Waterotor is designing our products to last as long as possible. On the 1,000 watt Waterotor, the mean time between failure for all the parts in the system is a minimum of 10 years (this is not to say that the product will not fail for 10 years). On the larger sized Waterotors all components are being designed to last a minimum of 20 years. Waterotor intends to offer a one year warranty on all our products.