Comort Pack is manufactured by National Comfort Products. The second and third digits of the serial number are encoded to indicate the year of manufacture, based on the listing below:

32 = late 1998, 33 = 1999, 34 = 2000
35 = 2001, 36 = 2002, 43 = 2003
44 = 2005, 46 = 2006, 47 = 2007
48 = 2008, 49 = 2009, 50 = 2010
51 = 2011, 52 = 2012, 53 = 2013
54 = 2014, 55 = 2015, 56 = 2016
57 = 2017, 58 = 2018, 59 = 2019
60 = 2020, 61 = 2021, 62 = 2022
and so forth. So, for example, 34921174 would be 2009

    Also, for units built before 9/30/98, the second and third digits after the letter “B" are the actual year of manufacture. So, B96214128 is 1996. 

    For the age of another brand or manufacturer, go to our blog post How do I determine the age of my air conditioner?  And to determine the size of National Comfort units, go to What size in tons if my Comfort Pack air conditioner or heat pump? 

    And to figure out what all the other numbers listed on the condenser data plate mean, go to our blog post How do I understand the air conditioner or heat pump condenser label (data plate)?

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

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

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

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

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

• 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.