Carrier Heat Pump Age

[jevans (John Evans)]

Carrier Heat Pump air handler Serial # Q4A97057 Model # 40AQ036300BB Condo built 1984 or 85. Appears to be original, outside unit replaced in 1993.

[rray (Russel Ray)]

@jevans

Carrier Heat Pump air handler Serial # Q4A97057 Model # 40AQ036300BB Condo built 1984 or 85. Appears to be original, outside unit replaced in 1993.

The Q4 in the serial number indicates March (Q) 1984.