How old is my Heil unit?
Heil is part of Carrier Global (ICP). 2 serial formats sourced across central air conditioner, heat pump, furnace, packaged unit.
Serial number decoder for Heil
Type the serial from the data plate, not the model number. Nothing is sent anywhere; the tables are in this page.
Format example: 4006A17330
- Heil air conditioner serial numbers in the 1980 to present format encode the year as digits 3-4 (2-digit year; century by context, 1980+) and the week as digits 1-2 (01-53) (source: building-center.org).
- Example: serial 4006A17330 decodes to week 40 of 2006.
- Heil air conditioner serial numbers in the before 1979 format encode the year as digit 1 = last digit of year; decade unknown (297448 = 1952, 1962 or 1972) (source: building-center.org).
- Example: serial 297448 decodes to 1952 or 1962 or 1972.
- The before 1979 format is ambiguous: 6-digit numeric; decade must come from ANSI date, model nomenclature, or purchase records.
- Heil's official lookup at heil-hvac.com returns warranty / registration lookup.
Decoder pages by product
Format eras
- 1980 to present VERIFIED
####A#####Central Air Conditioner, Heat Pump, Furnace, Packaged Unit - before 1979 VERIFIED
######Central Air Conditioner, Heat Pump, Furnace, Packaged Unit
Official lookup: the authority
Open the official Heil 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.
What we could not confirm
- ICP brand (icpusa.com/en/us/our-brands). Styles: E072514528 (ICP L-YY-WW), H55116328 (1980s H+Y+WW), H55120465 (recall re-serial), 297448 (pre-1980 6-digit). Registration page 200, no serial-lookup text.
