Find the manufacture year of any Heil AC, heat pump, or furnace from the serial number.
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Enter Serial Number
How to decode the serial number
Heil is manufactured by International Comfort Products (ICP), a subsidiary of Carrier Global. Heil, Tempstar, Comfortmaker, Arcoaire, and Day & Night are all ICP brands using the same serial format.
2004 to Present
First two digits = year, next two = week.
1723A123456
Position
Meaning
Example
1–2
Year — 2017
17
3–4
Week — Week 23
23
5+
Sequence — Ignore
A123456
Where to find the serial number
Data plate on side panel of outdoor units or inside the furnace cabinet.
ICP brands all use the same YYWW format — year first, then week.
Decoded examples
2317A123456
→ Week 17, 2023
23 = 2023, 17 = week 17
1148B789012
→ Week 48, 2011
11 = 2011, 48 = week 48
Life expectancy
Expected lifespan: 15–18 years. Heil is a mid-tier ICP brand with solid reliability.
Common questions
Heil, Tempstar, Comfortmaker, Arcoaire, Day & Night, and Keeprite are all manufactured by International Comfort Products (ICP), a Carrier subsidiary. They use identical equipment with different branding.
The first two digits are the year and the next two are the week of manufacture. Example: 1934 = week 34 of 2019.