Rheem Water Heater Age

Posted by: Mas Broto
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Rheem water heater’s serial number is the key to figuring out the age of your water heater. Since the date of the manufacturer isn’t always straightforward, we came up with a handy guide to help you decode your Rheem water heater’s serial number.

It can be hard to know how long your water heater will last. Depending on the model and the fuel source, a water heater could last anywhere from 8 to 20 years. Standard electric water heaters usually last between 10 and 15 years.

If you don’t know how old your current unit is, you should check to see if it’s time to get a new one. It’s a good idea to get ready before your water heater breaks down, which can be inconvenient or even disastrous.

How do you determine the age of a Rheem water heater?

You can determine the age of your Rheem water heater by decoding the serial number. It is a ten digits code that can be found on the product data plate.

Rheem tankless water heater serial number is located on the inside (right side) of the heater body. For the Rheem heat pump water heater, the serial number is located on a label on the upper left side of the system.

How do you read the serial number on a Rheem water heater?

Some companies, like Rheem, made it easy by putting the month and year in the first four numbers of the serial number. Here’s an example of a Rheem water heater serial number and how to read it.

Style 1

The first 2 digits are the month, and digits 3-4 are the year.
0806B17262 decodes to August 2006

Style 2

The 2nd and 3rd digits are the weeks of the year, and digits 4-5 are the year.
A321011869 decodes to the 32nd week of 2010

Style 3

The first 2 digits are the year, and digits 3-4 are the month with the sets of numbers separated by a period.
09.04-000021 decodes to April 2009

The rating plate on the new Rheem water heaters is easy to decode. It has information about the date of manufacture as well as size and capacity. There is also a field shown as MFG. DATE that will make it easier to read the age of the Rheem water heater.

About Rheem

Rheem is known for making high-quality water heaters, and their serial numbers are easy to read. Rheem also makes water heaters that are sold under different brand names. Rheem makes the following brands, and most of the time, their serial numbers can be read the same way.

  • Ruud
  • Rheem/Ruud
  • Richmond
  • Vista Therm
  • Citation
  • Aqua Therm
  • Energy Master
  • Vanguard
  • Cimarrom
  • Coast to Coast
  • Lowe’s
  • Servi-Star
  • True Value
  • ABS
  • Intertherm & Miller
  • Mainstream
  • Montgomery Ward
  • General Electric
  • Professional

If you doubt when your water heater was installed, you should check the date of manufacturer to see if it’s about time to get a new one. You can figure out how old your Rheem water heater is by following the steps above.

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Mas Broto
Have been in the heating and air conditioning (HVAC) industry for over 20 years. He is person that will grow and thrive to learn more about the HVAC industry throughout his career. Mas Broto is also a blogger, who's dedicated to bringing you the best knowledge to get ahead in the game of life.