1
Pick your connector type
Choose Screw In, Quick Connect or Quooker depending on your machine.
CO₂ Refill Club
Never run out of bubbles again
Subscribe and save up to 50% with free delivery to your door and a simple empty returns procedure from your door.
How it works
Simple refills, no store trips
Pick it now
2
Choose subscription or one-off
Pick the refill option that suits you best. Subscriptions are the easiest way to save.
3
Get it delivered
Your order is sent directly to your door.
4
Return empties free
Return empty cylinders free of charge by scanning the QR code on the box label.
Pick your connector
Start with the right CO₂ cylinder
Why GAS4U
Trusted by households across Ireland
Everything you need to keep sparkling: compatible cylinders, reliable delivery, easy returns and friendly support.
Free shipping on subscriptions
Lower effort, lower cost and no store trips.
Works with popular machines
Compatible options for SodaStream, Philips and more.
Environmentally Friendly
Unlike CO2 sourced from underground deposits, our refill CO2 does not contribute to environmental emissions. This approach ensures higher quality standards, as our production process allows for constant purity control at the output.
Friendly Irish support
Quick help when you need to choose the right cylinder.
Still have questions?
Here are the most common questions before choosing a refill.
How do I know what gas I should use for my soda maker?
- Screw In: compatible with most classic non-Quick Connect machines.
- Quick Connect: works with newer SodaStream machines like Terra, E-Terra, Art and Duo.
If you are unsure, just use our compatibility tool! You can use it by clicking on any product.
How long will my gas last?
Each cylinder is designed to make up to 60 litres of sparkling water. This can vary depending on how much gas you add.
How much water should I put in the bottle before adding CO₂?
Only fill the bottle to the water mark shown on your bottle before carbonating.