Helping You Tap Into
the Right Kegerator!
the Right Kegerator!
If you own a kegerator, keeping your CO2 tank filled is just as important as having a fresh keg. Without it, your beer won't stay carbonated or pour properly. But if you're new to draft beer at home, you might be wondering: where do you actually refill a CO2 tank?
Good news: there are more options than you think.
Welding shops are one of the most reliable places to refill CO2 tanks. They usually handle various gas types and can fill different tank sizes. These stores tend to have competitive pricing and consistent availability.
Paintball stores often refill smaller CO2 tanks used for markers, and some will also fill 5 lb tanks commonly used with kegerators. Always call ahead to check compatibility.
If you’re near a homebrew store, this might be the easiest option. Many of them offer refills or exchanges specifically for draft beer systems.
Some chain stores (like Dick’s Sporting Goods) may refill paintball tanks or small CO2 cylinders. Again, best to call ahead.
CO2 is used in planted aquariums to support plant growth, so specialty aquarium stores may offer refills for small tanks.
Companies that service fire extinguishers often have the equipment to refill CO2 tanks. They're used to handling pressurized gas safely.
In some areas, commercial gas suppliers or beverage distributors offer CO2 fills for restaurants and bars. They may serve residential customers too.
While rare, a few breweries may offer CO2 refills or know exactly where to send you.
Wondering how long your keg will stay fresh? Learn how temperature, CO₂ pressure, and beer type affect shelf life — and how to keep your beer tasting great.
Prices vary by location, but here are some rough estimates:
Pros of refill:
Pros of exchange:
If your tank is out of certification (over 5 years old), some places will only do exchanges.
Not sure if your tank is running low? Here’s how to tell:
Most regulators have a gauge that shows tank pressure. If it drops below 500 PSI, your CO2 is almost gone.
One gauge shows pressure going to the keg; the other shows remaining tank pressure.
Foamy beer, slow flow, or inconsistent pours often mean the tank is low.
A full tank is cold at the bottom where liquid CO2 sits. If the whole tank feels warm, it may be nearly empty.
You can’t refill your own tank online, but you can order new Co2 tanks — most of which are shipped empty due to shipping regulations for compressed gas. Many home users choose to buy an extra empty tank online and get it filled locally.
Some specialty suppliers may offer exchange programs by mail, but these are less common and usually more expensive due to shipping costs and handling rules.
💡 Tip: Having a second tank on hand can save you from downtime while your main one is out for refill.
Not sure which CO2 tank to get? We break down all the common sizes, how long they last, and how to pick the best one for your kegerator setup.
Can I refill a paintball tank for use with my kegerator?
Not ideal. Paintball tanks usually aren’t compatible with beverage regulators.
How often will I need a refill?
A 5 lb tank will last for 5–8 full-size kegs, depending on your PSI and usage.
Can I fill my tank from another tank?
Technically yes, but it requires a transfer setup and isn’t recommended for beginners.
Once you know where to go, getting your CO2 tank filled becomes part of your routine.
Welding shops, homebrew stores, and fire equipment centers are your best bet — and usually pretty affordable. Just make sure your tank is up to date and has the right valve, and you’re good to go.
