One's hot water heater is used to heat water, store the heated water, and deliver it out as needed to whichever spigot is asking for it. Given that one of the main functions of the water heater is to hold the heated water, the storage tanks must be insulated to keep in the heat. Water heater storage tanks are created with an inner insulation and many current designs are manufactured with good insulation! However, 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 properly very quickly and easily. By simply placing ones hand on or close to the exterior of the storage tank. If it is warm, the water heater should be better insulated. One can purchase water heater blankets without difficulty and install them without a problem. To get more info about the right way to easily insulate your hot water heater have a look at this article. Here are some ideas on this plumbing topic.