AO Smith Signature 240-Volt 18-kW 1.6-GPM Tankless Electric Water Heater °Enjoy Hot Water for Up To 2 Showers when Sized Appropriately °Easy Installation - Wall Mount Installation Uses Standard 3/4-in NPT Water Connections and Does Not Require Venting °Simple Maintenance - No Moving Parts. Uses Standard Heating Elements for Easy Replacement °Scale Reduction Technology and Heating Element Power Sharing Reduces Harmful Mineral Deposit Buildup Resulting in Extended Product Life °Dry-Fire Protection Prevents Premature Element Failure for Worry-Free Installation °Simple Temperature Adjustment from 90° to 140°F using Intuitive Digital Interface This unit is Brand New NIB Has never been opened or used Come with manufacturer warranty. Has never been registered, so warranty will start when registered Feel free to contact for more information or details...... Thanks for Looking!