by The Nashville Plumber on August 9, 2013

Need a new water heater?


Nashville Water Heater InstallationThere are basically two types of water heaters on the market today, storage and tank-less. There are pros and cons to both types of water heaters and some pretty significant differences.

Let’s start with the most common household water heater in America today, the storage water heater. Basically, the name says it all with these. These water heaters use an internal tank to store and heat water and come in various capacities, from 20 to 120 gallons. They heat with either electric elements or gas burners. The inlet, or cold water enters at the bottom of the tank, heats then is stored at the top of the tank. When using hot water it draws from the top, giving a consistent flow of hot water until the heated water is depleted, or it nears the bottom where the cold water is. A new tank will have a rating that tells the consumer how much hot water can be drawn off in an hour called the first hour rating.

A problem with storage water heaters is that they are constantly losing heat Through the walls of the tank itself. These types of heaters are insulated, however the temperature difference between the inside and outside is great thus a substantial amount of heat is lost when not in use. Because of this heat loss the water needs to be heated and re-heated regularly, causing a loss in efficiency that will affect your gas or electric bill.

A tank-less water heater is just that, tank-less. These heat on demand, usually letting a cup of water pass through before the heater kicks in. These, too, are run from electric or gas but since they don’t have a tank to store water, they do not need to heat and re-heat water saving a bit on the bills. Since these heat on demand and continue to heat while in use, you never run out of hot water, that is to assume a large enough one is installed. Tank-less water heaters are most popular in other countries, especially in Europe where space in homes and apartments is limited. These types of water heaters are generally more expensive than a standard water heater, quite a bit, in fact, but it is believed the difference is easily made up in utility savings.

Need a new water heater for your Nashville home? Call Green Hills Plumbing at (615) 383-3339 and schedule a service call today!

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