The Rheem ProTerra Electric Hybrid is the smartest, quietest and most efficient water heater on the market. It features a hybrid heat pump design making it 400% more efficient than standard electric water heaters. It's so efficient, it pays for itself in 2-3 years. This ProTerra hybrid model features LeakGuard, the integrated the 360° leak detection system and the auto shut-off valve system that shuts off incoming water, locks water in the tank and protects your home. It's smart: with its built-in WiFi and the EcoNet app, you can check hot water availability, track energy usage and can control its modes; choose the efficiency or performance you want. As Performance Platinum, it comes with a 10-year warranty and 1-year in-home labor warranty.