For returns, check the policy of the retailer you purchased from, such as Amazon or The Home Depot. Return windows and eligibility vary by seller and order. iSpring Customer Support (support@ispringfilter.com) can help with product questions and compatible replacement parts. Eligible iSpring water filtration systems come with a 1-year limited warranty that begins on the original purchase date. Register your system with iSpring to verify your purchase and activate coverage. Keep your receipt or order confirmation as proof of purchase. 3-, 5-, and 10-year extended warranty plans are available for eligible systems. Contact iSpring Customer Support (support@ispringfilter.com) to confirm which plans are available for your model.