Best Seltzer Chargers of 2025

“I've been using isi chargers for years, but I recently found these online. I took a chance on a 4 pack of 10 at the same price as isi and was pleasantly surprised. The taste is similar, with smaller bubbles and comparable longevity. I'm sold!”

“I purchased these cartridges for my beer growler. The original company charged 5x the price, but these work perfectly without any odd taste or smell. Great deal!”

“I switched to this syphon and the CO2 cartridges after struggling to find local exchanges. It costs me about $0.50 per quart of carbonated water, which is just as affordable as before. The seltzer tastes the same, and I love the convenience of ordering from Amazon.”

"Over the past 10 years, I've purchased at least 5,000 chargers. It's a wonderful and dependable product!"

"I prefer carbonated water and use about two or three of these CO2 cartridges weekly in my soda siphon. I've tried other brands, but I always come back to Mr. Fizz."

"Using my soda siphon makes me feel like a glamorous movie star from the 1940s. It's so elegant and old-fashioned! I keep it in the fridge for a nice cold glass of bubbly water."

"I've found these cartridges to be a cost-effective alternative to more expensive brands. They work well for my needs, even if I sometimes notice gas escaping."

"As a proud owner of a Growlerwerks uKeg, I can say these cartridges are reliable and last long, allowing me to easily carbonate my drinks without running out."

"I initially worried about the bluish color of the cartridges, but they fit perfectly and produce crisp soda water. Just remember to use cold water!"

"I enjoy making seltzer at home. My 11-year-old loves it too; the fizz is great and the taste is perfect!"

"These cartridges fit perfectly in my Soda Streaming bottle. I just wish I could get more than 1L per cartridge, but they work as intended!"

"I've been using this product for thirty years and it’s just as reliable as ever."

"I've ordered these several times for my .75L stainless steel iSi Soda Siphon without any issues. The shipping was prompt and the taste is great. They work just as well as the stock brand, and buying in bulk is a much better value for me."

"As a Hungarian, I love this high-quality product that works perfectly with my iSi Soda Siphon. If you enjoy wine, you should definitely try mixing it with soda water for a refreshing spritzer. It's delicious on hot days!"

"I use these chargers with my Mastrad Purefizz and they never disappoint! I go through 2 or 3 a day, and they keep me stocked with fizzy water, which is a healthier choice than soda. Plus, they work perfectly for making fizzy fruit drinks!"

"I bought these because my grandma had an old seltzer machine. I remember pretending to work in a bar and making drinks with it. Now, I use these cartridges for my home soda maker. Despite some flavors not being to my taste, they keep my mom happy. Plus, the empty cartridges entertain my cat, Tinker. I appreciate that they sell these in a 50-pack!"

"I needed chargers for a party and grabbed some generic ones from the liquor store. After struggling to charge my siphon, I checked their weights and found them lacking. Lesson learned! Now I keep stock of these high-quality Leland chargers."

"I ordered these as replacements for my Kleer plunger. They fit perfectly as the original ones did. A helpful tip: I used copy paper to create my own paper disks since I couldn’t find the OEM ones. This workaround made it easy to continue using my device!"

"I bought these for my wife's .50 caliber pepperball gun. They're very affordable compared to the cartridges from gun companies."

"With my seltzer maker, these cartridges work perfectly. I've had no issues."

"I've used these CO2 cartridges for years. They're reliable and never alter the taste of water."

"I can't beat this price. They work great on my Hamilton Beach Fizzini and cost less than half the price of brand name cartridges. I bought a case so I never run out!"

"I've been using this brand for years now. They provide great carbonation at the best price I've found. Always good quality!"

"I ordered these for my Mastrad Purefizz soda maker. They work as advertised and make a nice batch of soda water. I also appreciate that they are recyclable!"

"I find these cartridges work exceptionally well with my Kidde Soda King 100 Fountain Syphon. The soda tastes clean and refreshing, and I got the best bulk price available!"

"I decided to try these after seeing the great reviews, and I must say, they deliver consistent carbonation and a fantastic taste for my seltzer. I'm really excited about this purchase!"

"After switching from Leland, I can confidently say these cartridges perform much better. They carbonate effectively without that awful machine oil taste. I'm hopeful they maintain this quality!"

"I found this product works perfectly in my 1950's pellet handgun. I would definitely buy again if needed."

"I use this for my portable soda machine, and it works flawlessly. The price is fantastic!"

"This product provided just enough CO2 to power my growler and even had leftovers for rinsing. It's simply perfect!"