You may want to replace an old water heater with a new one. Whirlpool offers various models that include LED displays, self-cleaning capabilities, and Energy Smart systems. The newer models have fewer moving parts and more electronics, which means they need less maintenance than their older counterparts. The parts of a water heater include thermostats, flu dampers, pilot assemblies, and elements. The warranty is also six years. You should also check the quality of water heater before purchasing it. The Whirlpool brand is widely recognized for its quality. Some of their models are more energy efficient than others. Most of them use an anode rod to protect the tank from corrosion. The rods last longer than the actual water heater tank. If you are not sure about the quality of a water heater, ask a customer service representative for more information.