Find the manufacture year of any Mitsubishi Electric mini-split or heat pump from the serial number.
Mini-SplitHeat PumpVRF SystemAir Handler
Enter Serial Number
How to decode the serial number
Mitsubishi Electric is the leading premium mini-split brand in the US. Their serial numbers encode the manufacture date in a consistent format across product lines.
2000 to Present
Characters 3–4 are the year, characters 5–6 are the month.
AU1701234567
Position
Meaning
Example
1–2
Plant code — Manufacturing plant (varies)
AU
3–4
Year — 2017
17
5–6
Month — January (01=Jan, 12=Dec)
01
7+
Sequence — Ignore
234567
Where to find the serial number
On Mitsubishi outdoor units, the data plate is on the rear or side panel.
On indoor air handlers (heads), the data plate is inside the front cover or on the back of the unit.
Some Mitsubishi units also print the manufacture date directly on the data plate.
Decoded examples
AU1701234567
→ January 2017
AU = plant, 17 = 2017, 01 = January
TH2308987654
→ August 2023
TH = plant, 23 = 2023, 08 = August
Life expectancy
Expected lifespan: 15–20 years. Mitsubishi Electric is the most respected premium mini-split brand with exceptional reliability.
Common questions
The serial number characters 3–4 are the year and characters 5–6 are the month. Example: AU1708 = August 2017.
Mitsubishi Electric mini-splits are rated for 15–20 years and often exceed that with proper maintenance. The Hyper-Heating INVERTER (H2i) systems are particularly durable.
No. Mitsubishi Electric and Mitsubishi Motors are both part of the Mitsubishi Group of companies but operate as completely separate entities. Mitsubishi Electric focuses on electronics, automation, and HVAC.