Westinghouse®

How to determine the date of production/manufacture or age of Westinghouse® HVAC Systems.
The date of production/manufacture or age of Westinghouse® HVAC equipment can be determined from the serial number located on the data plate.

Parent Company:  Nortek (formerly Nordyne Manufacturing)

Sister or similar Brands Include:   AirBloc | AMBIRAD | Benson | Broan | Frigidaire | Gibson | Intertherm | Kelvinator | Manmouth | Maytag | Miller | Nordyne | Nutone | Philco | Reznor | Tappan | Ventrol | Westinghouse

Example serial number styles/formats found:

  • Style 1: FGA030310579
  • Style 2: F3891 4228
  • Style 3: G6R9905-05028
  • Style 4:  21584-97B
  • Style 5:  M38778
  • Style 6:  A16789

Style 1:  FGA030310579

Description: Twelve (12) character serial number.  Begins with three (3) letter digits followed by nine (9) numerical digits.
Year of manufacture is 4th & 5th numerical digits combined.
Month of manufacture is 6th & 7th numerical digits combined.

Style 2:   F3891 4228

Description: Nine (9) character serial number (does not count the space).  Begins with one (1) letter and ends with eight (8) numerical digits.
Year of manufacture is 3rd & 4th digits combined.

Style 3:   G6R9905-05028

Description:  Twelve (12) character serial number.  Begins with a single letter, followed by a single number, then another single letter and ends with four numerical digits, followed by a dash (-) and five numerical digits.
Year of manufacture is 4th & 5th digits of the serial number combined.
Month of manufacture is 6th & 7th digits of the serial number combined.

Style 4:  21584-97B

Description:  Nine (9) character serial number (includes the dash (-)) that begins with five (5) numerical digits followed by a dash (-), two more numerical digits and ends with a letter.
Year of manufacture 7th & 8th digits (1st two numbers following the dash) of the serial number combined.
Month of manufacture is the last or 9th digit of the serial number (See chart below).

Style 5: M38778  (Used exclusively from January 1980 through December 1984)

Description:  Six (6) character serial number.  Serial number begins with a letter followed by five (5) numbers.
Month of manufacture is 1st digit (letter) of the serial number.  (See chart below).
Year of manufacture 2nd digit (number) of the serial number.

Style 5: A16789  (Used exclusively from January 1970 through December 1979)

Description:  Six (6) character serial number.  Serial number begins with a letter followed by five (5) numbers.
Month of manufacture is 1st digit (letter) of the serial number.  (See chart below).
Year of manufacture 2nd digit (number) of the serial number.

Page last updated: 19 April 2016

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