Using CO2 Cylinders for Home Brewing FAQs

Fire Pros Inc.Fire SafetyUsing CO2 Cylinders for Home Brewing FAQs

Nothing beats the pride of being able to home brew your favorite beer. However, many first-time brewers have a lot of questions about how to properly use CO2 tanks. You can usually buy CO2 cylinders from an experienced fire protection contractor, local home brewing store, welding supply store, or any other place that sells compressed gas. Below, you find some of the most common questions we field from people just starting to home brew.

What are CO2 cylinders used for in home brewing?

CO2 cylinders are used with a coupler to push cold beer out of a kegerator (refrigerated keg) to a beer faucet. From there, the fresh home brew is poured into a glass. The pressure of your CO2 cylinder determines the beer carbonation.

Where can I get my used CO2 cylinder filled?

When your CO2 tank runs out, you can always go to a reputable fire protection company for refills. For CO2 cylinder recharge services, you can also try your local home brew shops or welding supply stores. Please keep in mind that depending on where you live, it may be difficult to find a reliable CO2 cylinder supplier near you. If this is the case, we recommend that you get in touch with other home brewers in your community to see where they get their CO2 tanks recharged.

When should I expect to refill my CO2 cylinder?

For a 5-pound CO2 cylinder, you can expect to dispense approximately two to four full-sized kegs before you need to recharge again. You’ll notice as you gain more experience with home brewing that the cooler the ambient temperature, the more likely you’ll be able to get four full-sized kegs out of one CO2 tank.

What happens during CO2 cylinder testing?

It’s usually a good idea to invest in home brewing CO2 cylinder maintenance. This will help ensure that your CO2 tank works properly. An experienced CO2 tank recharging contractor will make sure that testing adheres to regulation and code set by the Department of Transportation and hazmat. During testing, your CO2 tanks will be checked for leaks, pressure tightness, and structural integrity.

Making sure your CO2 tank is regularly inspected is important because it affects the quality of your home brewed beer. Make sure that every glass of foamy beer turns out just the way you like by investing in routine CO2 cylinder testing.

What pressure should I set for my CO2 cylinder?

Most beer brewers agree that you should aim for a CO2 tank PSI (pounds per square inch) between 12 and 14. Our best advice is to confirm the optimal CO2 pressure with the company who sold you your refrigerated keg. If you notice that your beer has been too foamy or flat, this may be a sign that your CO2 cylinder is not set to the right pressure. Properly regulating keg compression will help your beer turn out perfect every time.


If you are interested in buying CO2 cylinders for home brewing, please feel free to call one of our CO2 cylinder suppliers at 1-800-968-2871. Fire Pros, Inc. is dedicated to helping customers create the perfect home brew with quality CO2 cylinder products