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Jeremy Suggs
Jeremy Suggs

Trane Gas Furnace Serial Number

You can find your serial number on the product itself or listed on your invoice. You can also contact our Warranty Specialists at 1-855-260-2975 or email for assistance.

trane gas furnace serial number

Yes! You can use your model number to register products like accessories and thermostats. Our online system will prompt you for the information it needs to successfully register your products that do not have serial numbers.

This varies on a product-by-product basis. To check your specific coverage, visit the Warranty Lookup page, and enter your unit serial number. If you need assistance, call our Warranty Specialists at 1-855-260-2975 or email to learn about your specific warranty.

40+ years of Trane serial numbers: This page explains or decodes seven Trane serial number styles, making the date lookup very easy for any year going back to the 1970s. The numbers were/are used on ACs, heat pumps, furnaces, air handlers and other equipment types.

Not Model #s: This post is about Trane serial numbers, not Trane model numbers that have nomenclature related to the series, size and performance of the Trane AC, heat pump, furnace or other equipment.

How old is the furnace in your home or prospective new home? Appliances do not live forever, so it is imperative that you know just how old your unit is. The Trane furnace age can be difficult to determine unless you know how to interpret the code found in the serial number. Depending on the age of the unit, the serial number may take one of four different forms.

Look for the data plate on your furnace. This is a small sticker or plate that contains all of the pertinent details you need to know about this particular unit. It includes your serial number, model number, ANSI rating, and more. Note that your serial number is not the same thing as the model number.

If the unit was made between 2002 and the present day, you should find a nine-digit serial number that consists of letters and numbers. Remember that your serial number is not the same thing as the model number.

The serial number should start with one to two numbers. These numbers indicate the year that your furnace was manufactured. For example, a two indicates that the furnace was made in the year 2002. A four would indicate that the unit was made in 2004.

The next numbers in the serial number represent the week that the unit was made. With a little clever math, you can figure out the manufacture date of your Trane unit right down to the month.

Identifying the age of the furnace is a little more complicated if it does not directly state when it was manufactured. You have to know how to read the Trane serial number and interpret the results. The structure of the serial numbers varies depending on when the unit was made. Older units have one style while newer units that were made in 2002 and later will have another. You should be well-versed in how to read both so that you are prepared for every situation.

Does the serial number on your unit start with a letter instead of a number? This is a clear indicator that you are dealing with an older furnace. Even without reading too far into the code, you should know that it is almost time to replace this unit. Once it has reached its tenth or fifteenth birthday, you will often start to see units break down. A serial number that starts with a letter is a clear sign that your unit is at least nineteen years old.

At this point, the code is changed to a nine-digit string of letters and numbers where the first numbers indicate the year that it was made. Reading this type of serial number can be a bit confusing unless you have a guide with you. Most people find it a challenge to memorize the alphabet coding system because it skips so many letters.

If you are unsure whether you are interpreting the serial number correctly, there is another piece of information on the data plate that can help confirm your guess. This is the ANSI (American National Standard Institute), sometimes also written as the ANS. You will see a specific code followed up by a year.

The year that you see listed here is not necessarily the same as the date that the unit was manufactured. This number is sometimes the same as the manufactured date or sometimes just a couple of years before. While it does not always conclusively give you a manufacture date, it can give you an idea of how old the unit is if you are having difficulty interpreting the serial number.

If somehow, you were to stumble upon a serial number that does not look like the two examples above, you might have an even older unit. Trane has switched how they structure their serial number several times over the years. Beginning in the year 1971, age was a number followed by a letter. It reads very much the same as the serial numbers from models 2002 to present, but it has a letter following the first number instead of more numbers.

Once you reach this phase, then you can refer to the Trane manufacture date code for units that were made from 1983 to 2001. It is highly unlikely that you will encounter many units with serial numbers like these, but it is best to be prepared just in case.

Particularly if you are getting ready to purchase a new property, you should check the age of all your appliances. Investing in new appliances right away can be quite costly. You want to make sure that the furnace in your home is relatively new. The best way to make sure is to look for the manufacture date or interpret the serial number on the Trane unit. With some of these helpful hints, you can become a pro at interpreting these codes!

The simple way to identify the age of a Trane HVAC unit is to look at the serial number. This is a string combination of letters and numbers that tells you when the unit was made. But first, you have to know how to read the Trane serial number nomenclature.

Trane uses alpha codes in their serial numbers to determine the age of manufacture. This HVAC company started this in 1987 with the letter B and skipped a couple of letters during the years. The first letter of the Trane serial number nomenclature gives the year of manufacture and the next two numbers are the week .

In 2002 they started their serial numbers with the year it was built. In 2002 the first character of the serial number is 2, in 2003, 3 and so on. If your Trane serial number is a 9-digit combination of letters and numbers that starts with a number, then the first number is the year. This company again made changes in year 2010. The first two digits of trane serial number lookup age are the year.

1) 2002 to present - If the serial number is a 9-digit combination of letters and numbers that starts with a number, then the first number is the year. Beginning in 2010, the first two digits are the year. The serial number below indicates the furnace was manufactured in 2002.

Check the year of ANSI (or sometimes ANS) rating elsewhere on the data plate to confirm. The ANSI standard gets updated every several years, so the year of the ANSI should be the same or a just few years earlier that what the serial number says. The serial number on the example below indicates it was manufactured in 2006, and the 2004 ANSI confirms it.

2) 1983 to 2001 - If the serial number starts with a letter, then that is the encoded year. W = 83, X = 84, Y = 85, S = 86, B = 87, C = 88, D = 89, E = 90, F = 91, G = 92, H = 93, J = 94, K = 95, L = 96, M = 97, N = 98, P = 99, R = 00, Z = 01. So the serial number shown below indicates that the furnace was manufactured in 1992. Notice that the year that the letter indicates is corroborated by the 1990 year of the ANSI rating above it, which should be the same year or just a few years earlier.

This recall involves Trane, American Standard, Ameristar brand or unbranded furnaces. The recalled furnaces include serial numbers beginning with 16304 through 16324. The model and serial numbers are printed on a white label on the left or right-hand side of the unit. The following model numbers are included in the recall:


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