What's new from the International Builders' Show? Follow along as Matt Risinger talks with folks at the Rheem booth showcasing the Prestige Series Hybrid Electric Version 4 water heater. What will you love about this water heater? It features high-efficiency, mobile alerts, and a 10-year warranty.The hybrid refers to the heat tank that sucks heat out of the atmosphere to help heat the tank. This product has a 3.5 EF rating, which means for every $1 off electricity that goes into it, you'll get $3.5 worth of hot water. To say it's efficient would be an understatement. Also, don't worry about effectiveness, it actually heats faster than a standard water heater. As an added bonus, the byproduct of the heat pump is cold air, which you can use as a supplement to your air conditioning system.