A person's hot water heater is used to heat water, store the heated water, and distribute it out as needed to whichever spigot is asking for it. Because one of the major functions of the water heater is to store the heated water, the storage tanks needs to be insulated to keep in the heat. Water heater storage tanks are created with an interior insulation and most current units are designed with good insulation! But, many older hot water heater tanks may not be insulated as effectively as they need to which will cost money. One can verify that their water heater is storing heat effectively in a short time and easily. By just placing ones hand on or close to the exterior of the storage tank. If it is warm, the water heater has to be better insulated. One can purchase water heater blankets without difficulty and install them without an issue. To read more about the right way to easily insulate your hot water heater look at this article. Here are some ideas on this plumbing topic.