With this system, the letters A to M, excluding the letter I, are used to designate the months.
Age of water heater rheem serial number#
Smith, Glascote and Perma-Glas, and used a 10-digit serial number with a letter-month/year code in the second third and fourth digits of the serial number. Smith Corporation manufactured only three brands of water heaters – A.O. A complete list of brands manufactured by American is contained in the decoder chart linked to this article. For example, the serial number 0602****** indicates that the water heater was manufactured the second week of 2006. The “year of” is the first two digits followed by the two digit week of the year. The chart helps to decode about 95 percent of the water heaters currently in homes in this country and it is periodically updated*.Īmerican Water Heater Company, manufacturer of 52 separate brands of water heaters, uses a 10-digit serial number with a year/week code in the first four digits of the serial number. At the end of the article, there are links to a handy decoding chart at the website. In this article I’ll explain the coding method used by each of the six major manufacturers. This makes the task of memorizing the coding methods far less formidable. Impossible until one realizes that until just a few years ago only six manufacturers produced those 100+ brands and some shared the same basic method for coding. The manufacturing date is coded into the serial number of water heaters and, since there are more than 100 different brands of water heaters in this country, trying to memorize every single serial number code at first seems impossible. In some parts of the country it is normal to expect between 10 and 15 years, while in others a homeowner is lucky if the water heater lasts 10 years. In fact, two neighbors with exactly the same brand water heater installed on exactly the same day on the same street in identical houses can have completely different experiences. In other words, there is no set maximum expected service life. Service life varies from place to place and is affected by the quality of the product, minerals/chemicals in water, the amount of maintenance the water heater receives and usage. How old is that water heater and what is the maximum service life an owner can expect? Your clients need to know the answers to these questions and others. This is the reason many inspectors want to be able to give their clients some idea of how old the device is and when they need to begin considering replacement. Home Inspector Training - Education, Home InspectorsĮditor’s Note: Though a water heater is relatively inexpensive compared to the price of a house, repairs for the damage caused when one suddenly has a catastrophic failure is likely to be expensive.
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