How can I tell the age of a Concord heat pump or air conditioner from the serial number?

Thursday, April 23, 2020

If there is a single letter in the middle of the serial number, then the 3rd and 4th digits are the year of manufacture. So, for example, 1617C11520 was produced in 2017. 

    When there is not a letter in the serial number, then the last two digits at the end of the number are the year, and 0324710591 would mean 1991.

    For the age of another brand or manufacturer, go to our blog post How do I determine the age of my air conditioner?

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  To learn more about heating and air conditioning systems, see these other blog posts: 

My air conditioner won't turn on. What's wrong? 

 Where is the air filter for my central air conditioner and furnace? I can’t find it? 

Does an old air conditioner use more electricity as it ages? 

How did homes stay cool in Florida before air conditioning? 

What is wrong with an air conditioner when the air flow out of the vents is low?

Why has the thermostat screen gone blank? 

Why does it take so long to cool a house when an air conditioner has been off for a while? 

Why is my air conditioner not cooling enough? 

What are the most common problems with wall/window air conditioners?  

Will closing doors reduce my heating and cooling costs? 

   Visit our HEATING AND AIR CONDITIONING page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles. 

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