# Best CO2 Tanks for Homebrew Kegging (2026) Source: https://homebrewcraft.com/best/co2-tanks Updated: 2026-09-14 Publisher: Home Brew Craft. Our score is an editorial rating out of 10 (fit 35%, features 25%, build 20%, value 20%), not a customer rating. Method: https://homebrewcraft.com/how-we-research#our-score 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. ## Picks ### 1. VEVOR CO2 Tank, 5 lbs New Aluminum Alloy Cylinder, CGA320 Valve, DOT Approved Our score: 8.6/10 (Fit for the job 9/10 · Features and specs 8/10 · Build and materials 8/10 · Value 9/10) VEVOR 5 lbs CO2 tank, a new aluminum alloy cylinder with CGA320 valve and DOT approval for kegerators. Pros: - 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 Cons: - Tank ships empty and must be filled before use - Some exchange programs swap tanks, so you may not keep the new one Details: https://homebrewcraft.com/product/B0C7H48Q14 ### 2. TMCRAFT 5lb CO2 Tank, High Strength Aluminum Alloy Cylinder with CGA-320 Valve, DOT Approved Our score: 8.4/10 (Fit for the job 9/10 · Features and specs 8/10 · Build and materials 8/10 · Value 8/10) TMCRAFT 5lb CO2 tank, a high strength aluminum alloy cylinder with CGA-320 valve and DOT approval. Pros: - 5lb capacity fits in most kegerators alongside kegs - High strength aluminum alloy keeps weight manageable - CGA-320 valve fits standard homebrew regulators Cons: - Delivered empty, so the first fill adds to the cost - Lesser-known brand compared with established cylinder makers Details: https://homebrewcraft.com/product/B0DCBRL9RC ### 3. TMCRAFT 2.5lb CO2 Tank, High Strength Aluminum Alloy Cylinder with CGA-320 Valve, DOT Approved Our score: 8.0/10 (Fit for the job 8/10 · Features and specs 8/10 · Build and materials 8/10 · Value 8/10) TMCRAFT 2.5lb CO2 tank, a compact aluminum alloy cylinder with CGA-320 valve and DOT approval. Pros: - 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 Cons: - Smaller tank needs refilling more often when serving several kegs - Refill cost per pound is higher than larger tanks Details: https://homebrewcraft.com/product/B0DCBH4KQ8 ### 4. 5 lb. Aluminum CO2 Cylinder with CGA 320 Valve Our score: 7.6/10 (Fit for the job 8/10 · Features and specs 7/10 · Build and materials 7/10 · Value 8/10) A 5 lb. aluminum CO2 cylinder with CGA 320 valve, a standard gas tank for homebrew kegerators. Pros: - CGA 320 valve fits standard beer regulators - 5 lb. capacity lasts through several kegs - Aluminum resists rust in damp kegerators Cons: - Check for DOT certification before taking this tank to a refill shop - Arrives empty and needs filling at a gas supplier Details: https://homebrewcraft.com/product/B00UXJ9SS8 ### 5. 5 lb Aluminum CO2 Tank, CGA320 Valve, Gray Spray Coating, for Draft Beer & Homebrew Keg Systems Our score: 7.6/10 (Fit for the job 8/10 · Features and specs 7/10 · Build and materials 7/10 · Value 8/10) A 5 lb aluminum CO2 tank with CGA320 valve and gray spray coating for draft beer and homebrew keg systems. Pros: - 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 Cons: - Check for DOT approval before taking this tank in for a refill - Coating can chip when banged against keg edges Details: https://homebrewcraft.com/product/B0FL21YMML ### 6. 5lb CO2 Tank - New Aluminum Cylinder with CGA320 Valve Our score: 7.6/10 (Fit for the job 8/10 · Features and specs 7/10 · Build and materials 7/10 · Value 8/10) A new 5lb CO2 tank, aluminum cylinder with CGA320 valve for homebrew and draft beer systems. Pros: - New cylinder avoids inspection concerns of used tanks - Aluminum build is lighter than steel cylinders - CGA320 valve fits common homebrew regulators Cons: - Check for DOT marking before taking this tank in for a refill - Must be filled at a gas supplier before the first use Details: https://homebrewcraft.com/product/B00HQQ3WWE ### 7. 5lb Aluminum CO2 Tank Cylinder Kegerator (regulator-compatible) Our score: 7.0/10 (Fit for the job 7/10 · Features and specs 6/10 · Build and materials 7/10 · Value 8/10) A 5lb aluminum CO2 tank cylinder for kegerators, regulator-compatible for homebrew draft systems. Pros: - 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 Cons: - Check for DOT approval before taking this tank to a refill shop - Check the valve type before ordering to confirm it suits your regulator Details: https://homebrewcraft.com/product/B0876FJC98 ### 8. 5 Gallon Home Brew Keg - New Ball Lock - Stainless Steel Product Tank Our score: 6.3/10 (Fit for the job 5/10 · Features and specs 6/10 · Build and materials 8/10 · Value 7/10) A 5 Gallon stainless steel Ball Lock home brew keg listed as a product tank, a keg rather than a CO2 cylinder. Pros: - 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 Cons: - This is a beer keg, not a CO2 tank, so it does not supply gas - Regulator, gas cylinder and lines are all sold separately Details: https://homebrewcraft.com/product/B01HKZUQIS As an Amazon Associate I earn from qualifying purchases.