How old is my intertherm furnace?

Using the fourth, fifth, sixth and seventh digits of the serial number GT3050153269 you will find the year and month of manufacture. The fourth and fifth digits are the year of manufacture and the sixth and seventh digits are the month.Click to see full answer. Accordingly, how do I tell the age of my furnace?Pull off the removable door on the outside of your furnace; this is usually along the bottom of the front of the unit. Look at the interior of the metal door for a label or tag listing the furnace’s serial number. This may also show an actual manufacturer’s date, depending on the company that made the furnace.Also, how old is my Goodman furnace? How can I tell the age of a Goodman heat pump or air conditioner from the serial number? The first two digits of the serial number are the year of manufacture for a Goodman heat pump or air conditioner. In this regard, how do you tell the age of a nordyne furnace? The fourth and fifth characters in the serial number are the year of manufacture for a Nordyne system. So the serial number shown below on the data plate of a Nordyne package heat pump indicates that it was manufactured in 2015.What is the lifespan of a furnace?The average life expectancy of furnaces in homes today is between 16 and 20 years. If your furnace is close to this age or older, you should begin shopping. Shopping for a replacement furnace in an emergency does not allow time for you to make your best decision.

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