Cheapest place to buy a SodaStream in the UK

You are buying a gas subscription with a machine attached.

Updated 27 September 2026 · 1 min read

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The gas cylinder is the real product

A starter machine comes with a cylinder, and once it runs out you exchange it. The exchange price, and how easily you can get to somewhere that does exchanges, is what the thing actually costs to own.

Buying a fresh cylinder outright rather than exchanging is considerably more expensive, so the exchange scheme is not optional in practice.

Cylinder and bottle compatibility differs across the range

Newer machines use a different cylinder connection from older ones, and bottles are not universally interchangeable either. If you are replacing an older machine, existing cylinders and bottles may not fit the new one — which changes the real cost of switching.

Bundles are usually about bottles and gas

Machine bundles typically add a spare cylinder or extra bottles. A spare cylinder is genuinely useful because it means you are never without gas while exchanging. Extra bottles are cheap and frequently padding.

Before you buy

  1. Find your nearest cylinder exchange point.
  2. Price a cylinder exchange and work out your cost per litre.
  3. Check cylinder and bottle compatibility if you already own a machine.
  4. Value a spare cylinder in a bundle highly; value extra bottles low.
  5. Compare machine prices last.

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Common questions

What does a SodaStream actually cost to run?

The gas. Work out the cylinder exchange price divided by how many litres it carbonates — that is the real cost, and it continues for the life of the machine.

Are SodaStream cylinders interchangeable between models?

Not always. Newer machines use a different cylinder connection from older ones and bottles are not universally interchangeable, so check before replacing an older machine.

Is buying a cylinder cheaper than exchanging?

No — buying a fresh cylinder outright costs considerably more than exchanging an empty one, so the exchange scheme is not really optional.

Check before you buy, not after

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