They are less prone to build up and will not burn out. They are made from high grade stainless steel. Some of them come with a lifetime gaurantee. This type is the best element that you can get. This type is made from copper and may have a zinc coating. High density elements are the most suceptible to corrosion and failure due to the high heat generated. This type will come in either a screw type or flange type connection. This type is the least expensive and will likely be he type installed originally in your water heater. This style will have a screw type fitting to install it. Low density elements are a little more expensive than high density types. This type of element provides more heating surface and is less prone to corrosion. This type of element is made from copper with a magnesium oxide and nickel coating. They are also coated and/or made from different materials to resist corrosion. Low density elements have more surface area. The low density elements have more surface area and therefore do not need to get as hot.ĭensity has to do with the surface are of the heating element. Low density elements are considered better, they last longer and are less prone to build up. There are both 'high density' and 'low density' hot water heater elements. Not sure if the elements are even the problem? See ' Troubleshooting Electric Water Heaters' or ' Gas Water Heater Troubleshooting' for a complete listing of problems and solutions. Not sure if your elements are bad? See the article, ' Electric Water Heater Element Testing' for information on how to check the elements. There are a few things to keep in mind before you run to the hardware store or order online. If you have determined that your water heate elements are bad, you are going to need to purchase new ones.
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