![]() The company uses two general formats: one using only numbers and another using letters and numbers. This can make the process of a water heater serial number lookup a bit more complicated. Included Brandsįor State Industries, we have three examples. The third and fourth numbers indicate the year. In example two, the system consists of the letters ‘A’ to ‘M’, excluding ‘I’, to represent the month. ![]() The next two numbers relate to the week number. In example one, the year is represented by the initial two digits. In our examples below, the first one is pre-2000 and the second is pre-2008. Smith, it now uses an identical serial numbering system. Year (1st letter)Īs American Water Heaters is, as of 2001, a subsidiary of A.O. The first indicates the year and the second signifies the month (3). Rather than using numbers, Bradford White uses two letters. Rheem sometimes presents the key dates in this alternate way.įor their older pre-1999 models, Rheem used weeks instead of months (as shown in example two). Rather than being the first four digits, it is displayed as the third to sixth. However, in the second example, the numerical order has changed slightly. In the first example below, the first and second digits represent the month. Their newer models (constructed after 2000) are identified by the month and the manufacture date. Rheem also adopts a simple approach for its various brands. The two following numbers indicate the year. ‘A’ equals January and ‘M’ equals December. Current models also use the same sequence.įor models after 1997 but before 2008, you should see a number followed by a letter ranging from ‘A’ to ‘M’ (excluding ‘I’). Smith uses a very basic system that should be straightforward to figure out.įor their older, pre-1997 models, they state the year and week within the first four numbers (1) in this format: YYWWxxxxxx. To help you decipher your serial number, we have put together guides for some leading manufacturers and the various brands that use their systems. Manufacturers tend to use unique patterns or formats, so you need to find your specific manufacturer or brand in order to do this. The serial number contains two important details: the month and year of construction. This is usually placed near the energy guide or warning labels. ![]() You should try to start by decoding the serial number - find the details toward the side of the heater. On older models, however, you might need to do some detective work. When Should You Replace Your Water Heater?ĭetermining water heater age is simple on most newer models - the installation date is usually recorded on the information label.It’s best to hire a professional plumber who can let you know if there are any issues with the heater and give their professional opinion about when they should replace it. For example, if a serial number starts with “C19” the water heater was manufactured in March 2019.Įven if none of the above problems are occurring, if a water heater is over 10 years old, the homeowner should have it maintenanced. The next two numbers will indicate the year it was made. In most cases, the first letter of the serial number will indicate the month it was manufactured, starting with “A” for January, leading all the way to “L” for December. Luckily, the serial number on the water heater typically includes a manufacturing date. If the previous homeowner doesn’t have any documentation, it can be challenging to gauge how old the water heater is and when it needs to be replaced. Often, when a person buys a house, the water heater was installed years ago. Your water heater is old, or you’re not sure when it was last replaced. The issue worsens if the heating bill is going up at the same time. ![]() This can mean the water isn’t as hot, the periods of hot water don’t last as long, or there is no hot water altogether. ![]() The most obvious reason to get a new hot water heater is a lack of warm water getting to the house. You’re not getting enough (or any) hot water, but your heating bill has gone up. However, if the water continues to run sandy or cloudy, the heater must be replaced. Homeowners can rectify this issue by draining the contents of the tank and clearing out the sediment. Sometimes water may be cloudy or sandy, caused by a buildup of sediment in the heater tank. If it is not rusty, it may be time for a new water heater. If that water is also rusty, it may mean the issue is within the pipes, not the heater. Before jumping to conclusions about the water heater, homeowners should run cold tap water for a few minutes. This leads to discolored water coming out of the faucets. When corrosion happens, rust builds and can leak into the water supply. There are many reasons why this could occur, and it may not mean the water heater needs to be replaced. One common issue older water heaters have is producing discolored water. ![]()
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