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How old is my water heater?
Sunday, December 5, 2021
Use serial number to find age of your water heater
The year of manufacture of your water heater is encoded in the serial number on the data sticker. It is usually the first two numbers or second two numbers in the series, but varies by company and some use a single letter to indicate the year. Click on the brand of your water heater below to go to a page with instructions on how to interpret that specific manufacturer's serial number, along with examples. If you can’t find you water heater on the list or the serial number is not legible, keep reading further down for a solution.
A.O. Smith American American ProLine
Ariston Bosch Bradford White
Craftmaster Eccotemp EcoSmart
Eemax Envi-Ro-Temp GE GSW
Intertherm Jackson Jacuzzi
John Wood Kenmore Insinkerator
Marey Maytag Mor-Flo Navien
Noritz Paloma Premier Plus
Reliance Rheem Rheem tankless
Richmond Rinnai Ruud Seisco
SioGreen State Industries
Stiebel Eltron Takagi Tempra
Therm-a-flow Tiny Titan Titan
Thermalux Triangle Tube
US Craftmaster Westinghouse
Can’t find your water heater in the list?
There are less than a dozen major manufacturers of water heaters, but many sell under multiple brand names. More than a hundred names have been used and then abandoned over the years, and many of them are the same as the major retailers that sell them, such as Lowes or Ace. We can’t list them all here. But, if you look closely for the fine print on the data sticker, you are likely to find the actual manufacturer’s name to use to decode the serial number. Here’s an example below.
Can’t find the serial number?
Still stuck? Go to our blog post How can I determine the age of a water heater if the serial number is missing or decoding it is impossible?
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