Determine the Age of your Heat Pump, AC, or Furnace

Determine the age of your Furnace, AC or Heat Pump (HVAC equipment)

This article is a quick reference guide for the most common manufacturers of heating and cooling equipment (or HVAC equipment).  Unfortunately most manufacturers of heating/cooling equipment do not clearly state the manufacture year on the data plate or label but luckily the year of manufacture is typically coded in the serial number.  By referencing the manufacturer below with the serial number the age of the equipment can be determined in most cases.

Manufacturers have been inconsistent over the years with their labeling which is why buyers should verify this information by following up with the manufacturer.  A lot of information can be included in the serial number including month of manufacture, day of manufacture, manufacture plant, type of unit and more.  When it comes to determining the life expectancy of a unit we are most interested in the year of manufacture which is the focus of this article.

See bottom of article for more information about Life Expectancy and Refrigerant Types.

Aire Flo

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for Aire Flo equipment is encoded in the the serial number.

77YYX77777  (3rd and 4th number)

American Standard

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for American Standard equipment is encoded in the the serial number.

Before 2000 —  letter than YY  
2000-2009 —– Y777XXX7X  (first number– decade needs to be assumed)
2010 and later —YY777XXXXX   (1st and 2nd number indicate the year)

XYY-77777  (Other styles– 1st and 2nd number indicate the year)
YY7777777
YYX-77777-77

2001 and earlier   Y7777XXXX  (1st letter indicates the production year)
E=1990  F=1991  G=1992  H=1993  J=1994  K=1995  L=1996  M=1997  N=1998  P=1999  R=2000  S=2002

Armstrong

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for Armstrong equipment is encoded in the the serial number.

77YYX77777  (3rd and 4th number)

Bosch

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for Bosch equipment is encoded in the the serial number.
The year should be verified.  The manufacturer has been inconsistent with labeling.

7777- Y77 -777777-X777XX7777   (1st number after dash indicates the year, decade needs to be assumed)

Bryant

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for Bryant equipment is encoded in the the serial number.

90s and later:     77YYX77777  (3rd and 4th number)
1980s (Old):    YY7777777   (1st and 2nd number)

Carrier

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for Carrier equipment is encoded in the the serial number.

77YYX77777   (3rd and 4th number indicates year)

Champion

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for Champion equipment is encoded in the the serial number.

XYY777777    (1st and 2nd number indicates the year of manufacture)

XYXY777777  (1st and 2nd number indicates the year of manufacture)

First Co

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for First Co equipment is encoded in the the serial number.

Date of manufacture is often listed on label

2001 and earlier   Y7777XXXX  (1st letter indicates the production year)
A= 1994/2017  B=1995/2018  C=1996/2019  D=1997/2020  E=1998/2021  F=1999/2022  G=2000/2023  H=2001/2024  J=2002/2025  K=2003/2026  L=2004/2027  M=2005  N=2006  P=2007  R=2008  S=2009  T=2010  U=2011  V=2012  W=2013  X=2014  Y=2015  Z=2016

Fujitsu

To determine the year of manufacture for Fujitsu equipment the company must be called with the serial number.  888-888-3424

Goodman

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for Goodman equipment is encoded in the the serial number.

YYXX777777   (1st and 2nd number indicates the year of manufacture)

Intertherm

Y=year of manufacturer  X=letter  7=numbers
The year of manufacturer is encoded in the the serial number.

X7XYY77-77777  (2nd and 3rd number indicates the year of manufacture)

Lennox

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for Lennox equipment is encoded in the the serial number.

77YYX77777    (The 3rd and 4th number indicates the year of manufacture — after 1992)

Mitsubishi

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for Mitsubishi equipment is encoded in the the serial number.

Y7X77777X    (The 1st number indicates the year, the decade must be assumed)

Payne

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for Payne equipment is encoded in the the serial number.

YY77X77777  (The 1st and 2nd numbers indicate the year of manufacture)

1980s  77YYX77777 (Older – the 3rd and 4th numbers indicate year of manufacture)

Rheem/Ruud

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for Rheem or Ruud equipment is encoded in the the serial number.

X77YY77777  (The 3rd and 4th number indicate the year of manufacture)

Older  XX7X777X77YY77777

Rinnai (HVAC)

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for Rinnai equipment is encoded in the the serial number.

YY77777777  (1st and 2nd number indicate the year of manufacture)

Thermo Pride

Call the manufacturer with serial number to determine the year of manufacture– 800 476 4328

Trane

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for Trane equipment is encoded in the the serial number.

Date of manufacture is often listed on label

2010 and later  YY777XXXX  or YY7777777X  (1st and 2nd numbers indicate year of manufacture)
2002-2009    Y7777X77X  (1st number indicates year of manufacture, decade must be assumed)

2001 and earlier   Y7777XXXX  (1st letter indicates the production year)
E=1990  F=1991  G=1992  H=1993  J=1994  K=1995  L=1996  M=1997  N=1998  P=1999  R=2000  S=2002

York

Y=year of manufacturer  X=letter  7=numbers
The year of manufacture for York equipment is encoded in the the serial number.

2004 and later   XYXY777777  (1st and 2nd numbers indicate year of manufacture)

before 2004      XXYX777777  (3rd letter indicates year of manufacture)
A=1992  B=1993  C=1994  D=1995  E=1996  F=1997  G=1998  H=1999  J=2000  K=2001  L=2002  M=2003  N=2004

Life Expectancy of Heat pumps and Air Conditioners:

Heat pumps and AC’s typically have a 15-20 year service life expectancy depending on model, manufacturer, installation, and luck.  Air conditioners in hot or coastal regions tend to last only 8-12 years.  The life expectancy also depends on the brand/quality, location, maintenance and the type of refrigerant.

R22 vs R410A Refrigerant

Heat pumps and Air Conditioners use refrigerant to create heat differential efficiencies.  Units with R-22 refrigerant have been phased out and are no longer manufactured.  Today heat pumps are manufactured using newer R410A refrigerant.  When a homeowner has a heat pump that uses R22 refrigerant they should budget to replace the unit as it can fail at any time.

What kind of refrigerant does my Heat Pump or Air conditioner use?

The type of refrigerant can typically be found on the data plate of the outdoor condenser or AC unit- listed on the label as R22 or HCFC-22 or R410A.  The Trane condenser below was built in 2005 and uses R22 refrigerant (the older type).  The owner should budget to replace this unit as it could fail at any time.

trane condenser data plate hvac r22 refrigerant
This Trane model uses R22 refrigerant – the older type

Life Expectancy of Furnaces:

Furnaces can last 20-25 years.  Keep in mind furnaces can continue to heat a home long after the heat exchanger has become cracked or corroded.  Damaged heat exchangers are dangerous, less efficient and can release unhealthy levels carbon monoxide into the living areas of the home.  Heat exchangers should be inspected every year after 15 years.  The life expectancy also depends on the brand/quality, location, maintenance and the type of refrigerant.

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