Easy to Install:no require plumber,finish DIY installation less than 30 minutes.If there is any problems,please feel free to contact us by email first Effectively filter impurities to prevent pollution,water and air combine to create a quiet soft water experience. Product at very attractive price.5 years parts warranty 100% stainless steel quality ACS Certification: This product has been tested and approved for ACS certification. All parts in these kitchen taps have been approved for contact with potable water. The ACS certificate is issued by a laboratory which specialises in ACS. Looks nice - works well - plumber fitting tap impressed with quality - good price.