Serial Number Age

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Tempstar Serial Number: How Old Is My Tempstar Furnace or AC?

In an ICP-family serial number (Heil, Tempstar, Comfortmaker, Arcoaire), the two digits after the first letter are the year and the next two are the week. Type the serial number below for the exact month and year.

Decode a Tempstar serial number

Type it exactly as printed. Spaces and dashes don't matter.

About Tempstar

Tempstar is an ICP brand, built alongside Heil and Comfortmaker, with the ICP serial code.

Same serial code: Heil, Comfortmaker, Arcoaire.

Where to find the serial number

FURNACEMODEL NO.SERIAL NO.E072514528
The serial number is usually labelled "Serial No." Example in the Tempstar format.

Furnace: Take off the front lower panel (turn the power off first). The data plate is a metal or foil sticker on the inside of the door or on the side of the cabinet, next to the blower. The serial number is usually labelled "Serial No.", "S/N" or "Ser. No."

Air conditioner: On the outdoor unit (the condenser), look for the data plate on the side panel, often near the electrical box where the power cables go in. The indoor coil or air handler has its own plate with a different serial number.

How to read a Tempstar serial number

In an ICP-family serial number (Heil, Tempstar, Comfortmaker, Arcoaire), the two digits after the first letter are the year and the next two are the week.

A letter, then 9 digits

L YY WW #####

  1. The letter is the factory.
  2. The next two digits are the year.
  3. The two after that are the week of the year.

Example: E072514528

Older ICP serials (before the late 1990s) use other codes that we do not decode yet.

How long does a furnace last?

Most furnaces last 15 to 20 years. Yearly servicing, the local climate and how hard it works all move it within that range. Past 15 years, it is worth getting a replacement price before the unit fails, so you aren't forced into a rushed decision.

Questions

How do I tell how old my Tempstar furnace is?

Find the serial number on the data plate and read it with the Tempstar code: In an ICP-family serial number (Heil, Tempstar, Comfortmaker, Arcoaire), the two digits after the first letter are the year and the next two are the week. Or type it into the decoder on this page.

Is the manufacture date printed on the label?

Often, yes, especially on newer units and water heaters. Look for "Mfg. date", "MFD" or "Date of manufacture". If there is a printed date, it is more reliable than decoding the serial number.

Who makes Tempstar?

Tempstar is made by ICP (Carrier). The same serial code is used by Heil, Comfortmaker, Arcoaire.

How sure are these dates? Based on a single published source. Treat the date as an estimate and check the label for a printed date. How we test the decoder.

Keeping an older furnace going