How do I determine the age of my air conditioner?

Friday, December 13, 2019

The date of manufacture is encoded in serial number on the data plate of almost all air conditioners. Go to the outside unit (condenser) and look for the metal plate or sticker on the side with the manufacturer’s data. Each manufacturer has their own system. Sometimes it’s the first two numbers, or second two numbers, or second and fourth, or even a letter code. Find your brand in the list below and click on it to go to the page with specific instructions for determining when your unit was produced, with actual data plate examples.

Affinity   Aire-Flo   Airquest    Amana

American Standard   Ameristar 

Arcoaire.  Armstrong.  Aspen   Bard

Bryant   CAC/BDP   Carrier

Comfortmaker   Cumberland   Daikin

Ducane   EcoTemp   Fedders

FHP (Florida Heat Pump)   Friedrich

Frigidaire   General Electric (GE)   

Goodman    Grandaire   Guardian   Heil

International Comfort Products (ICP) 

Inter-City Products   Janitrol   KeepRite

Kelvinator   Kenmore   Lennox

Luxaire   Magic Chef   Miller

Mitsubishi   Nordyne   Nortek

Payne   RADCO   Stylecrest Revolv

Rheem   Ruud    Sears Kenmore

Singer   Tempstar   Thermal Zone

Trane  Unitary Products   WeatherKing

Westinghouse   Xenon   York

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

    To determine other key specs of your HVAC system, see one of these other blog posts: 

How can I find out the SEER of my air conditioner?

How can I tell whether the condenser (outdoor unit) is an air conditioner or heat pump? 

How can I find out the size of my air conditioner? 

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 

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

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

How can I find out the size of my air conditioner? 

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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