Bradford White Water Heater Age: How to Read the Serial Number (and What It Means)

If you’re standing in your garage with a flashlight, squinting at the sticker on your water heater, you’re in the right spot. Maybe you’re buying a house and the inspector flagged it. Maybe it’s making a rumbling noise it didn’t make last year. Or maybe you just want to know if that tank is living on borrowed time before it decides to empty 50 gallons onto your floor.

Here’s the good news: figuring out your Bradford White water heater age takes about two minutes. Bradford White hides the manufacture date inside the serial number, and once you know the code, it’s easy to read. Below you’ll find a free Bradford White serial number lookup tool, the full Bradford White water heater age chart, and the one trick most guides leave out, which is how to tell whether your “S” means 1998 or 2018.

We’re First Quality Plumbing, and we’ve been fixing and replacing water heaters across Central Florida since 1998. If you’d rather have someone just come look at it, schedule a visit and we’ll tell you straight whether it’s worth fixing.

Bradford White Serial Number Lookup (Free Age Decoder)

Type your full serial number in the box below, exactly as it appears on the label. The decoder reads the date code, checks the digit count, and tells you how old your water heater is.

Where to Find the Serial Number on a Bradford White Water Heater

Every Bradford White tank has a rating plate, which is a label (usually white or silver) stuck to the side of the tank. On most gas and electric models, it’s on the upper half of the tank, close to the gas control valve or the upper access panel. On heat pump models like the AeroTherm, check the side of the unit near the top.

The label shows two numbers you’ll care about:

• Model number, which tells you the type, size, and warranty length (more on that below). It usually starts with letters like RG, RE, URG, or RE2H.
• Serial number, which starts with two letters followed by a string of digits, something like PK12345678. This is the one that tells you the age.

A few things that help in the real world:

• Take a photo and zoom in. Older labels fade, especially in hot Florida garages. A phone photo with the flash on is usually easier to read than squinting at the tank.
• Don’t confuse the letter O with a zero. Bradford White doesn’t use the letters I, O, Q, R, U, or V for the year, so if the first character looks like an O, it’s almost always something else (with one rare exception we’ll get to).
• Tight closet? Don’t pull the tank out. Slide your phone into the gap and snap a picture. Moving a full water heater can strain the connections.

How to Read a Bradford White Serial Number, Step by Step

Let’s use a real-world example: PK12345678.

1. Look at the first letter. That’s the year code. “P” lines up with either 1997 or 2017 on the chart below.
2. Look at the second letter. That’s the month code. “K” is October.
3. Count the digits after the letters. There are eight, which means this heater was built after Bradford White switched to eight-digit production numbers in December 2007. So it’s 2017, not 1997.
4. Do the math. Built in October 2017, which makes it about 9 years old in 2026. That’s right in the window where we’d start planning a replacement instead of waiting for it to fail.

That’s really all there is to it. The part that trips people up is step three, so we’ll dig into that in a minute.

Bradford White Water Heater Age Chart

These are Bradford White’s official date codes. Find your first letter in the year chart and your second letter in the month chart. Note that the year chart skips I, O, Q, R, U, and V, and the month chart only uses A through M (skipping I).

Year Codes (1st Letter of the Serial Number)

Heads up: the cycle started over in 2024. A Bradford White water heater installed in 2024 starts with “A,” one from 2025 starts with “B,” and brand-new units made in 2026 start with “C.” Letters D through Z won’t show up on new tanks again until 2027 and beyond.

Month Codes (2nd Letter of the Serial Number)

“Is Mine From 1998 or 2018?” How to Break the 20-Year Tie

This is the question we hear more than any other. Because the year letters loop every two decades, the chart alone can’t always tell you the Bradford White manufacture date for sure. Most of the time, common sense handles it (a 25-year-old tank looks like a 25-year-old tank), but here’s how to be certain.

1. Count the digits (the easiest trick)

Bradford White’s production numbers were seven digits long until December 2007, then went to eight. So:

• SJ1234567 (7 digits) = September 1998
• SJ12345678 (8 digits) = September 2018

That single detail settles the question for almost every tank out there. The only time it can’t help is when two possible years both fall on the same side of December 2007, like a “D” unit with seven digits (1987 or early 2007) or an “A” unit with eight digits made in the new cycle. For those, keep reading.

2. Check the ANSI standard year on the label

Gas water heater labels list the safety standard they were certified to, something like “ANSI Z21.10.1-2017.” A heater can’t be built before the standard it was certified under, so if the label references a 2014 or 2017 edition, you know you’re not looking at a 1990s unit.

3. Look for other clues on and around the tank

• The installer’s sticker. Most plumbers put a sticker on the tank with their name and the install date. It’s often the fastest answer.
• Permit records. In Florida, water heater replacements typically require a permit. Your county or city building department’s online permit search can show when the last one was pulled for your address.
• The design itself. Gas units with a sealed combustion chamber and flame-arrestor system (Bradford White calls theirs the Defender Safety System, introduced in 2003) are newer designs. Electronic displays, Wi-Fi modules, and heat pump units on top are obviously modern.
• The house history. Home inspection reports, seller disclosures, and old receipts often list the water heater’s age.

Still stuck? Call Bradford White with the full model and serial number, or have a plumber take a look. It’s usually obvious in person.

What If My Serial Number Doesn’t Match the Pattern?

A small number of Bradford White units don’t follow the standard two-letter format. Here’s what you might run into:

• Serial starts with “OA.” A computer glitch at the factory released a batch of serial numbers starting with the letter O. According to Bradford White, those units were all built in January 1997. If you’ve got one, it’s well past retirement age.
• Tankless water heaters. Some Bradford White tankless units were built by other manufacturers (such as Rinnai), so their serial numbers may use that manufacturer’s date format instead. If your tankless serial doesn’t start with two letters, the maker’s own format is the place to look, or Bradford White can decode it for you.
• Oil-fired water heaters. These are rare in Florida, and Bradford White no longer makes them. Some older oil-fired units used a numeric date format with the year and month in the first four digits.
• Jetglas and other private labels. Bradford White has also sold tanks under names like Jetglas. These generally use the same letter codes.

Bradford White Warranty Check: Is Yours Still Covered?

Once you know the age, the next thing most people want to know is whether the warranty still applies. Here’s how Bradford White’s residential warranty works, in plain English:

• The model number tells you the warranty length. On most residential tanks, the number right after the capacity and tank style is the warranty in years. For example, a model ending in “T6N” carries a 6-year tank warranty, and one with a “10” in that spot carries 10 years. Bradford White’s tank warranties run 1, 6, 8, or 10 years depending on the model.
• The clock starts at installation. Bradford White’s warranty runs from the date of installation. If you can’t prove when it was installed, they use three months after the manufacture date instead. That’s another reason to hang onto your plumber’s invoice.
• Claims go through a plumber. Bradford White doesn’t sell water heaters directly to homeowners. They go through licensed plumbing professionals, so warranty claims do too. Your plumber diagnoses the problem and handles the claim through a Bradford White distributor.
• Replacement units inherit the remaining warranty. If a 10-year tank fails in year 9, the replacement is covered for the one year that was left, not a fresh 10.
• Parts are not labor. The warranty covers the tank and parts. Labor, haul-away, and code upgrades are usually on you.

To check your coverage directly, enter your serial number on Bradford White’s My Water Heater page or visit their Warranty Center. Or give us a call and we’ll look it up with you.

How Long Does a Bradford White Water Heater Last?

Bradford White builds a solid tank. It’s the brand a lot of plumbers put in their own homes. But no tank lasts forever. A typical Bradford White water heater lifespan is about 8 to 12 years for a standard gas or electric tank, and we’ve seen well-maintained units go longer. Tankless units generally last longer than tanks.

Here in Central Florida, a few local conditions push that number up or down:

• Hard water. Much of our region draws from the limestone Floridan Aquifer, so the water carries a lot of calcium and magnesium. That settles to the bottom of the tank as sediment, which makes the burner or elements work harder and speeds up wear. Homes on well water around Ocala and Marion County see this the most. A water softener helps a lot.
• Garage installs. Most Florida water heaters live in the garage. Heat and humidity are tough on connections, valves, and the outer jacket over time.
• Salt air. Closer to the coast, around Palm Bay and Brevard County, we see more corrosion on fittings and gas components.
• Maintenance (or the lack of it). Flushing the tank and checking the anode rod can add years. Most people never do either.

What Your Water Heater’s Age Means for You

A simple rule we give customers: if the repair costs more than half the price of a new water heater and the tank is past 8 years old, replacement is usually the better deal.

Signs Your Bradford White Is on Its Way Out

Age is the best predictor, but your water heater will usually give you some warning before it quits:

• Rumbling, popping, or crackling. That’s sediment at the bottom of the tank. Water trapped under the scale boils and pops. It’s the most common issue we see in Central Florida.
• Rusty or brown hot water. If only the hot side is discolored, the inside of the tank may be corroding.
• Rotten-egg smell. Usually a reaction between the anode rod and bacteria in the water. Sometimes fixable, but on an older tank it’s often a sign the anode is spent.
• Water around the base. If it’s coming from the tank itself (not a fitting or the relief valve line), there’s no repairing it. Shut off the water supply and call.
• Pilot keeps going out (gas units). On Bradford White gas tanks, a common culprit is lint and dust clogging the air intake screen at the bottom, which is common in garages near a dryer. Sometimes a cleaning fixes it; sometimes it’s a thermocouple or gas valve.
• Running out of hot water faster. On electric units, it’s often a burned-out element. On older tanks, sediment is taking up space and insulating the water from the heat.

How to Get More Years Out of Your Water Heater

• Flush it once a year. Hook a hose to the drain valve and run it until the water comes out clear. With Florida’s hard water, this makes a real difference.
• Check the anode rod every 3 to 4 years. It’s a sacrificial rod that corrodes so your tank doesn’t. When it’s eaten down, the tank starts going next.
• Keep the temperature around 120°F. Hotter settings speed up scale buildup and wear, and raise the risk of scalding.
• Keep the area around a gas tank clean. Sweep up lint and dust so the burner gets clean air.
• Test the relief valve yearly. Lift the lever briefly; water should flow and stop cleanly. If it drips afterward, get it replaced.

Bradford White Water Heater Age: Frequently Asked Questions

How do you determine the age of a Bradford White water heater?

Find the serial number on the rating label on the side of the tank. The first letter is the year of manufacture and the second letter is the month. Because the year letters repeat every 20 years, count the digits after the two letters: seven digits means it was made before December 2007, and eight digits means December 2007 or later.

How old is my Bradford White water heater if the serial starts with “S”?

An “S” means 1998 or 2018. If there are eight digits after the two letters, it’s 2018, which puts it at about 8 years old in 2026. If there are seven digits, it’s from 1998, and it’s well past time to replace it.

What’s the life expectancy of a Bradford White water heater?

Most Bradford White tank water heaters last about 8 to 12 years. Hard water, garage installs, and skipped maintenance shorten that; regular flushing, anode rod checks, and a water softener can stretch it. Tankless models generally last longer than tanks.

What is the most common problem with Bradford White water heaters?

In our experience, sediment buildup is number one, especially with Florida’s hard water. It causes rumbling noises, slower recovery, and eventually tank failure. On gas models, a pilot that won’t stay lit is also common and is often caused by lint or dust clogging the air intake screen at the bottom of the unit. On electric models, burned-out heating elements top the list.

What temperature should my Bradford White water heater be set at?

Around 120°F works well for most homes. It’s hot enough for showers and dishes, reduces the risk of scalding, and slows down mineral buildup inside the tank. If someone in the home needs a different setting for health reasons, talk to a plumber about adding a mixing valve.

Is there an official Bradford White serial number lookup?

Yes. Bradford White’s My Water Heater page lets you enter your serial number to see warranty information, and it includes their official date code chart. You can also use the free decoder at the top of this page to get the age instantly.

How do I check my Bradford White warranty?

Look at the model number first; the digit that follows the tank style usually tells you the warranty length (for example, “6” for six years). The warranty starts on the installation date, or three months after the manufacture date if you don’t have proof of installation. You can confirm coverage through Bradford White’s Warranty Center, and claims are filed through a licensed plumber.

Why doesn’t Bradford White just print the date on the label?

Plenty of manufacturers encode the date instead of printing it, mostly for production tracking. The upside is that once you know the letter code, you can read the age of any Bradford White tank in seconds, and the same approach works for many other brands. You can also check the age of a Whirlpool water heater with our guide.

Can I find my water heater’s age by serial number if the label is gone?

Not from the tank itself, but there are other ways. Check for the installer’s sticker, look up permits for your address on your county’s building department website, and dig through home inspection reports or closing paperwork. A plumber can also give you a good estimate based on the unit’s design and condition.

Should I replace my Bradford White water heater just because it’s old?

Not automatically, but age matters more than most people think. A tank that fails doesn’t just stop making hot water; it can leak continuously because it’s connected to your home’s water supply. If yours is past 10 to 12 years old, especially if it’s inside the house or in an attic, planning a replacement on your schedule is a lot cheaper than dealing with water damage.