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Nordyne / Nortek family

How old is my Nordyne heat pump?

Enter the serial number or take a photo of the label. The date comes from Nordyne's documented serial rules; AI only helps read the label.

Look for “Serial No.” or “S/N” on the label. Spaces and dashes are fine.

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How to read a Nordyne heat pump serial number

Nordyne built the furnaces, air conditioners and heat pumps sold as Intertherm, Miller, Frigidaire, Maytag, Gibson, Westinghouse, Broan and more, and Rheem bought its parent, Nortek Global HVAC, in October 2024. Their 12-character serials put the year in the 4th and 5th characters and the month in the 6th and 7th: Nordyne’s own warranty lookup lists B6D130407356 as made on April 10, 2013.

  • Plant/product + year + month + sequence (about 1989 onward)

    Example: B6D130407356 (Nordyne) was made in April 2013. Nordyne serials are 12 characters: the 4th and 5th are the year and the 6th and 7th the month, so "13" is 2013 and "04" is April.

Not decoded yet: Rheem-built plates marked "Manufactured for Nordyne", older Frigidaire/Philco/Westinghouse serials ending in a year and month letter, 1970s Westinghouse serials, Mammoth and Reznor commercial units, and anything before these brands used the Nordyne format.

Where to find the serial number

The rating plate is on the outdoor unit, usually on the side or back of the cabinet near the electrical disconnect.

The indoor air handler has its own plate and its own serial number, so check which unit you're decoding.

How long does a heat pump last?

A typical heat pump lasts about 10–15 years. That's a general estimate: maintenance, usage, climate and installation all matter, and age alone doesn't tell you a unit's condition.

Range from InterNACHI: standard estimated life expectancy chart, Carrier: how long do heat pumps last? and Lennox: how long do heat pumps last?.

Nordyne heat pump recalls

No Nordyne heat pump recalls were found in U.S. Consumer Product Safety Commission data when this page was checked (2026-09-30). A decoded result checks your model number live.

Questions

Does this cover mobile and manufactured home furnaces?
Yes, for Intertherm, Miller, Broan and Medallion units with the 12-character serial. Nordyne’s 2006 bulletin to manufactured-housing distributors refers to products with “serial date codes of 0602 and after”, which is February 2006 in this format.
Why isn’t my older Frigidaire, Westinghouse or Maytag serial decoded?
Those names were on other companies’ equipment before Nordyne made it: we decode Frigidaire, Westinghouse, Gibson, Kelvinator, Philco and Tappan from about 1998 and Maytag from 2002. Older styles, such as serials ending in a year and a month letter, have conflicting sources, so we leave them undecoded.
Is a plate marked “Manufactured for Nordyne” decoded the same way?
Not necessarily. Some early units were built by Rheem and carry Rheem’s serial format instead, so we don’t read them with the Nordyne rule.
How can I tell how old my Nordyne heat pump is?
Find the serial number on the rating plate and enter it above. Nordyne heat pumps use the Nordyne / Nortek family serial format, which includes the manufacture date. For example, B6D130407356 was made in April 2013: Nordyne serials are 12 characters: the 4th and 5th are the year and the 6th and 7th the month, so "13" is 2013 and "04" is April.
Where is the serial number on a Nordyne heat pump?
The rating plate is on the outdoor unit, usually on the side or back of the cabinet near the electrical disconnect. The indoor air handler has its own plate and its own serial number, so check which unit you're decoding.
How long does a heat pump usually last?
A typical service life is about 10–15 years. That's a general estimate: maintenance, usage, climate and installation all matter, and age alone doesn't tell you a unit's condition.
Do Intertherm, Miller, Broan, NuTone, Medallion, GrandAire, Garrison, Frigidaire, Gibson, Kelvinator, Philco, Tappan, Westinghouse and Maytag heat pumps use the same serial format?
Yes. Nordyne, Intertherm, Miller, Broan, NuTone, Medallion, GrandAire, Garrison, Frigidaire, Gibson, Kelvinator, Philco, Tappan, Westinghouse and Maytag use the same serial-number conventions (Nordyne / Nortek family), so the same decoding rules apply.
How reliable is the result?
The Nordyne / Nortek family rules come from documented sources, but they're in Beta while we check more real-world examples, so results are capped at medium confidence. If a serial doesn't match a documented format, we say so instead of guessing.

Same serial format: Intertherm heat pump, Miller heat pump, Broan heat pump, NuTone heat pump, Medallion heat pump, GrandAire heat pump, Garrison heat pump, Frigidaire heat pump, Gibson heat pump, Kelvinator heat pump, Philco heat pump, Tappan heat pump, Westinghouse heat pump, Maytag heat pump

Other Nordyne equipment: furnace, air conditioner

Sources

Rules last reviewed 2026-09-30. These rules are in Beta while we verify more real-world examples, so results are capped at medium confidence.

Manufacture dates are decoded from manufacturer serial-number conventions and available documentation. Serial formats can change. Verify critical equipment information with the manufacturer when necessary.