{"title":"Screw-In CO₂ Cylinders","description":"\u003cp data-lfile-container=\"7337495a-8237-45ac-a163-aa7fbfc4c8a9\" data-pm-slice=\"1 1 []\"\u003eShop screw-in CO₂ cylinders for sparkling water makers and sparkling water taps with a standard screw-in connection, delivered anywhere in Ireland. Screw-in cylinders use the most common CO₂ thread, so they fit a wide range of popular machines and under-sink tap systems without adapters.\u003c\/p\u003e\n\u003cp\u003ePick the classic blue \u003ca rel=\"noopener noreferrer nofollow\" href=\"https:\/\/gas4u.ie\/products\/screw-in-co2-gas-cylinder-refill-425g-makes-up-to-60l-sparkling-water\" target=\"_blank\"\u003eSodaStream Screw-In cylinder\u003c\/a\u003e, or save with our own \u003ca rel=\"noopener noreferrer nofollow\" href=\"https:\/\/gas4u.ie\/products\/screw-in-gas4u-co2-gas-cylinder-refill-425g-makes-up-to-60l-sparkling-water\" target=\"_blank\"\u003eGas4U Screw-In cylinder\u003c\/a\u003e. Both hold 425g of food-grade CO₂ and make up to 60 litres of sparkling water, replacing over 120 single-use plastic bottles. Add a splash of flavour with our \u003ca rel=\"noopener noreferrer nofollow\" href=\"https:\/\/gas4u.ie\/collections\/flavours\" target=\"_blank\"\u003eSodaStream syrups\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMachines and taps that use screw-in cylinders\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur 425g screw-in cylinders fit the standard screw-in (TR21x4) connection used by many popular brands, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSodaStream:\u003c\/strong\u003e Crystal 2.0, Easy and other classic screw-in models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAarke:\u003c\/strong\u003e Carbonator models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrita:\u003c\/strong\u003e sodaOne, sodaTrio, Yource\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhilips:\u003c\/strong\u003e GoZero sparkling water makers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMySoda:\u003c\/strong\u003e Woody, Ruby\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMitte:\u003c\/strong\u003e Home\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSparkling water taps:\u003c\/strong\u003e GROHE Blue Home and other under-sink systems that take a standard 425g screw-in cylinder\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlease note: the Quooker CUBE uses its own cylinder valve and is not compatible with standard screw-in cylinders. Always check your machine or tap manual before ordering.\u003c\/p\u003e\n\u003cp\u003eBuy once and return your empties for credit, or join the Gas4U Refill Club to save up to 50% with free shipping and empties collected at every renewal.\u003c\/p\u003e\n\u003cp\u003eHave a click-in machine such as the SodaStream TERRA, ART or DUO? Shop our \u003ca rel=\"noopener noreferrer nofollow\" href=\"https:\/\/gas4u.ie\/collections\/quick-connect-co2-cylinders\" target=\"_blank\"\u003eQuick Connect CO₂ Cylinders\u003c\/a\u003e instead.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 id=\"faqs-1\"\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich machines use screw-in CO₂ cylinders?\u003c\/strong\u003e Screw-in cylinders fit machines with a standard screw-in connection, including the SodaStream Crystal 2.0 and Easy, Aarke Carbonator, Brita sodaOne and sodaTrio, Philips GoZero, MySoda Woody and Ruby, and Mitte Home. They don't fit Quick Connect machines such as the SodaStream TERRA, ART or DUO.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo screw-in cylinders fit sparkling water taps?\u003c\/strong\u003e Yes, if your tap system takes a standard 425g screw-in cylinder, such as GROHE Blue Home. The Quooker CUBE uses a different valve, so standard screw-in cylinders won't fit it. Check your tap's manual if you're unsure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I fit a screw-in cylinder?\u003c\/strong\u003e Remove the cap, insert the cylinder and screw it in clockwise until hand-tight. Don't use tools or overtighten.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's the difference between the Gas4U and SodaStream screw-in cylinders?\u003c\/strong\u003e Both hold 425g of food-grade CO₂ and make up to 60 litres. The Gas4U cylinder is our own brand and costs less.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does a screw-in cylinder last?\u003c\/strong\u003e At about one litre of sparkling water a day, one cylinder typically lasts six to eight weeks, depending on how fizzy you like it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat do I do with my empty screw-in cylinders?\u003c\/strong\u003e One-time buyers can return all their empties with a single free return label and receive credit towards their next order. Refill Club members have empties collected after each renewal.\u003c\/p\u003e","products":[{"product_id":"sodastream-screw-in-co2-gas-cylinder-refill-425g","title":"SodaStream CO₂ Cylinder 425g (Screw-In)","description":"\u003cp data-lfile-container=\"d4367431-ba30-48e4-a1df-5cfb5a7b7309\" data-pm-slice=\"1 1 []\"\u003eThe genuine SodaStream 425g Screw-In CO₂ Cylinder is the classic blue cylinder that fits most screw-in sparkling water makers. Simply twist it into place and you're ready to make up to 60 litres of sparkling water, saving over 120 single-use plastic bottles along the way.\u003c\/p\u003e\n\u003cp\u003eGas4U delivers SodaStream cylinders to homes across Ireland, with a straightforward process for returning your empties.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 id=\"why-choose-the-sodastream-screw-in-425g-co₂-cylinder\"\u003eWhy Choose the SodaStream Screw-In 425g CO₂ Cylinder?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTrusted SodaStream Quality\u003c\/strong\u003e This is an official SodaStream cylinder, filled with food-grade CO₂ for consistent, reliable carbonation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits Most Screw-In Machines\u003c\/strong\u003e The blue screw-in cylinder suits a wide range of sparkling water makers that use the traditional screw-in connection. No adapters needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUp to 60 Litres of Sparkling Water\u003c\/strong\u003e Each cylinder carbonates up to 60 litres, which is about:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e60 x 1-litre bottles\u003c\/li\u003e\n\u003cli\u003e120 x 500ml bottles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYour fizz level makes the difference. Lightly sparkling water gets more from each cylinder, while extra fizzy drinks use more.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGreat Value Over Bottled Water\u003c\/strong\u003e A spare cylinder saves you money on bottled fizzy water and spares you from carrying heavy cases home. Make plain sparkling water or your own soft drinks whenever you like.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHealthy Hydration\u003c\/strong\u003e Sparkling water made at home has zero calories, no artificial sweeteners and no preservatives.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDelivery and Returns Made Easy\u003c\/strong\u003e We deliver nationwide. One-time customers return empties with a single free return label and earn credit for each cylinder. Subscribers save up to 50%, enjoy free shipping and have empties collected at renewal.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 id=\"faqs-2\"\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich machines does this cylinder fit?\u003c\/strong\u003e It fits sparkling water makers with a traditional screw-in CO₂ connection. It does not fit Quick Connect machines such as the SodaStream TERRA, ART or DUO.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I fit a screw-in cylinder?\u003c\/strong\u003e Remove the cap, insert the cylinder into the machine and screw it in clockwise until it's hand-tight. Don't use tools or overtighten.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much sparkling water does it make?\u003c\/strong\u003e Up to 60 litres, depending on your preferred level of carbonation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the CO₂ food grade?\u003c\/strong\u003e Yes. The cylinder contains food-grade carbon dioxide, suitable for drinking water and homemade sparkling drinks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs there a lower-cost alternative?\u003c\/strong\u003e Yes. The Gas4U Screw-In 425g cylinder offers the same capacity and food-grade CO₂ for less.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often will I need a new cylinder?\u003c\/strong\u003e Drinking around one litre of sparkling water a day, one cylinder typically lasts six to eight weeks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens to my empty cylinder?\u003c\/strong\u003e Send it back through the Gas4U returns process. One-time buyers get credit towards their next order; subscribers arrange a free collection after each renewal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I keep a spare cylinder at home?\u003c\/strong\u003e Absolutely. Having a second cylinder means you can swap immediately and never run out.\u003c\/p\u003e","brand":"GAS4U","offers":[{"title":"SodaStream \/ 1","offer_id":54916185358601,"sku":"1-PACK-SS-Screw","price":27.99,"currency_code":"EUR","in_stock":true},{"title":"SodaStream \/ 2","offer_id":54916185850121,"sku":"2-PACK-SS-Screw","price":57.99,"currency_code":"EUR","in_stock":true},{"title":"SodaStream \/ 4","offer_id":54916185882889,"sku":"4-PACK-SS-Screw","price":115.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/5739\/3161\/files\/2x_1032121441.png?v=1756986749"},{"product_id":"gas4u-screw-in-gas4u-co2-gas-cylinder-refill-425g","title":"GAS4U CO₂ Cylinder Refill 425g (Screw-In)","description":"\u003cp data-lfile-container=\"d4367431-ba30-48e4-a1df-5cfb5a7b7309\" data-pm-slice=\"1 1 []\"\u003eEnjoy fresh sparkling water whenever you want with the Gas4U 425g Screw-In CO₂ Cylinder. It twists straight into most screw-in sparkling water makers and makes up to 60 litres of sparkling water, replacing over 120 single-use plastic bottles.\u003c\/p\u003e\n\u003cp\u003eAs our own Gas4U cylinder, it gives you the same food-grade CO₂ as branded refills for less. Add fast delivery across Ireland and easy empty returns, and you'll never be caught without fizz.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 id=\"why-choose-the-gas4u-screw-in-425g-co₂-cylinder\"\u003eWhy Choose the Gas4U Screw-In 425g CO₂ Cylinder?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eFits Most Screw-In Machines\u003c\/strong\u003e The Gas4U Screw-In cylinder suits a wide range of sparkling water makers that use the traditional screw-in connection. It fits straight in, with no adapters needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMakes Up to 60 Litres of Sparkling Water\u003c\/strong\u003e Each 425g cylinder carbonates up to 60 litres of water, roughly:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e60 x 1-litre bottles\u003c\/li\u003e\n\u003cli\u003e120 x 500ml bottles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHow far it goes depends on your fizz level. Lightly sparkling water stretches a cylinder further; extra fizz uses more CO₂.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBetter Value Than Branded Refills\u003c\/strong\u003e You get the same 425g of food-grade CO₂ at a lower price than branded cylinders. Subscribe and save up to 50%, with free shipping included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA Healthy Way to Stay Hydrated\u003c\/strong\u003e Plain sparkling water has zero calories, no artificial sweeteners and no preservatives. Enjoy it straight or add your favourite flavour.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLess Plastic, Fewer Shopping Trips\u003c\/strong\u003e Every cylinder replaces over 120 single-use plastic bottles. No more hauling heavy multipacks home from the supermarket.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDelivered to Your Door Anywhere in Ireland\u003c\/strong\u003e We deliver fresh cylinders nationwide, so your machine is always ready to go.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEasy Cylinder Returns\u003c\/strong\u003e One-time customers can return all their empties in one go with a free return label and get credit towards their next order. Subscribers get a reminder before each renewal and we collect the empties for you.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 id=\"faqs-3\"\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich machines does this cylinder fit?\u003c\/strong\u003e It fits sparkling water makers with a traditional screw-in CO₂ connection. It does not fit Quick Connect machines such as the SodaStream TERRA, ART or DUO. If you're unsure, use the Gas4U Compatibility Checker before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I fit a screw-in cylinder?\u003c\/strong\u003e Remove the cap, insert the cylinder into your machine and screw it in clockwise until hand-tight. Don't use tools or overtighten.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much sparkling water does one cylinder make?\u003c\/strong\u003e Up to 60 litres, depending on how fizzy you like your water.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the CO₂ food grade?\u003c\/strong\u003e Yes. Every Gas4U cylinder is filled with food-grade carbon dioxide, suitable for drinking water and homemade sparkling drinks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is this different from a SodaStream Screw-In cylinder?\u003c\/strong\u003e Both hold 425g of food-grade CO₂ and make up to 60 litres. The Gas4U cylinder is our own brand and costs less.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long will one cylinder last?\u003c\/strong\u003e If you drink about one litre of sparkling water a day, expect six to eight weeks, depending on your fizz level.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat do I do with my empty cylinder?\u003c\/strong\u003e Return it through the Gas4U returns process. One-time buyers receive credit towards their next order. Subscribers schedule a collection within 15 days of renewal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I keep a spare?\u003c\/strong\u003e Yes. Many customers keep a second cylinder so they can swap straight away when one runs out.\u003c\/p\u003e","brand":"GAS4U","offers":[{"title":"GAS4U \/ 4","offer_id":56254127210761,"sku":"4-PACK-G4U-SCREW","price":111.99,"currency_code":"EUR","in_stock":true},{"title":"GAS4U \/ 2","offer_id":56254127243529,"sku":"2-PACK-G4U-SCREW","price":55.99,"currency_code":"EUR","in_stock":true},{"title":"GAS4U \/ 1","offer_id":56254127276297,"sku":"1-PACK-G4U-SCREW","price":27.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/5739\/3161\/files\/2_3fd747ac-42d0-418e-8913-fbb5345a5b71.png?v=1759504813"}],"url":"https:\/\/gas4u.ie\/collections\/screw-in-co2-cylinders.oembed","provider":"GAS4U","version":"1.0","type":"link"}