Does Walmart Fill CO2 Tanks?

Unfortunately, Walmart does not refill or exchange CO2 tanks. They do, however, exchange small CO2 cylinders, like the type used for SodaStreams.

Walmart does not cite a specific reason for why they do not fill CO2 tanks.

Walmart Fill CO2 Tanks 1

Can You Buy CO2 Refill Stations At Walmart?

Even though you cannot refill or exchange CO2 tanks at Walmart, you can purchase all of the supplies you need to do it yourself at home on

The prices for CO2 refill supplies vary from $45 to about $80. 

Where Can You Fill Your CO2 Tanks Instead?

Places that offer CO2 tank refilling services include:

  • Dick’s Sporting Goods
  • Ace Hardware
  • Praxair
  • Airgas
  • Welding supply stores

Refilling a 5-lb CO2 tank can range in price from as low as $7 to as much as $30 depending on where you go and how large your tank is. 


Is it safe to refill CO2 tanks by yourself?

Yes. However, you should be comfortable using varying sizes of CO2 tanks and an air compressor. CO2 tanks are highly pressurized and should not be filled or tampered with by anyone who is not comfortable and familiar with the task.

How do you know how much is left in your CO2 tank?

Some CO2 tanks are equipped with a gauge that should be able to approximate the level of your CO2. However, not all tanks have gauges, and not all gauges are completely accurate. You can sometimes approximate the level of your tank by lifting and/or weighing it and comparing that weight to the tare weight (which should be printed somewhere on the tank). For a full look at how to determine the fullness level of your tank, check out this YouTube Tutorial.

Can you refill a CO2 tank with an air compressor?

Yes. An air compressor is necessary for refilling a CO2 tank. However, you will also need a tank of CO2 gas from which to refill your tank. A CO2 tank cannot and should not be refilled with oxygen.

Can you refill a paintball CO2 tank?

Yes. Paintball CO2 tanks can be refilled using the types of refilling stations sold at Walmart.

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