Frigidaire / Nordyne Serial Number Lookup
Find out exactly how old your Frigidaire / Nordyne furnace, air conditioner, or heat pump is — and what size it is — in about 30 seconds. Then see what it costs to replace it factory-direct.
Decode your Frigidaire / Nordyne in seconds
Frigidaire HVAC and its many rebadges (Maytag, Gibson, Tappan, Westinghouse, Philco, Kelvinator, Miller, Intertherm) are built by Nortek Global (formerly Nordyne). They share a week-year serial code.
Frigidaire / Nordyne serial number formats by era
HVAC makers change their date codes over the years. Match the start of your serial to the right row.
| Era | How the date is coded | Example |
|---|---|---|
| Modern | First two digits = week, next two = year (WWYY) | 3419… → week 34, 2019 |
Where to find the serial & model number
A metal or foil label on the side of the outdoor condenser or inside the furnace cabinet door.
Use the format table above to turn it into a manufacture date.
The model number tells you the size — see the tonnage guide below.
Over ~12–15 years old? Replacing usually beats repairing. We can price it.
Reading the Frigidaire / Nordyne model number (size)
Almost every HVAC brand hides the tonnage in the model number as a 2–3 digit BTU code. FSA1BE3M1S → 3-ton R-410A single-stage AC (letter-coded)
| Model code | Size | Cooling capacity |
|---|---|---|
| 018 | 1.5 ton | 18,000 BTU |
| 024 | 2 ton | 24,000 BTU |
| 030 | 2.5 ton | 30,000 BTU |
| 036 | 3 ton | 36,000 BTU |
| 042 | 3.5 ton | 42,000 BTU |
| 048 | 4 ton | 48,000 BTU |
| 060 | 5 ton | 60,000 BTU |
1 ton = 12,000 BTU/hr. Gas furnaces instead show input BTUs (e.g. 060 = 60,000 BTU input).
Frequently asked questions
How old is too old for a Frigidaire / Nordyne unit?
Can I just replace the Frigidaire / Nordyne unit myself and save?
My serial number doesn't match any format above.
Does the model number tell me efficiency too?
Need to replace your Frigidaire / Nordyne system? We're here to help.
Tell us about your system and a specialist will call you to get you the right replacement.
Want to talk now? Call (888) 762-1334 — 9 AM–7 PM ET, Monday–Saturday.