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CO2 pressure table for carbonation and serving

When carbonating beer and/or serving beer from a keezer, setting the pressure according to the temperature is crucial to achieving the desired carbonation level and serving experience.

This guide only works if your system is balanced!

CO2 and Pressure Table for Beer

Select Temperature and Beer Type

Temperature (°C/°F) CO2 Volumes Pressure (bar) Pressure (psi)

Here’s a step-by-step guide

Understanding the Basics

Pressure & Temperature Relationship:

Carbon dioxide (CO₂) dissolves into beer better at cooler temperatures. The level of carbonation in beer depends on how much CO₂ can be dissolved in it, which is governed by both the temperature and the pressure of the gas.

Carbonation Volumes:

Different beer styles require varying levels of carbonation, measured in "volumes." For instance, British ales often require about 1.5-2.0 volumes, while Belgian ales may need around 2.5-3.0 volumes. Lambic and wheat beers often have about 3.2-3.5 volumes.

Steps for Setting Pressure

Identify the Carbonation Level:

Determine the appropriate carbonation volume for the specific beer style you are carbonating.

Set the Beer/Keezer Temperature:

Based on your desired carbonation level, adjust the keezer’s temperature. For most beers, temperatures between 40°F and 45°F (4.5°C and 7°C) are common.

If you're smart, you would cold crash at the same time! Set the beer temperature at 35°F (2°C) and set the pressure accordingly.

Find the Pressure Using a Carbonation Guide Above:

Use a carbonation guide to find the right CO₂ pressure based on the temperature of your beer. For instance, if you’re aiming for 2.5 volumes at 41°F (5°C), you’ll need to set the regulator to around 12 PSI or 0.85 bar.

Apply CO₂ Pressure:

Attach the CO₂ gas to the keg, then adjust the regulator to the desired pressure. Check for leaks and ensure all fittings are secure.

Carbonation Period:

The colder it is, the faster it will carbonate. Let the keg sit under pressure for at least 6-7days. CHeck out the video above for faster methods.

Check the Carbonation:

After the carbonation period, pour a test sample to verify the carbonation level. Adjust the pressure if needed.

Serving Beer

Maintain Serving Pressure:

Once the beer is carbonated, the serving pressure should generally be the same as the carbonation pressure if your system is in balance.

Monitor Temperature:

Keep the keezer temperature consistent to ensure the beer is served at the right temperature, which will also help maintain the correct carbonation.

By carefully setting the CO₂ pressure according to the temperature, you can ensure that your beer remains perfectly carbonated and is served with the ideal level of bubbles for an optimal drinking experience.