Rheem recently unveiled one of the industry’s most efficient hybrid electric water heaters. Named ProTerra for its unmatched efficiencies, this ENERGY STAR certified water heater is over 400 percent more efficient compared to standard electric tank-type water heaters and is more eco-friendly than ever at up to 4.0 UEF. The ProTerra’s compact design makes it a perfect tank replacement for even the home’s smallest spaces. The system is available in 40-, 50-, 65-, and 80-gallon sizes to support various hot water needs. The ProTerra with LeakGuard model features built-in leak detection and auto-shutoff that limits water loss from the tank to no more than 20 ounces.