17a inner door (after serial # sg) - jkt1110 jkt1110. jkt1110 jkt1110 replace 'e' with 's' to indicate 10 year tank warranty model.use 3/4' wtr1019 nipple/anode before serial number sg, use 3/4' wtr1013 anode & 1' wtr1048 nipple after serial number sg.use 3/4' wtr1018 dip tube before serial number sg, use 1' wtr1100 dip tube after serial sg. Lochinvar Energy Saver. 11-digit alpha-numeric serial number. The first two positions are the year followed. Current (2020) Lochinvar water heater serial numbers are 13 numeric digits for which we have not yet a decoder. Our page top modern Lochinvar heater Model EJW020PS 102 has a S/N of 457. For more about Lochinvar Water Heaters - see BRADFORD WHITE. Contact: Lochinvar, LLC World Headquarters 300 Maddox Simpson Pkwy. Lebanon, TN 37090 USA.
Water heaters are not cheap, and buying a new one can be a significant investment. Thankfully, if you buy a reliable model from a respected brand and keep it properly maintained, you can expect it to give you a good many years of service.
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However, at some point, it may break down and need repairing or even replacing entirely – and if this happens too early, you will need to know its age to see if it is still under warranty.
Bad north mac download. If you don’t know where to look, here’s our guide to how to determine the age of your water heater.
Different companies, same technique
How to work out the age of your water heater will depend on the manufacturer of your unit, but the idea is essentially the same.
Every water heater has a rating plate on it that contains information such as the name of the manufacturer, the model, the wattage of the heating elements, its capacity in gallons and more.
The information displayed varies – for example, if you have a water heater with a tank, the information will be different from the information on a tankless water heater. However, one constant is the serial number, and this usually contains the date of manufacture.
The format is different for each company, but it’s not difficult to understand – you just need to know how to read it. So now let’s look at some of the most common manufacturers and brands to see how it’s done.
If you want a preview to show you the kind of thing you should be looking for, check out this video before reading on – although again, remember that the rating plate on each water heater will be slightly different.
Rheem water heater age
A good company to start with is Rheem. This company is known for its high quality electric tankless water heaters and its tankless gas water heaters, and rating plates on models from this company are easy to decipher.
With a Rheem water heater, once you have located the rating plate, you need to find the serial number, which will be made up of 10 numbers and letters.
Once you have found this, look at the first four numbers. The first two numbers represent the month of manufacture while the second pair show the year of manufacture.
For example, if the first four numbers are 1199, the water heater was made in November of 1999. 11 is the month, November, and 99 is the year, 1999.
Rheem also makes water heaters that are sold under other brand names. The following brands are manufactured by Rheem, and for the most part, their serial numbers can be read in the same way – although sometimes the week of the year is given instead of the month.
- 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
A.O. Smith water heater age
A.O. Smith water heater rating plates can be a little more difficult to decode, but once you know what to look for, it’s still fairly straightforward.
The serial number will consist of 10 numbers and letters, and you simply look for the first four numbers in the sequence to find the date of manufacture.
With A.O. Smith, the year of manufacture comes first, followed by the month, so for example, if the first numbers in the serial number are 9710, the date of manufacture was October 1997.
The Glascote and PermaGlas water heater brands are also manufactured by A.O. Smith, and their rating plates can be read in the same way.
American Water Heaters water heater age
American Water Heater rating plates are easy to read. They consist of 10 digits, the first two of which tell the year and the second two of which tell you the week of the year.
This means a serial number starting with 9835 would have been made in the 35th week of 1998.
American Water Heaters makes units that are sold under many other brand names. The following brands are also manufactured by American Water Heaters and can be read in the same way:
- Ace
- American Hardware
- Best
- Best Deluxe
- Apex
- Aqua Temp
- Agua Therm
- Aquamatic
- Champion
- Craftmaster
- De-Limier
- Deluxe
- Eagle
- Earl’s Energy Saver
- Environtemp
- Four Most
- Hotmaster
- Hotstream
- King-Cleen
- King-line
- Master Plumber
- Mor-Flo/American
- Nationaline
- Neptune
- Penquin
- Premier
- Prestige
- Proline
- Proline-Plus
- Quaker
- Quick-Flo
- Raywall
- Revere
- Riveria
- SABH
- Sands
- Sentinel
- Service-Star
- Shamrock
- Special Deluxe
- Standard
- Super Eagle
- Sure-Fire
- Thoro-clean
- Tru-Test
- Tru Value
- S. Supply
- Whirlpool
- XCL-Energy Saver
Bradford White water heater age
With Bradford White, things are a little more complicated since this manufacturer uses a letter in the serial number to represent the year and a letter to represent the month.
This means you need to know which year and month each letter stands for or you have no way of telling the age of the water heater.
The first letter in the serial represents the year – here is the key that tells you the year the first letter stands for:
- T = 2019
- S = 2018
- P = 2017
- N = 2016
- M = 2015
- L = 2014
- K = 2013
- J = 2012
- H = 2011
- G = 2010
- F = 2009
- E = 2008
- D = 2007
- C = 2006
- B = 2005
- A = 2004
- Z = 2003
- Y = 2002
- X = 2001
- W = 2000
- T = 1999
- S = 1998
- P = 1997
- N = 1996
- M = 1995
The second letter in the serial number tells you the month – here is the key to decoding this information:
- A = January
- B = February
- C = March
- D = April
- E = May
- F = June
- G = July
- H = August
- J = September
- K = October
- L = November
- M = December
So with this information, you can now work out that a water heater with a serial number of BH6511396 was made in August of 2005 since B stands for 2005 and H stands for August.
Bradford White also makes water heaters that are sold under the Jetglas brand, and the serial numbers of these water heaters can be read in the same way.
State Water Heaters water heater age
State Water Heaters makes heaters that are sold under a range of brand names. There are three possibilities for the type of serial number you will find on a water heater manufactured by this company.
With the first type, the serial number will begin with four numbers. In this case, the first two stand for the year and the second two for the week of the year.
This means a water heater with a serial number 1210 would have been manufactured in the tenth week of 2012.
The second type uses a letter to represent the month, which is followed by a number telling you the year. Here’s the key: Fallout 4 weight limit.
- A = January
- B = February
- C = March
- D = April
- E = May
- F = June
- G = July
- H = August
- J = September
- K = October
- L = November
- M = December
This means that, for example, a serial number beginning with C12 would have been made in March of 2012.
The third type is exactly the same as this except that there is an extra digit before the letter. For the purposes of working out the age, simply ignore the first digit and then read it in the same way as the second type.
Here is the list of other brand names under which State Water Heaters units are sold:
- Ace
- Ambassador
- Barnett
- Century
- Crosley
- Energy Stretcher
- Freedom
- Freedome/Nipsco
- Hardware House
- Kenmore
- Master Plumber/True5
- Mission
- Nationaline
- Patriot
- Penfield
- President
- Regency
- Reliance
- The Plumbery
- Thermo-Ki
Lochinvar water heater age
Lochinvar is another manufacturer that uses letters to represent years and months. The company’s water heater serial numbers begin with two letters, the first of which represents the year and the second of which represents the month.
Here is the key for the years:
- P = 2017
- N = 2016
- M = 2015
- L = 2014
- K = 2013
- J = 2012
- H = 2011
- G = 2010
- F = 2009
- E = 2008
- D = 2007
- C = 2006
- B = 2005
- A = 2004
- Z = 2003
- Y = 2002
- X = 2001
- W = 2000
- T = 1999
- S = 1998
- P = 1997
And the key for the months:
Lochinvar Boiler Serial Number Date Code
- A = January
- B = February
- C = March
- D = April
- E = May
- F = June
- G = July
- H = August
- J = September
- K = October
- L = November
- M = December
This means that a serial number beginning with AB would have been made in February 2004 since A = 2004 and B = February.
Lochinvar Serial Number
Lochinvar water heaters are also sold under Energy Saver, Golden Knight and Knight brand names, and serial number on these units can be read in the same way.
Check the warranty information
Here we have mentioned some of the most famous manufacturers and many popular brands, although it is impossible to list every single one. However, just about every company uses a similar system, and all you need to know is how to read the serial number.
If you have a heater we have not mentioned, the best advice is to find the website of your heater’s brand and look up how to read the serial number there. That way, you can be sure you have the correct information about how to determine the age of your water heater.