How to Read a Water Heater Data Plate and Determine Its Age

If you’ve ever looked at your water heater and wondered, “How old is this thing?” — you’re not alone.

Many homeowners expect to find a clear manufacturing date printed on the label, but that’s not always the case. During inspections, one of the most common questions we get at P&D Home Inspection LLC is how to determine the age of a water heater from the data plate.

🔎 Inspect & Detect Tip:

The answer is usually hidden in the serial number.

Understanding the Water Heater Data Plate

The data plate on a water heater contains important information including:

• Manufacturer

• Model number

• Serial number

• Tank capacity

• Fuel type

• BTU input

• Pressure ratings

What many homeowners don’t realize is that manufacturers often encode the manufacturing date inside the serial number.

Example: Bradford White Water Heater

Water Heater Data plate

In the photo above, the manufacturer is Bradford White.

The serial number shown is:

CB7385199

For Bradford White water heaters:

• The first letter indicates the year

• The second letter indicates the month

In this example:

• C = 2007 or 2027

• B = February

Based on the model style and installation age, this unit was manufactured in February 2007.

Why Water Heater Age Matters

Knowing the age of your water heater helps you:

• Budget for replacement

• Monitor for leaks or corrosion

• Evaluate efficiency

• Avoid unexpected failures

Most standard tank-style water heaters last approximately 8–12 years, depending on maintenance, water quality, and usage.

Inspect & Detect with P&D Home Inspection LLC

At P&D Home Inspection LLC, we inspect and document the visible condition and approximate age of major systems so buyers and homeowners can make informed decisions.

🔎 We Inspect. We Detect. You Buy With Confidence.