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How can I tell age of Westinghouse water heater from serial number?
Friday, May 22, 2020
The 5th and 6th digits of the serial number are the year of manufacture of a Westinghouse water heater. First two digits are the month, and 3rd and 4th are the day. So 021518H2008455 indicates the water heater was manufactured on February 15, 2018. Newer units also have the date listed near the serial number and, in the example shown below, there is a minor 2-day difference between the them.
To determine the age of another manufacturer/brand of water heater, go to How do I determine the age of my water heater? Also, see our blog posts How can I determine the age of a water heater if the serial number is missing or decoding it is impossible? and What are the most common installation mistakes with water heater replacement? and Are water heaters required to be raised off the floor? and What's that powdery crust on the pipe connections at the water heater?
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Field Guide for Home Inspectors, a quick reference for finding the age of 154 brands of HVAC systems, water heaters, and electrical panels, plus 210 code standards for site-built and manufactured homes, and the life expectancy rating of 195 home components. Available at amazon.com for $19.95.
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