Best CO2 Tanks for Homebrew Kegging (2026)
Updated How we research
A CO2 tank is the fuel supply behind every carbonated keg and every clean pour. Aluminum cylinders are lighter and resist corrosion, which makes them easy to haul to a refill shop, while steel tanks cost less up front and shrug off knocks. Size is the next call: a small cylinder tucks inside a kegerator but empties faster, and a larger one goes longer between fills at the cost of space. Check the valve type and that the tank carries a current hydro test date, since most fill stations will refuse a cylinder that is out of certification. Most single keg setups run comfortably on a mid size cylinder that balances runtime against the room inside your fridge or keezer. If you serve at parties or run several taps, a bigger tank saves you trips to the refill counter. Confirm your local shop does exchange or on site fills before you buy, because that decides how often you are without gas. A tank that fits your space and your refill routine is the one that keeps beer flowing without fuss.
The short version
We compared 8 picks. Our scores range from 6.3 to 8.6 out of 10.
- Best overall:VEVOR CO2 Tank, 5 lbs New Aluminum Alloy Cylinder, CGA320 Valve, DOT Approved. Highest overall score in this guide at 8.6/10.
- Also great value:TMCRAFT 5lb CO2 Tank, High Strength Aluminum Alloy Cylinder with CGA-320 Valve, DOT Approved. Value score of 8/10, overall 8.4/10.
- Solid build:TMCRAFT 2.5lb CO2 Tank, High Strength Aluminum Alloy Cylinder with CGA-320 Valve, DOT Approved. Build and materials score of 8/10, overall 8.0/10.
- Feature-rich:5 lb. Aluminum CO2 Cylinder with CGA 320 Valve. Features score of 7/10, overall 7.6/10.
Scores are our editorial assessment, not customer ratings. How we score
VEVOR CO2 Tank, 5 lbs New Aluminum Alloy Cylinder, CGA320 Valve, DOT Approved
VEVOR 5 lbs CO2 tank, a new aluminum alloy cylinder with CGA320 valve and DOT approval for kegerators.
Our score8.6/10Budget
TMCRAFT 5lb CO2 Tank, High Strength Aluminum Alloy Cylinder with CGA-320 Valve, DOT Approved
TMCRAFT 5lb CO2 tank, a high strength aluminum alloy cylinder with CGA-320 valve and DOT approval.
Our score8.4/10Budget
#1VEVOR 5 lbs CO2 tank, a new aluminum alloy cylinder with CGA320 valve and DOT approval for kegerators.
Fit for the job 9/10 · Features and specs 8/10 · Build and materials 8/10 · Value 9/10
- + 5 lbs size carbonates and serves many kegs per fill
- + Aluminum cylinder is lighter and resists rust
- + DOT approved tank is accepted at most refill and exchange shops
- - Tank ships empty and must be filled before use
- - Some exchange programs swap tanks, so you may not keep the new one
#2TMCRAFT 5lb CO2 tank, a high strength aluminum alloy cylinder with CGA-320 valve and DOT approval.
Fit for the job 9/10 · Features and specs 8/10 · Build and materials 8/10 · Value 8/10
- + 5lb capacity fits in most kegerators alongside kegs
- + High strength aluminum alloy keeps weight manageable
- + CGA-320 valve fits standard homebrew regulators
- - Delivered empty, so the first fill adds to the cost
- - Lesser-known brand compared with established cylinder makers
#3TMCRAFT 2.5lb CO2 tank, a compact aluminum alloy cylinder with CGA-320 valve and DOT approval.
Fit for the job 8/10 · Features and specs 8/10 · Build and materials 8/10 · Value 8/10
- + 2.5lb size fits tight kegerators and portable setups
- + DOT approved for refilling at gas suppliers
- + Lightweight enough to take to parties with a keg
- - Smaller tank needs refilling more often when serving several kegs
- - Refill cost per pound is higher than larger tanks
#4A 5 lb. aluminum CO2 cylinder with CGA 320 valve, a standard gas tank for homebrew kegerators.
Fit for the job 8/10 · Features and specs 7/10 · Build and materials 7/10 · Value 8/10
- + CGA 320 valve fits standard beer regulators
- + 5 lb. capacity lasts through several kegs
- + Aluminum resists rust in damp kegerators
- - Check for DOT certification before taking this tank to a refill shop
- - Arrives empty and needs filling at a gas supplier
#5A 5 lb aluminum CO2 tank with CGA320 valve and gray spray coating for draft beer and homebrew keg systems.
Fit for the job 8/10 · Features and specs 7/10 · Build and materials 7/10 · Value 8/10
- + Gray coating helps protect the aluminum from scuffs
- + CGA320 valve matches standard draft beer regulators
- + 5 lb size is a common choice for home kegerators
- - Check for DOT approval before taking this tank in for a refill
- - Coating can chip when banged against keg edges
#6A new 5lb CO2 tank, aluminum cylinder with CGA320 valve for homebrew and draft beer systems.
Fit for the job 8/10 · Features and specs 7/10 · Build and materials 7/10 · Value 8/10
- + New cylinder avoids inspection concerns of used tanks
- + Aluminum build is lighter than steel cylinders
- + CGA320 valve fits common homebrew regulators
- - Check for DOT marking before taking this tank in for a refill
- - Must be filled at a gas supplier before the first use
#7A 5lb aluminum CO2 tank cylinder for kegerators, regulator-compatible for homebrew draft systems.
Fit for the job 7/10 · Features and specs 6/10 · Build and materials 7/10 · Value 8/10
- + 5lb tank is a practical size for home kegerator use
- + Aluminum build is lightweight and corrosion resistant
- + Works with common kegerator regulators used by homebrewers
- - Check for DOT approval before taking this tank to a refill shop
- - Check the valve type before ordering to confirm it suits your regulator
#8A 5 Gallon stainless steel Ball Lock home brew keg listed as a product tank, a keg rather than a CO2 cylinder.
Fit for the job 5/10 · Features and specs 6/10 · Build and materials 8/10 · Value 7/10
- + New Ball Lock keg is ready for kegging a full batch
- + Stainless steel is durable and easy to sanitize
- + Can double as a secondary or pressurized fermentation vessel
- - This is a beer keg, not a CO2 tank, so it does not supply gas
- - Regulator, gas cylinder and lines are all sold separately
Before you buy: trade-offs we flagged
No pick is perfect. These are the main compromises we noted for the top products in this guide, so you can check they will not matter for you.
- Tank ships empty and must be filled before use (VEVOR CO2 Tank, 5 lbs New Aluminum Alloy...)
- Delivered empty, so the first fill adds to the cost (TMCRAFT 5lb CO2 Tank, High Strength Aluminum...)
- Smaller tank needs refilling more often when serving several kegs (TMCRAFT 2.5lb CO2 Tank, High Strength...)
- Check for DOT certification before taking this tank to a refill shop (5 lb. Aluminum CO2 Cylinder with CGA 320 Valve)
- Check for DOT approval before taking this tank in for a refill (5 lb Aluminum CO2 Tank, CGA320 Valve, Gray...)
- Check for DOT marking before taking this tank in for a refill (5lb CO2 Tank - New Aluminum Cylinder with...)
Frequently asked questions
›What is the best choice among co2 tanks for homebrew kegging (2026)?
VEVOR CO2 Tank, 5 lbs New Aluminum Alloy Cylinder, CGA320 Valve, DOT Approved is our top overall pick. VEVOR 5 lbs CO2 tank, a new aluminum alloy cylinder with CGA320 valve and DOT approval for kegerators. It earns our score of 8.6/10, based on fit for the job, features, build and value.
›What is a good budget option?
TMCRAFT 5lb CO2 Tank, High Strength Aluminum Alloy Cylinder with CGA-320 Valve, DOT Approved is the strongest low-cost pick in this guide. TMCRAFT 5lb CO2 tank, a high strength aluminum alloy cylinder with CGA-320 valve and DOT approval.
›How much should I expect to spend?
Picks in this guide span $ price bands (roughly: $ = under $30, $$ = $30 to $100, $$$ = over $100). We never display exact prices because they change constantly, so the buttons above always show Amazon's current price.
›How were these products chosen?
We shortlist products that fit the job this guide solves and compare their published specifications, such as size, capacity, materials and what is included. Each pick gets an editorial score out of 10 for fit, features, build and value, and we write the pros and cons from those details. Our score is not an Amazon customer rating. We earn a commission if you buy through our links, which never affects the ranking.
Home Brew Craft independently selects every product; we may earn a commission from links above.
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