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How old is my Amana PTAC unit?

Amana PTAC is part of Goodman/Daikin. 2 serial formats sourced across ptac.

Serial number decoder for Amana PTAC

Serial no.

Type the serial from the data plate, not the model number. Nothing is sent anywhere; the tables are in this page.

Format example: 0109145052

Amana PTAC PTAC serial numbers in the 1997 to present format encode the year as digits 1-2 (YY) -> 2001 and the month as digits 3-4 -> Sep (source: building-center.org).
Example: serial 0109145052 decodes to September 2001.
Amana PTAC PTAC serial numbers in the era not stated format encode the year as digits 1-2 (YY) and the month as digits 3-4 (source: building-center.org).
Example: serial 9704011000 decodes to April 1997.
Amana PTAC's official lookup at amana-ptac.com returns warranty / registration lookup.

Decoder pages by product

1997 to present VERIFIED
##########PTAC, Central Air Conditioner, Heat Pump, Furnace
era not stated PARTIAL
##########Central Air Conditioner, Heat Pump, Furnace, Packaged Unit

Official lookup: the authority

Open the official Amana PTAC lookup takes serial number; returns warranty / registration lookup; URL verified live

This site is a reference built from published tables. The manufacturer's own lookup wins whenever the two disagree.

The era not stated format is only partially confirmed (VERIFIED-partial).
Amana PTAC is treated as sharing Goodman's format because the source lists it in that family; the corporate relationship itself is an estimate.
Amana HVAC (incl. PTAC) uses the Goodman numeric YYMM###### style (0109145052 = Sep 2001, plate ANSI 1999). Older Daikin-built Amana/Goodman PTACs used the alpha style 5FU5472618P (year letter at position 3; see the Goodman PTAC rule in formats.json). building-center's Amana page text says 'month = 4th & 5th positions' but its chart shows 1-2 = YY and 3-4 = MM; 9-digit style 3 (040590391 = 2004, May) follows the same YYMM reading. amana-ptac.com/product-registration = 200; amana-hac.com warranty lookup was fetched by the parent session (sources/www_amana_hac_com_warranty_lookup.html).