Your filter will be guaranteed against failure due to defective materials or workmanship for the period specified. Please note that the guarantee does not include items subject to "wear and tear" such as UVC bulbs and foams. It also excludes the sealing ring and locking clamp. UVC bulbs will need to be replaced every 6 - 12 months. Please follow the instructions provided. The guarantee does not cover damage caused by accidents, misuse, neglect or use with any liquids other than cold water. Please keep your invoice / receipt and your instruction manual in a safe place.