If you want the water heater to last longer than usually expected, then you need to know some basic information about the maintenance. The maintenance is very important because it will decrease the risks of malfunctions. Like any home appliances, the water heating system will require constant cleaning. At the same time, the overused parts of the system will need to be replaced.
The most common problem that will affect your water heater is rust. Since in most cases the tank of the heater is made of steel or some kind of alloys, it will be affected by rust sooner or later. If you noticed that a part of your heater has rusted, you will have to either cleaning it or replacing that part.