Opens in a new tab

Bottle gas specialist for over 20 years

SodaStream-compatible CO2 refills & cylinder exchange

Order a food-grade CO2 refill for your empty 425g cylinder, or buy a new bottle supplied full for your sparkling water maker. Compare screw-in and pink quick-connect fittings for SodaStream machines, alongside Quooker-compatible and Grohe Blue options. For refills, choose DPD Drop-off & Return at checkout.

Choose your cylinderHow the exchange works
Food-grade CO2The same gas used in sparkling water & beer.
UK-filled & supportedFilled and backed by Adams Gas.
Simple cylinder exchangeDPD label emailed to you. Drop off, we refill and return.
Refills from £5.42 + VATCurrent shop prices. Delivery charged separately.
Refillable CO₂ cylinders for Quooker, SodaStream and Grohe Blue

Compatible with the systems you already ownQuooker · SodaStream · Grohe Blue & more
Screw-inCheck fitting and options →Quick ConnectCheck fitting and options →QuookerCheck fitting and options →Grohe BlueCheck fitting and options →

Compare CO2 cylinders for your SodaStream and sparkling taps

Check the valve and your machine’s compatibility before ordering. View the full product details or go straight to the shop to buy a new cylinder or refill.

Looking for a larger CO₂ cylinder?

Our larger dip/siphon-tube cylinders are a separate range for suitable filling equipment. They are not direct replacements for the 425g bottle in a household soda maker, and the small-cylinder postal refill service does not apply to them.

Compare small and larger dip/siphon CO2 cylinders → · Browse the full gas catalogue →

Local to Kent?

CO2 refill collection in Margate, Kent

If you are near Margate, contact our depot to check the cylinder fitting, stock and collection arrangements before travelling. You can bring suitable empty cylinders for a refill instead of arranging a postal exchange.

Get directions →Call us to check stock

Looking for a local supplier? Find an Adams Gas stockist and check whether they offer the small-cylinder service you need. Postal delivery options depend on your postcode.

Collection addressAdams Gas
Strasbourg Street, Westwood Industrial Estate, Margate, Kent CT9 4JJ

Which cylinder fits your sparkling water maker?

Check the valve and thread on your current cylinder and read your machine instructions. A screw-in system cylinder and a pink Quick Connect cylinder use different connections. Check the fitting before you insert the cylinder in your SodaStream sparkling water maker. The same gas capacity does not make them interchangeable.

Quooker-compatible (425g)Screw-in food-grade CO₂ for Quooker CUBE sparkling water taps.
SodaStream quick-connect (425g)Pink Quick Connect fitting for compatible machines including Terra, Duo and Art.
Grohe Blue compatible (425g)For Grohe Blue chilled & sparkling water taps.
SodaStream-style screw-in (425g)Classic screw-thread fitting. Check your model against the product details.

CO2 cylinder exchange: order, return, refill

Order your CO2 cylinder refill online

1. Order & pay online

Choose the refill that matches your cylinder, then order one refill for each empty bottle you will return. Select an available return and delivery option at checkout. Keep the order number with your parcel.

Empty CO2 cylinders wrapped in bubble wrap inside a cardboard box

2. Drop off your empties

Follow the DPD email and our packing guide. Wrap each empty cylinder and pack up to 6 per parcel, under 20 kg, with the longest side plus second-longest side within 120 cm. Use a participating DPD point and check whether it accepts the QR code or needs a printed label.

Customer dropping a parcel at a DPD point with a QR code on their phone

3. We refill & return

Once your empties reach us, we refill them with food-grade carbon dioxide and dispatch them back. Exchanges often take about two working days from drop-off, subject to transit and processing. The £15 + VAT return service covers both journeys; you pay for the refills separately.

Don’t forget your empties. We can’t complete your order or send your refilled cylinders until your empty cylinders arrive with us.

Download the step-by-step guide (PDF)

SodaStream CO2 refill or a new cylinder?

Choose a refill when you have a suitable empty cylinder. Buy a new filled bottle when you need another cylinder, including a spare to keep your machine in use while an empty is away. Adams Gas supplies an independent refill service and unbranded compatible cylinders; this is not a machine manufacturer’s subscription scheme.

What to include when comparing your order cost
Order option What you pay for
Refill only The gas for a suitable cylinder you return. Current refills start from £5.42 + VAT.
New cylinder supplied full A bottle and its first fill. No empty cylinder is needed for this option. Check the selected product for its current price.
DPD Drop-off & Return £15 + VAT per parcel of up to 6 cylinders where offered at checkout. Both journeys are included; the gas refills cost extra.
Complete order total The products, your selected delivery or return service, and VAT. Review the basket before paying.

If you keep spare cylinders, you can return several empties together within the parcel limit. Only order refills for the number of suitable empty cylinders you will send. Choose new bottles separately if you want to increase your supply.

A refillable CO₂ cylinder beside the stack of single-use plastic bottles it replaces

Refill once. Reuse again.One 425g cylinder can carbonate up to 60 litres.
Refill and reuse

Make up to 60 litres of sparkling water

60Lsparkling water

120500ml servings at 60L

Reuseexchange service

A 425g cylinder can carbonate up to 60 litres of water, depending on the machine and how much carbonation you use. That is the same volume as 120 servings of 500ml. Refilling lets you reuse the gas cylinder; making sparkling water at home can reduce the number of bottled drinks you buy.

Keep the cylinder in use with another food-grade CO2 refill.

SodaStream refill and CO2 exchange questions

How do I order a SodaStream CO2 refill from Adams Gas?

Identify the fitting on your empty cylinder, open the matching product and choose the refill option. Select an available delivery or return service at checkout. Send your empty CO2 cylinder using the order instructions; we refill and return it after it reaches us. If you have no empty cylinder, buy a new one supplied full instead.

Do I need an empty cylinder for every refill I order?

Yes. Return one suitable empty cylinder for each refill ordered. A refill-only purchase covers the gas, not an additional bottle. We cannot complete the refill order until your empties arrive. Contact Adams Gas before sending a damaged cylinder or one with an unfamiliar valve.

What does DPD Drop-off & Return include?

Where this option is available at checkout, £15 + VAT covers one parcel of up to six empty cylinders sent to Adams Gas and delivery of the refilled cylinders back to you. The gas refills cost extra. DPD emails the label and QR code separately; follow that email and the packing guide to choose a suitable drop-off point.

How much does a CO2 refill cost?

Current small-cylinder refills start from £5.42 + VAT. Each product card shows its refill price. A new filled cylinder costs more than a refill-only order. Add your chosen delivery or return service and VAT to compare the complete order total.

Which SodaStream cylinder should I choose?

Match the connection on your existing bottle: screw-in and pink Quick Connect are different systems. Check the product page against your sparkling water maker model before buying. Quooker CUBE and Grohe Blue taps have their own listed options; a shared 425g capacity does not make all fittings interchangeable.

When will my refilled cylinders come back?

The return journey starts after your empty cylinders reach Adams Gas. DPD exchanges often take about two working days from drop-off, depending on courier transit and processing. Treat this as an estimate, not a guaranteed delivery date, and allow for weekends and bank holidays.

Can I collect a CO2 refill near me?

You can contact our Margate depot in Kent to check the correct cylinder and collection availability before visiting. For another local supplier, use the Adams Gas stockist finder and ask that stockist whether they handle your particular small-cylinder refill. Services and availability vary between stockists.

How long does a 425g CO2 canister last?

A 425g cylinder can carbonate up to 60 litres of water. Your actual amount depends on the machine, drink size and how much fizz you prefer. Keeping a compatible spare bottle lets you continue making sparkling water while you return an empty one.

Can I use a large siphon bottle instead?

A larger dip/siphon cylinder supplies liquid CO2 for suitable equipment. It is not a direct-fit replacement for the small bottle in your machine and is outside this postal exchange service. Ask us about your equipment before ordering a larger cylinder.

Do I have to subscribe for refills?

No subscription is needed for the individual refill products shown here. Choose the quantity you need, match each refill to an empty cylinder and place an order when you need more gas.

Choosing between bottle sizes? Compare small CO2 cylinders and the larger dip/siphon range. For an uncertain fitting or return, ask Adams Gas before ordering.