How Do I Know When My Water Heater Was Manufactured
Based on your units serial number, the manufacturing date is easy to determine:
- The first two digits of the serial number are related to the manufacture year
- The next two digits are related to the manufacture week
The serial number can be found on the rating plate a stickers that looks like the one below :
If you want to know when this BFC was produced, you can look at the serial number. That starts with 20. The device was produced in 2020. The next two digits are 37. So that is week 37. That means it was produced between September 7 and 13, 2020.
How To Determine The Age Of Your Rheem Water Heater
Because Rheem manufactures water heaters under at least 20 different brand names, it may appear that determining their dates of origin is difficult. However, the firm employed the same coding technique for all five of its water heater designs, making it easy to determine their origins. Once youve identified the style, youll have the information you need to determine when your unit was built. Style 1: The numerals 1-2 reflect the month of manufacturing, while the digits 3-4 signify the year of manufacture.
Style 3: The numerals 3-4 represent the week of the year in which the unit was created the digits 5-6 denote the year in which the unit was created.
Style 5: What distinguishes this style from the other units in the group? The year is established by the first two digits, and the month is represented by the third and fourth digits nevertheless, these two sets of numbers are always separated by a period .
Water Heater Model Number And Age
While water heaters are a key component for home comfort, they dont last forever. Its recommended to replace your water heater every 10 years. If you are experiencing some issues with your water heater, the water heater model number and age can help you determine if its time for a replacement.
Every water heater comes with a Rating Plate. This plate contains important information about the water heater and is important for the safety of the homeowner. While most of the information listed will be used by a licensed technician, some is useful for the homeowner, including the serial number, which shows the manufactured date commonly the first four numbers the model number the Input BTU gallon capacity and wattage elements . You can determine the water heater age by examining the serial number.
Below are a few samples of different manufacturing companies Rating Plates to help you to better understand how to decode your water heaters age. We have provided an example of an AO Smith Water Heater age, Reheem Water Heater age, American Water Heater model numbers and Bradford White serial numbers.
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What Is The Best Way To Install Or Replace A Water Heater
Homeowners: Do you have to replace your water heater? Ask your plumber about the items below. Regardless of whether the water heater is tankless, electric, or gas, a sound installation will include the following:
- A drain pan and overflow drain that exits to the outside, if possible
- The exit for the Temperature Pressure Relief Valve should be visible to occupants in case of a leak or problem.
- A leak sensor should be installed near the floor
- Good accessibility should be provided for maintenance, inspection, and repair
- The expansion tank should be replaced
- The pressure reduction valve or PRV should be replaced
- The main water shut-off valve should be replaced
Ao Smith Water Heater Age Or Manualsao Smith Water Heater Installation Repair

- about how to find out the age of an AO Smith water heater
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A.O. Smith Water heater age decode key & water heater manual sources.
Age decoding guide for water AO Smith water heaters, manuals, repair & maintenance guides.
The water heater age guide on this page works for these brands: AO Smith, Glasccote, National, Perma-Glas water heaters.
We give contact information for AO Smith water heater, geyser, cylinder, calorifier manufacturers and for water heater installation, operation, & troubleshooting manuals.
We include a table of common error codes given on some models of A.O. Smith water heaters.
Our photo at page top shows an oil fired water heater with a backpressure problem and other safety concerns like a missing extension tube on that relief valve, and maybe a missing draft regulator and perhaps an oil line that is not protected from damage.
We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need.
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Where Is Serial Number On Ao Smith Water Heater
You can tell the AO Smith water heater age by the serial number. To find out the age, you first need to find the serial number location on AO Smith water heater.
The serial number on AO Smith water heater is on the label close to the bottom of the water heater. The label has information on the water heater, including the serial number, approved use, model number, part number, and wattage. It also shows the capacity, circuit, and working pressure.
The serial number location on AO Smith water heater is critical because you get all the information you need about the heater. When reporting a fault or buying parts for the heater, you will need to know how to tell AO Smith water heater age.
This video shows where to find the serial number and read the age of your AO Smith water heater.
Water Heater Age & Replacing Your Water Heater
Unfortunately, water heaters do not last forever and there will come a time when your water heater age will grow old and it is time for a replacement. On average, a water heaters lifespan is anywhere from 8 to 12 years.
Take a look at your water heaters serial number to decipher your water heaters age to determine if it is time for a water heater replacement. If you are trying to determine How old is my water heater, then use this guide to determine the water heater age of your water heater.
If you are having trouble determining the age of your water heater, then feel free to contact us today and we will gladly help you determine your water heaters age based on its brand.
Upgrade your Water Heater Today! Click the button below to fill out the form or call us at 631-629-4877 to learn more about our all of our Water Heaters.
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A O Smith Water Heater Age
Electric A O Smith WH Serial# 0824A023401Is it 2008 or 2002? Thanks.
**AO Smith – **Can be confusing digits may be comprised of letters & numbers. May be one, two, or no letters.If two letters first, next two numbers are year.If one letter first, followed by two numbers and another letter, next two numbers are year.If one letter first, next two numbers are year, providing no letter follows.If two numbers first, this is year.
Gary
Reading the serial # posted, would you agree with Jan. 2002?Thank you.
No, the first two #’s are 08 so 2008. Which would make it new, Is it?
No, the first two #’s are 08 so 2008. Which would make it new, Is it?
I repoprted the age as 2008. It would certainly help if the manufacturers would establish a standard date system! Thanks for the help.
I just ran into a short 50 gallon A O Smith electric water heater with serial number: 790-A-73 368 36.Any guesses or knowledge of age?
From my experience its 1973. The three water heaters that I have seen with that format the age of the house lined up with that number.
Can anybody help Im trying to figure out the age of this a o Smith water heater s# 870-f-80-53817. Email me if anybody can help. Thanking you in advance
You should know thisYep!
Heck, seeing as this thread is 9 years old, the OPs WH of topic would have worn out by now even if new at the time of his post!!!
Lochinvar Water Heater Age
Lochinvar is another another company that employs letters to signify the years and months of the year and month of the month.
Typically, the serial numbers for water heaters from the manufacturer begin with two letters, with the first representing the year and the second representing the month as the initial letters. Heres the secret to remembering the years:
- 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=2016
And heres the key to the months ahead:
Because A = 2004 and B = February, a serial number beginning with AB would have been created in February 2004, indicating that the number was created in February 2004. Lochinvar water heaters are also offered under the Energy Saver, Golden Knight, and Knight brand names, and the serial number on these units may be read in the same way as the serial number on the Lochinvar water heaters described above.
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Determine The Ao Smith Water Heater Age
Why do we need to know about the water heater age? It is good to know about the age of your water heater. You will know when you need to repair and service your water heater.
You will know when you need to replace and buy the new water heater. By understanding the age, you will minimize the risk of water heater problems that might happen.
How do you determine the AO Smith water heater age? We can see the serial number of our water heater to determine the AO Smith water heaters manufactures or age. There are three serial number styles, which tell about the manufacturer or age of the water heater.
First, you have to take a look at the first four digits of the serial numbers. It represents the year and week of when it is produced. Second, most manufacturers also use letters as the month of production. The date of the manufacturer is coded at the first four or three digits of the serial numbers.
You Can Determine How Old Your Residential Water Heater Is By Looking At And Decoding Data On The Water Heaters Label
Locate the manufacturers label with the serial number on the side of your item and write it down for future reference. In most cases, this sticker is placed around any warning labels as well as the energy guidance. Check to see whether the sticker has a date on it indicating when it was installed. The serial number of your water heater should be written down if you dont already have it since it generally denotes the year and month that the water heater was manufactured. Each manufacturer has a unique format, and you must decode the water heater serial number in order to utilize it.
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Ao Smith Water Heater Manuals & Troubleshooting Guides
- A.O. Smith CONDENSING WATER HEATER TROUBLESHOOTING GUIDE , A.O. Smith Water Products Company500 Tennessee Waltz ParkwayAshland City, TN 37015Toll Free: 18777372840
- AO Smith RESIDENTIAL FVIR WATER HEATER SERVICE HANDBOOK Models: GCV, GCVH, GVR, GCVL, GVRL, GCVT – SERIES 300/301 XCV, XVR, XCVL, XGV, XVRL, XCVT – SERIES 300/301
- AO SMITH FVIR RESIDENTIAL GAS WATER HEATER MANUAL Residential Gas Water Heater with the Flammable Vapor Ignition Resistance system, NATURAL & L.P. GAS MODELS
State Water Heaters Water Heater Age

State Water Heaters is a manufacturer of water heaters that are sold under a variety of trade names. The sort of serial number that you will discover on a water heater made by this firm may be classified into three different categories. With the first kind, the serial number will begin with four numerals at the beginning of the string. This time, the first two numbers represent the year and the second two numbers represent the week of the year. This signifies that a water heater with the serial number 1210 was constructed in the tenth week of 2012, according to the manufacturer.
The key is as follows:
In the following alphabetical order: A = January B = February C = March D = April E = May G = June H = August J = September K = October L = November M = December A = January B = February C = March D = April E = May F = June G = July H = August J = September K = October L = November M = December A = January B = February B = January A =
- Barnett, Century, Crosley , Freedom , Hardware House , Kenmore , Mission , Patriot , Penfield , Regency , The Plumbery , and Thermo-Ki.
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Water Heater Selection Guide
How does a Water Geyser Work?
Water geysers provide hot water output at the desired temperature by imparting heat to the input cold water. An energy source is used to generate heat and raise the temperature of the water to the required levels. Depending on the type of water heater, an inner container or tank is provided to store the hot water, and thermal insulation is provided to retain this heat until it is used.
What are the various types of Water Geysers?
Water geysers are classified based on the source of energy used to heat water. The commonly available geyser water heaters are Electric Water Geysers, Solar Water Geysers, Gas Water Geysers & Heat Pump Water Heaters.
What are the types of Electric water geysers available?
Broadly, there are three types of Water Geysers Storage, Instant & Tankless electric.
Storage, Instant or Tankless?
Where should the water geyser be installed?
Different installations require different capacities of electric water heaters. In kitchens, for example, the hot water requirement is minimal, and you need a water geyser of a smaller capacity. On the other hand, overhead showers require higher quantities of water, and you need a geyser water heater with a much higher power capacity. Eventually, Jacuzzis and Whirlpools have the maximum hot water requirement, and for these installations, you will require electric storage water heaters of substantial capacity.
Should the geyser be installed in a warm or cold climate?
How To Determine The Age Of Ao Smith Water Heater From Serial Number
There is a lot of information in A.O. Smiths water heater serial numbers, like when the unit was made. With your units serial number, its easy to figure out the year of the manufacturer. In this post, Ill discuss determining how old your A.O. Smith water heater is based on its serial number.
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American Water Heaters Water Heater Age
If your water heater is an American Water Heater, then you can use the information below to determine American Water Heaters Heater Age.
To determine the age of your American Water Heaters water heater age, it is pretty simple. The serial number will consist of 10 digits. The first two numbers will tell you the year and the second two numbers will tell you the week of the year.
The following brands are sold under American Water Heaters and can be read the same way:
Ace, American Hardware, Best, Best Deluxe, Apex, Aqua Temp, Agua Therm, Aquamatic, Champion, Craftmaster, De-Limier, Deluxe, Eagle, Earls 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
How Long Do Water Heaters Last
A water heater can last anywhere between 8-12 years. Once you calculate the age of your water heater, you will then need to determine if the age of your water heater is past due for maintenance or replacement.
We will list the most popular brands in this water heater age guide so that you can determine your water heaters age hassle free.
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How Old Is My Water Heater
When owning a water heater, it is important to know your water heaters age in order to decide whether it is time to service or replace your water heater. If you have owned a water heater for a long time or just moved into a new home with a water heater you are not familiar with, then it would be a good idea to determine the age of your water heater.
Rheem Water Heater Age
For most Rheem models, their construction dates are identified by the month, then the year on the serial number. These numbers are usually displaced as the first four numbers. In some cases, they may be displayed as the third to sixth numbers.
Example: If the Rheem serial number is 1110****** then the water heater was constructed in November 2010.
It is also important to note that Rheem produces water heaters under other brand names as well. These water heaters have serial numbers that can be read the same way. However, some of them may have the week of the year listed instead of the month.
The following water heaters are also produced by Rheem: Ruud, Richmond, Citation, Aqua Therm, Vista Therm, Energy Master, Vanguard, Cimarrom, Coast to Coast, Lowes, Servi-Star, True Value, ABS, Intertherm & Miller, Mainstream, Montgomery Ward, General Electric, and Professional.
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