Hello, Dependable! Tier1 is the clean water expert, our store is built to guide you through the journey to extraordinary water. Our products are built to provide years of dependable service. The first step to clean water is joining the Tier1 family, the next step is registering your product warranty. Tier1 system warranties protect systems purchased directly from Tier1Water.com. When registering your product warranty a vaild Tier1Water.com order number is required. Learn more about system warranties and terms and conditions below.