Step 4 · Verify Age and Plan Accordingly
After successfully decoding the serial number, you know the manufacturing date of your water heater. The average lifespan of a tank-style water heater is about 8 to 12 years. Compare your unit's age to this range. If your water heater is over 10 years old, it is living on borrowed time. You should begin researching and budgeting for a replacement. Proactively replacing an old unit can save you from the emergency expense and extensive water damage that can result from a tank failure.
Tools and Materials
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