Soda Siphon vs SodaStream: Which Should You Buy? (October 2026)
Choose a soda siphon for compact manual fizz in small batches, or SodaStream Terra for regular countertop use with a reusable bottle and refillable cylinder. Your batch size, counter space and preferred way to restock CO2 make the choice.
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Choose SodaStream Terra for regular countertop fizz with a reusable bottle, or a soda siphon for compact manual pours. In the soda siphon vs SodaStream choice, batch size and CO2 restocking matter more than the basic job: both turn water into sparkling water, but they do it with different containers and refill routines.
The SodaStream Terra Starter Kit includes a 60L cylinder and reusable bottle. The iSi Classic Mesh Soda Siphon holds 1 quart and takes one separate charger per fill.
Soda siphon vs SodaStream: which fits your routine?
Terra suits regular countertop use, while the siphon suits small batches and a clear counter. Start with how much sparkling water you make at once, then consider whether you would rather manage a cylinder exchange or individual chargers.
Terra stays ready on the counter, with a bottle that snaps into place and a cylinder that clicks in. Its button lets you build fizz with presses, so you can adjust the strength for each batch.
The siphon uses a shorter manual sequence: fill it with cold water, screw in a compatible charger, shake and pour. It doesn't need electricity or a dedicated countertop machine.
For a broader look at styles and features, our guide to choosing a carbonated water maker explains what to compare before you buy.
Is a soda siphon easier to store than SodaStream?
The siphon is narrower and shorter than Terra, but Terra's slim shape can fit under many upper cabinets. Measure your intended storage spot, including height and the room needed to remove or attach parts.
The iSi Classic Mesh is 4 in wide and 12.6 in tall, with a 1 quart capacity. Stainless steel mesh covers its BPA-free bottle.
Terra measures 5 in wide, 7.9 in deep and 17 in tall. That gives it a countertop presence, though it is designed to tuck under most upper cabinets.
A siphon can go in a cupboard between uses and frees the counter from a machine. Terra makes more sense when you have a regular place for it and want the device ready to use.
What changes when you make more than one batch?
Terra's cylinder supports repeated batches before a refill, while the siphon uses a new charger for each fill. This is the clearest practical difference for households that drink sparkling water every day.
Terra's included cylinder is rated for up to 60 liters. The actual amount depends on the level of fizz you choose, because stronger carbonation uses more CO2.
Each siphon batch is 1 quart, and it needs its own charger. That can be convenient for a few servings, but frequent use means keeping enough compatible chargers on hand.
How do the SodaStream and siphon CO2 refills compare?
SodaStream Terra uses a reusable Quick Connect cylinder, and the iSi siphon uses one charger per fill. Consider where you can get refills and how you want to store them before choosing either system.
The iSi Classic Mesh uses iSi CO2 Soda Chargers sold separately. The 30-pack is designed for compatible iSi sparkling devices, including SodaMaker Classic and iSi Soda Siphons.
Terra's starter kit includes one Quick Connect cylinder. When it runs low, return and refill it through SodaStream exchanges at participating retailers.
The two formats are not interchangeable. Read our guide to SodaStream CO2 cylinders and Quick Connect options if you need help identifying the right refill for a SodaStream machine.
Which refill routine is easier to keep up with?
Choose chargers for measured, one-fill doses; choose Terra if you prefer a cylinder you return and reuse. Neither is automatically cheaper for every home, since local refill access and how much fizz you use affect ongoing cost.
A charger is ready for one batch, so you can keep a small supply for occasional drinks or guests. Store the chargers dry and away from direct sunlight, and use only compatible iSi devices.
Terra's cylinder reduces how often you arrange a refill compared with replacing a charger after every quart. Its rated yield is up to 60 liters, so the same cylinder may last longer when you prefer a lighter fizz.
There isn't one cost-per-liter answer without your refill options and carbonation habits. Our SodaStream cost-per-liter guide shows which costs to compare for a cylinder system.
Which option suits your drinking habits?
Choose Terra for a steady supply of sparkling water at home, or a siphon when a quart at a time is enough. The right size depends on how many people share it and whether you want a ready bottle or occasional pours.
A single 1 quart siphon fill works well for a few glasses, a meal or a small gathering. It gives you a compact format, but you repeat the charger step when you want another batch.
Terra's reusable bottle and cylinder are suited to a more regular routine. The bottle is dishwasher safe, so it can go through a familiar cleaning cycle between uses.
If you are still deciding whether a countertop machine fits your household, see our guide to soda machines for home use. It covers other machine options beyond this two-way comparison.
Who should buy the iSi Classic Mesh siphon?
Buy the siphon if you want a manual, no-electricity setup and usually make small batches. Its narrow body and 1 quart capacity suit someone who wants sparkling water without leaving a machine on the counter.
It also fits households that prefer a ready-to-use charger for each batch instead of arranging cylinder exchanges. Chill the water first because colder water holds more carbonation.
Skip it if you regularly serve several people or dislike stocking individual chargers. A fresh fill requires a fresh compatible charger, so the convenience depends on having them available.
Who should buy SodaStream Terra?
Buy Terra if sparkling water is part of your regular kitchen routine and you have room for a countertop machine. The kit includes its bottle and Quick Connect cylinder, so you can make a batch without first sourcing those two parts.
The fizz level is adjustable with the button: one slow press gives a light fizz, and additional presses build stronger bubbles. Its reusable BPA-free bottle is dishwasher safe.
Skip Terra if you lack counter or cabinet clearance, or if Quick Connect exchanges are inconvenient where you live. A siphon is a better match when storage space and small batches matter more.
How do you set up and care for each one?
Follow the device's fill and carbonation sequence, and use only the refill designed for it. A careful setup helps keep the process predictable and prevents a compatibility mistake.
For the iSi Classic Mesh, start with cold water, screw in one iSi CO2 Soda Charger, shake and pour. Keep chargers dry and out of direct sunlight, and use the siphon according to its instructions.
For Terra, fit its Quick Connect cylinder with the one-push connection and snap the bottle into place before carbonating. Carbonate fresh tap water, then add flavor after the fizzing step; clean the reusable bottle as directed, noting that the included bottle is dishwasher safe.
Don't force a charger into a cylinder machine or treat a cylinder as a siphon charger. The refill systems are different, and using the wrong format won't make the devices compatible.
For step-by-step help with SodaStream operation, see our first-timer's guide to using a SodaStream. It can help you understand the bottle and carbonation routine before you make your first batch.
What common buying mistakes should you avoid?
Check refill compatibility, storage space and batch size before you order. Those three checks prevent most mismatches between these two options.
One common mistake is buying a supply of iSi chargers while expecting them to fit Terra. Terra uses a Quick Connect cylinder, while each iSi charger is designed for compatible iSi sparkling devices.
Another is choosing the siphon for a household that needs several bottles at once. Its 1 quart capacity means more fill-and-charge cycles when you serve a group.
A final mismatch is overlooking the machine's height or the siphon's charger-per-fill routine. Measure your shelf or counter and estimate how often you will make a fresh batch.
If plain sparkling water is your main goal and you want to compare more machine formats, our best carbonated water makers guide covers additional choices.
Which should you buy: a soda siphon or SodaStream?
Pick SodaStream Terra if you want regular countertop use, a reusable bottle and a cylinder rated for up to 60 liters. Pick the iSi siphon if you want manual, compact fizz in 1 quart batches and are comfortable using a charger per fill.
Terra is the more natural fit for a daily routine or a household sharing sparkling water. The siphon suits occasional servings, limited counter space and people who prefer a simple manual pour.
For the soda siphon vs SodaStream decision, choose by the task you repeat most: Terra for ongoing household batches, the siphon for compact small-batch use. If you want to compare more countertop options first, start with our home soda machine guide.
Frequently asked questions
Is a soda siphon better than SodaStream?
A soda siphon suits you if you want a manual, compact setup and don't mind using a charger for each fill. SodaStream Terra suits regular countertop use with a reusable bottle and Quick Connect cylinder.
Choose by batch size and the refill routine you prefer.
Can I use iSi chargers in a SodaStream?
No. The iSi chargers are made for compatible iSi sparkling devices, while Terra uses a Quick Connect CO2 cylinder.
Use the refill type intended for your machine, and check its manual before replacing or installing any CO2 supply.
How much water can SodaStream Terra carbonate?
Its included Quick Connect cylinder is rated for up to 60 liters of sparkling water. Actual use depends on how much fizz you add, since each press changes the carbonation.
Return, refill and reuse the cylinder through SodaStream exchanges at participating retailers.
Does the iSi soda siphon need electricity?
No. The Classic Mesh siphon is manually operated: fill it with cold water, attach one iSi CO2 Soda Charger, shake and pour.
The charger is sold separately, so plan for a compatible refill each time you make another bottle.
Can I add flavor before carbonating?
Terra's instructions describe carbonating plain water first, then adding flavor drops, syrup or citrus. Follow the manual for either device and carbonate only liquids it permits.
For a drink idea, see our guide to Italian soda at home.
