How old is my Frigidaire furnace?
Enter the serial number or take a photo of the label. The date comes from Frigidaire's documented serial rules; AI only helps read the label.
How to read a Frigidaire furnace serial number
Nordyne format on licensed brand names (about 1998 onward)
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
Turn the furnace off at its switch, then remove the upper access door (the burner or blower compartment). The rating plate is on the inside wall of the cabinet or on the back of the door.
The plate lists the model number and serial number; many newer plates also print a date of manufacture.
How long does a furnace last?
A typical furnace lasts about 15–20 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 NAHB / Bank of America, Study of Life Expectancy of Home Components (2007, archived copy), Carrier: how long does a furnace last? and Lennox: how long does a furnace last?.
Frigidaire furnace recalls
No Frigidaire furnace 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
- How can I tell how old my Frigidaire furnace is?
- Find the serial number on the rating plate and enter it above. We decode it using Frigidaire's documented serial-number format.
- Where is the serial number on a Frigidaire furnace?
- Turn the furnace off at its switch, then remove the upper access door (the burner or blower compartment). The rating plate is on the inside wall of the cabinet or on the back of the door. The plate lists the model number and serial number; many newer plates also print a date of manufacture.
- How long does a furnace usually last?
- A typical service life is about 15–20 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 Nordyne, Intertherm, Miller, Broan, NuTone, Medallion, GrandAire, Garrison, Gibson, Kelvinator, Philco, Tappan, Westinghouse and Maytag furnaces use the same serial format?
- Yes. Frigidaire, Nordyne, Intertherm, Miller, Broan, NuTone, Medallion, GrandAire, Garrison, 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.
Related
Same serial format: Nordyne furnace, Intertherm furnace, Miller furnace, Broan furnace, NuTone furnace, Medallion furnace, GrandAire furnace, Garrison furnace, Gibson furnace, Kelvinator furnace, Philco furnace, Tappan furnace, Westinghouse furnace, Maytag furnace
Other Frigidaire equipment: air conditioner, heat pump
Sources
- Nordyne warranty inquiry lookup (archived): Mfg. Date per serial, e.g. B6D130407356 = 4/10/2013
- Nortek Global HVAC literature library: “the 4th and 5th digits of your serial number indicate the year and the 6th and 7th digits indicate the month”
- Building-Intelligence Center: Nordyne HVAC age
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.