppliers may decline cylinders that are out of date.
Good picks for this: Aluminum Alloy 6061-T6 20lb CO2 Tank and Ferroday 5LB CO2 Tank
Refill method: exchange or fill
Decide whether you will exchange full cylinders or refill your own. Exchange is simpler but depends on local suppliers. Filling at home requires a transfer setup and careful pressure handling.
Good picks for this: Paintball CO2 Fill Station Tank and New Upgrades CO2 Tank Refill Adaptor Transfer Hose
Durability of hoses and fittings
Braided stainless hoses generally hold up better to repeated connections than plain rubber. Inspect fittings for wear before each use and replace any damaged parts.
Good picks for this: Paintball CO2 Fill Station Tank and New Upgrades CO2 Tank Refill Adaptor Transfer Hose
Storage and portability
Store cylinders upright, secured, and away from heat sources. Lighter cylinders are easier to carry to a supplier and back, which matters if you do not have a vehicle that suits large tanks.
Good picks for this: VEVOR CO2 Tank, 5 lbs and Ferroday 5LB CO2 Tank
Safety and care
Never heat a CO2 cylinder or leave it in a hot car. Keep valves capped when not in use. Gas handling carries real risk, so if you are unsure about transfers, consult a qualified gas supplier or professional.
Good picks for this: Paintball CO2 Fill Station Tank and Victory 10lb CO2 Tank
FAQ
Where can I fill a CO2 tank for my kegerator?
Many welding and beverage gas suppliers exchange or refill CO2 cylinders. Some homebrew shops also offer refill services. Call ahead to confirm they handle CGA320 cylinders for beverage use.
Can I refill my own CO2 tank at home?
It is possible with a transfer setup, but it requires careful handling of pressure and proper equipment. If you are not experienced with compressed gas, use a professional refill service instead.
How do I know when my CO2 tank is empty?
Watch the regulator gauge. When the tank pressure drops well below the set pressure and pours become flat or foamy, it is time to refill. Weighing the cylinder can also confirm how much gas remains.
What does CGA320 mean?
CGA320 is the standard valve connection used for many beverage CO2 cylinders in the United States. Your regulator and cylinder valve should both use this fitting.
How often do CO2 cylinders need hydrostatic testing?
In the United States, CO2 cylinders are typically retested on a fixed schedule set by the Department of Transportation. Check the inspection stamp on the cylinder and confirm with your supplier before refilling.
Is a 5 lb or 20 lb tank better for a kegerator?
A 5 lb tank suits light use and compact spaces. A 20 lb tank suits frequent pours. Choose based on how often you serve beer and how much room you have.
Conclusion
For most home bars, the best answer to where to fill CO2 tanks for kegerator setups is a combination of a local refill or exchange service and one spare cylinder. The Paintball CO2 Fill Station Tank suits owners who want to refill at home, while the New Upgrades transfer hose is a budget route for occasional transfers. Compact owners will find the VEVOR 5 lb cylinder handy, frequent pourers may prefer the 20 lb aluminum cylinder, and the Ferroday 5 lb and Victory 10 lb cylinders cover spare and mid-size needs. For more on regulators and setup, see 7 Best CO2 Regulators for Kegerator Picks Compared (2026) and Foaming Beer from Kegerator? 6 Best Fixes and Parts to Stop It (2026).
Sources
- General guidance on handling compressed gases and safe storage practices (energy.gov)
- Consumer safety information on compressed gas cylinders and product recalls (cpsc.gov)
- Federal rules for cylinder marking, testing and transport (dot.gov)
Related reading
- 6 Best Nitrogen Tanks for Kegerator Options Compared (2026)
- Wine Fridge Kegerator Combo: How to Build One for Your Home Bar (2026)
About Caleb Morgan
Caleb Morgan is part of our editorial team and reviews and edits our home brewing guides, checking product details against manufacturer specifications and owner feedback.
