Sure do! We 100% back our products and offer a money-back guarantee on all Sparkling Water Makers purchased on sodastream.co.uk. If you're not satisfied with your Sparkling Water Maker for any reason you may return it, postmarked within 30 days of date of purchase (please keep your dated receipts!) for a full refund of the total cost of the merchandise you ordered, plus any applicable sales tax. If you wish to make a return, please contact our customer services team.