The year of manufacture for AO Smith water heaters is encoded in the serial number. The year of manufacture for American water heaters is encoded in the serial number.ĪO Smith How old is my AO Smith water heater? Typical Service Life of Components of the HomeĪmerican How old is my American water heater? How old are my Kitchen and Laundry Appliances? What is the best way to install or replace a water heater? Boilers, like Weil McLain, have a typical service life of between 20 and 25 years with regular maintenance. Their service life can be extended by replacing the heating elements and other components. Water Heaters typically have a 15-20 year life expectancy. What is the typical life expectancy of a water heater or boiler? The list includes major manufacturers of tankless water heaters, electric water heater tanks, heat pump water heaters, geothermal water heaters, natural gas water heaters, and propane water heaters. When determining a unit’s life expectancy, we are most interested in the year of manufacture, which is the focus of this article. A lot of information can be included in the serial number, including the month of manufacture, day of manufacture, manufacture plant, type of unit, and more. Manufacturers have been inconsistent with their labeling over the years, so buyers should verify this information by following up with the manufacturer. By referencing the manufacturer below with the serial number, the age of the equipment can be determined in most cases. Most manufacturers of water heaters do not clearly state the year of manufacture on the data plate or label however, the year of manufacture is typically coded in the serial number. This article is a quick reference guide for the most common manufacturers of water heaters (and boilers). Learn the age of your water heater or boiler with this guide.
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