A water heater that is a tank does not have copper coils. If gas fired, there is a burner at the bottom that heats the water in the tank the same way a tea kettle is heated on the stove. An electric heater has two heating elements in the side, top and bottom that heat the water. A tankless water heater has a coil with a flame in the middle that heats the water. This type heats the water as you use it and for as long as you want.
An indirectly heated tank has a heat exchange coiled tube (calorifier) mounted inside the skin of the tank. Hot water or steam travels through the tube and radiates heat into the tank water.
The amount of copper in a hot water heater can vary depending on the size and type of the heater. On average, a residential hot water heater may contain about 5-15 pounds of copper in components such as the heat exchanger, piping, and connections.
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GE hot water heaters are made by Rheem.
There is a coil of copper tubing that sits in the flame. When you open the hot water faucet, the flame ignites and starts heating the water. The coil is long enough that the water has time to heat while it is in the flame. That's why you can have hot water as long as you want.
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The heating element whether it be electric or gas is located close to the faucet so that the water flows through and is heated on its way to the faucet therefore you need a separate unit for each sink. Above answer is called a "on demand unit", a tankless coil for a hot water boiler uses a spiral coil of copper that is bolted into your boiler, with the hot combustion gases heatintg the coil of copper that has the domestic cold water flowing thru it, heating the cold water into hot water as it travels to your faucets.
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no, hot water heaters
A coil that transmits heat either an electric element or possibly a copper / steel coil immersed in a liquid and steam passes through the coil or extreamly hot water and by osmosis the ambient medium gets hotter A coil that transmits heat either an electric element or possibly a copper / steel coil immersed in a liquid and steam passes through the coil or extremely hot water and by osmosis the ambient medium gets hotter
One of the best electric hot water heaters on the market is Reliance Lowboy and Reliance 80 gal. The are sold at Ace Hardware. There is a web site that rates hot water heaters and that is Heater.Housekool.com They list all the top rated electric and gas hot water heaters.