Helping You Tap Into
the Right Kegerator!
the Right Kegerator!
When you're setting up your home kegerator, there's one key question you’ll face early on: "What size CO2 tank should I get?" It might seem like a small detail, but the size of your tank can make a big difference in how often you need refills, how much space you need, and how smoothly your draft system operates.
This guide will walk you through the most common CO2 tank sizes, how long each one lasts, and how to choose the right one for your setup.
💡 Keep in mind: These numbers assume a standard single-tap setup with 10–12 PSI of pressure.
Good for occasional users or very small setups. Might get through 2–3 kegs before needing a refill.
The most popular option for home kegerators. Lasts through about 5–8 full-size kegs. Fits inside most standard kegerators.
Great for users with dual-tap systems or those who entertain frequently. Fewer refills needed.
A nice middle ground between 10 and 20 lb options. Good for heavy use while still being somewhat manageable in size.
Ideal for high-volume use or outdoor/garage setups where space isn't an issue. Refill less often, but the tank is large and heavy.
Several factors impact how quickly you go through your tank:
Here’s how to narrow it down:
⚠️ Pro tip: Make sure the tank you choose fits inside your kegerator or has a mounting option if stored externally.
Inside the kegerator: Most 5 lb tanks fit comfortably inside standard models. Just make sure there’s space left for your keg(s).
Outside the kegerator: Larger tanks (10+ lb) are often stored externally. Just run the gas line through the rear port if your unit has one.
Yes, if:
Having a backup tank ensures you always have pressure ready, especially if you run multiple kegs.
Looking for a CO₂ refill for your kegerator? Discover the best local options, what it costs, and whether buying a tank online is worth it.
Can I use a paintball CO2 tank?
Not ideal. The valves are different, and they're too small for practical draft use.
Does a larger tank affect beer pressure?
Nope. Pressure is set by your regulator, not tank size.
How do I know when it’s time to refill?
Use your regulator’s pressure gauge. Below 500 PSI? Time for a refill. Watch for foam or inconsistent pours.
Are all CO2 tanks compatible with kegerators?
Most use the standard CGA 320 valve, but always double-check before buying.
Choosing the right CO2 tank size depends on how much beer you serve, how often, and how much space you have.
For most home setups, a 5 lb tank strikes the right balance of convenience and capacity. Bigger setups? Step up to a 10, 15, or 20 lb.
Discover the best home kegerators with our beginner-friendly guide.
