How old is my MrCool heat pump?

Serial number age decoder for MrCool heat pumps: 2 format eras, the decode rule in plain English, transcribed tables, and the official lookup.

• MrCool heat pump serial numbers in the era not stated format encode the year as digits 3-4 (YY) -> 2020 and the week as digits 1-2 -> week 19 (source: building-center.org).
• Example: serial 1920K08283 decodes to week 19 of 2020.
• MrCool heat pump serial numbers in the 2010 to present format encode the year as position 12 = last digit of year, 2010s presumed (6 = 2016) and the month as position 13 (1-9, A = Oct, B = Nov, C = Dec); day as positions 14-15 (source: building-center.org).
• Example: serial 2402135890267230130069 decodes to 2016 or 2026 (July).
• The 2010 to present format is ambiguous: Decade presumed 2010s by the source; a 2020s unit would read the same. Second example 240253122046A200150045 = 6,A,20 = 20 Oct 2016. Conflicts with the Midea (YY at 12-13) and Senville (YY at 17-18) readings of the same 22-digit shape.
• MrCool's official lookup at mrcool.com returns warranty / registration lookup.

Format eras

• 2010 to present VERIFIED
  ######################position 12 = last digit of year, 2010s presumed (6 = 2016)
• era not stated PARTIAL
  ####A#####digits 3-4 (YY) -> 2020

How to read the serial

2010 to present formatVERIFIED

Shape ###################### · example 2402135890267230130069 · confidence medium

Year

position 12 = last digit of year, 2010s presumed (6 = 2016)

Week or month

month = position 13 (1-9, A = Oct, B = Nov, C = Dec); day = positions 14-15

Example: serial 2402135890267230130069 decodes to 2016 or 2026 (July).

era not stated formatPARTIAL

Shape ####A##### · example 1920K08283 · confidence low

Year

digits 3-4 (YY) -> 2020

Week or month

week = digits 1-2 -> week 19

Plant

letter at position 5 (unpublished)

Example: serial 1920K08283 decodes to week 19 of 2020.

Where the data plate is on a heat pump

On the outdoor unit, same place as a condenser: a plate on the side or back of the cabinet near the line set. The indoor air handler carries its own plate with its own serial.

General guidance, not brand-specific: the owner's manual or the installer can point to the exact spot. See the data plate guide.

For scale only: the InterNACHI Standard Estimated Life Expectancy Chart for Homes lists Heat Pump at 10 to 15 years of expected service (nachi.org). That chart is a guideline, not a prediction for your unit.

What we could not confirm

• The era not stated format is only partially confirmed (PARTIAL (source flags unconfirmed)).
• Style 1 (ducted/central, plate 'HVAC Distributing LLC'): WW YY letter ##### - same shape as Carrier/ICP style 1; building-center flags it as unconfirmed. Style 2: 22-digit Midea barcode serial, positions 12-15 = Y M DD ('SEE THE BAR CODE FOR THE PRODUCED DATE' is printed on the plate). mrcool.com/warranty-registration = 200 (registration).

Sources

• https://www.building-center.org/mrcool-hvac-age/
• img: MRCOOL-style-1.jpg (plate photo)
• img: MRCOOL-style-2.jpg (plate photo)
• https://www.mrcool.com/warranty-registrationofficial

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