{"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\/products\/gas4u-screw-in-gas4u-co2-gas-cylinder-refill-425g","provider":"GAS4U","version":"1.0","type":"link"}