How do I determine the age of a Weather King furnace?
There are two serial number formats for WeatherKing.For the first, look for the second cluster of digits in the serial number, and the 3rd and 4th number after the single letter is the year of manufacture.The upper right of the data plate shows the month and year of production.
Look for a single letter in the middle of the serial number, and the 3rd and 4th digits after it are the year of manufacture.
To determine the size in tons of your heat pump or air conditioner, go to our post How do I tell the age of another brand or manufacturer?
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