Mitsubishi HVAC age | Building Intelligence Center

Mitsubishi®

How to determine the date of production/manufacture or age of Mitsubishi® HVAC Systems.

Mitsubishi® HVAC equipment is an increasingly common manufacturer for Ductless "Mini-Split" air conditioner and heat pump systems. The year of manufacture can prove difficult to decode from the serial number.

The date of production/manufacture or age of Mitsubishi® HVAC equipment can be determined from the serial number located on the data plate.

Various serial number styles/formats have been encountered. The two styles we have listed will code the year of manufacture in the first digit. The decade must be assumed based on nearest ANSI code date or condition of the unit.

IF your serial number is not represented in our sample styles, you MUST contact the manufacturer for further assistance in determining the age of the unit!!!

Parent Company: Mitsubishi

Example serial number styles/formats found:

Style 1: 89D00488D

(Styel 1 second character may be number or letter)

Style 2: 8001637 T

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Style 1: 89D00488D

Year (fiscal) of manufacture can be determined by using the 1st numerical digit.

The 2nd character represents month of manufacture. (Oct., Nov., Dec. represented by X, Y, Z respectively)

The decade must be assumed based on nearest ANSI code date, condition of the unit, and/or refrigerant type used.

In this example, the unit was manufactured the 9th month of either 2008 or 2018

ADDITIONAL NOTES:

For this Mitsubishi style, the 2nd character of the serial number represents the month of manufacture. Numbers represent months 1 thru 9 while letters X, Y, Z will represent months 10 thru 12 respectively.

Information obtained from the manufacturer indicates Mitsubishi production fiscal year begins in April (4th month) and ends the following March (3rd month). As such, units manufactured during months 1 thru 3 will be designated under the previous year code in the serial number, but may have a differing build date indicating the actual year. See Image below:

Style 2: 8001637 T

Year of manufacture can be determined using the first digit of the serial number which indicates the last digit of the production year for units with serial numbers ending with the letter "T" ONLY.

The decade must be assumed based on nearest ANSI code date, condition of the unit, and/or refrigerant type used.

Page last updated: 22 April 2020

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