Soda machines have become a ubiquitous sight in restaurants, cafes, and homes. One of the most important aspects of a soda machine is carbonation. The right amount of carbonation is crucial to ensure that the soda tastes just right. Too little carbonation will make the soda taste flat, while too much carbonation will make it taste too fizzy. In this article, we’ll explore how to adjust carbonation on a soda machine, step-by-step.

Step-by-Step Guide on How to Adjust Carbonation on a Soda Machine

1. Turn off the CO2 tank and relieve the pressure from the soda machine

Before you begin adjusting the carbonation on your soda machine, it’s important to turn off the CO2 tank and relieve any pressure from the machine. This will ensure that you can safely adjust the carbonation without any risks.

soda machine blowing air

2. Locate the carbonation regulator

The carbonation regulator is typically located near the back of the soda machine. It’s a small, cylindrical device that controls the flow of CO2 into the soda water. Once you’ve located the regulator, you can begin adjusting the carbonation.

3. Adjust the carbonation regulator

To adjust the carbonation regulator, you’ll need to use a screwdriver. Turn the screwdriver to the right to increase carbonation, or to the left to decrease carbonation. Be sure to make small adjustments and test the soda after each adjustment.

4. Test the carbonation level

After making an adjustment to the carbonation regulator, it’s important to test the carbonation level. Pour a small amount of soda into a glass and taste it. If the soda is too flat, you’ll need to increase the carbonation. If the soda is too fizzy, you’ll need to decrease the carbonation.

soda machine not dispensing syrup

5. Repeat the process until you achieve the desired carbonation level

Adjusting carbonation is a trial-and-error process, so don’t be discouraged if it takes a few tries to get it just right. Continue making small adjustments to the carbonation regulator and testing the soda until you achieve the desired carbonation level.


Adjusting carbonation on a soda machine may seem like a daunting task, but it’s actually quite simple. By following the steps outlined in this article, you can adjust the carbonation on your soda machine to achieve the perfect taste. Remember to make small adjustments and test the soda after each adjustment to ensure that you achieve the desired carbonation level.


How do I know if I’ve adjusted the carbonation correctly?

You’ll know if you’ve adjusted the carbonation correctly by tasting the soda. If the soda tastes just right, then you’ve adjusted the carbonation correctly.

How often should I adjust the carbonation on my soda machine?

The frequency of adjusting carbonation depends on how often you use the soda machine. If you use the soda machine frequently, you may need to adjust the carbonation more often.