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AMERICAN AND AO SMITHĪmerican and AO Smith units use a slightly different format: 9806111111 (YYWWxxxxxx). Nnnn – the individual unit's serial numberĪs a result, this water heater was manufactured in November 2008. Let's explore what each part of the code means: Take the following serial number as an example: 1108D1111 (MMYYPnnnn).
Ao smith serial number decoding how to#
Each producer uses distinct formatting, and you will need to decode the serial number.Ĭoming up is a guide on how to determine how old the appliance is, depending on the manufacturer: RUUD OR RHEEMĭecoding a Ruud or Rheem water heater serial number isn't too difficult. If it doesn't, write down the serial number anyway because it generally indicates the appliance's manufacturing date. Check if the sticker has the exact installation date. You can generally find the sticker around the energy instructions and warning labels on either side. HOW DO I DETERMINE A WATER HEATER'S AGE?Įvery water heater comes with a manufacturer's label containing the unit's serial number.
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Fortunately, any homeowner can track down this valuable piece of information since there's no particular skill involved. If you want to verify the water heater's age, it's essential to locate the model number to confirm when it was manufactured. There can be any number of culprits, but one of the most common reasons for the malfunction is simply that the appliance's life has run its course. If a water heater is making strange noises, leaking, or not heating water properly, it means that the plumbing element has some significant problems.