Water Heater Model Numbers & Rating Plates
Sometimes, finding your water heater model number can be tricky. But, all water heaters have a Rating Plate that lists important data such as the model and serial numbers, manufacturing company’s name, length of the warranty, the wattage of elements installed (on electric models), gallon capacity, input BTU rating (gas models), and more.
New Nobel brand or Fresh brand water heaters have an easy to understand rating plate. It includes the manufacture date, as well as information on the size and capacity.
On older models, you can determine the age of your unit by decoding the water heater serial number. Some manufacturers, including Nobel and Fresh, has made it easy by incorporating the month and year built into the first 4 digits of the serial number. Other manufacturers use different formats but in a similar fashion.