The self-cleaning diff user dip tube helps reduce sediment buildup inside the water heater tank to preserve high efficiency output for years of trouble-free service.6-Year Limited Tank Warranty, 6-Year Parts Warranty, 1-Year Labor Warranty..95 Energy FactorFused Ceramic Shield provides a corrosion-resistant lining for years of dependable protection.Self-Cleaning Diffuser Dip Tube helps reduce sediment buildup inside the water heater tank to preserve high efficiency output for years of trouble-free operation (Price subject to change without notice. Check stock before order)