Serial Number Age

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

In a Nordyne-family serial number, the two digits after the first three letters are the year and the next two are the month. Type the serial number below for the exact month and year.

Decode a Nordyne serial number

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

About Nordyne

Nordyne (now Nortek Global HVAC) makes equipment under many names, including Intertherm, Miller, Frigidaire, Tappan, Westinghouse, Maytag and Broan heating and cooling. Many are in manufactured homes.

Same serial code: Intertherm, Miller.

By type: Nordyne furnace age

Where to find the serial number

FURNACEMODEL NO.SERIAL NO.GBB030708229
The serial number is usually labelled "Serial No." Example in the Nordyne 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 Nordyne serial number

In a Nordyne-family serial number, the two digits after the first three letters are the year and the next two are the month.

3 letters, then numbers

LLL YY MM #####

  1. Skip the 3 letters at the start.
  2. The next two digits are the year, then two digits for the month.

Example: GBB030708229

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 Nordyne furnace is?

Find the serial number on the data plate and read it with the Nordyne code: In a Nordyne-family serial number, the two digits after the first three letters are the year and the next two are the month. 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 Nordyne?

Nordyne is made by Nortek Global HVAC. The same serial code is used by Intertherm, Miller.

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