SerialAtlas
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HVAC date-code guide

Frigidaire HVAC serial number lookup

Frigidaire-branded HVAC systems have often been manufactured by Nordyne/Nortek and commonly use the shared year/month serial layout.

Parent
Nortek Global HVAC
Common code
A widely used style places a two-digit year in positions 4–5 and a two-digit month in positions 6–7.
Reviewed
August 8, 2026

Instant equipment lookup

Decode the manufacturing date

Runs on this device
Equipment type

Using A widely used style places a two-digit year in positions 4–5 and a two-digit month in positions 6–7.

Type exactly what is printed. Spaces and dashes are ignored.

Optional: add model number for capacity cluesAdd model

Model decoding is labeled as a clue unless the exact format is documented.

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EQUIPMENT DATA
MODEL24ABC636A003
SERIAL5019X30312
WeekYear

See exactly how the code was read

SerialAtlas highlights the date characters, names the matching rule, and shows alternative interpretations when the code is ambiguous.

  • Current age calculated automatically
  • Confidence and rule source shown
  • Optional model-capacity clue

Evidence-led route update

Frigidaire HVAC date-code evidence

If you need to estimate a Frigidaire HVAC unit’s manufacture age, verify the HVAC label rather than assuming an appliance serial format.

Keep HVAC Frigidaire separate from appliance serials

A widely used style places a two-digit year in positions 4–5 and a two-digit month in positions 6–7. Frigidaire HVAC is represented in the Nortek family by the verified year/month block in characters 4–7. That is different from unrelated Frigidaire appliance numbering. Frigidaire HVAC is represented by the Nortek family, where the verified year/month block sits in characters 4–7. The equipment category on the plate matters because unrelated Frigidaire appliances use different identification systems.

Worked example: GBB030708229

GBB030708229 — The verified decoder reads this fixture as July 2003. The date is a manufacture estimate, not an installation date.

When a Frigidaire label identifies another manufacturing family

A brand name alone cannot select an HVAC date rule. If the plate is not central HVAC or the serial does not fit the Nortek positions, use the full label and official support instead of adapting an appliance pattern.

Model number vs. serial number

Use the HVAC model for product-family and parts context; use the serial for age and provide both to Nortek support. Check the furnace, outdoor cabinet, air handler, or packaged-unit plate and retain the complete serial for an official confirmation.

Limits and official support

Frigidaire-branded equipment can come from different manufacturing families. If the result affects warranty, registration, parts, safety, or replacement decisions, use the complete model and serial with the manufacturer or a qualified professional. SerialAtlas is an independent reference, not an official warranty lookup or warranty coverage decision.

Open Frigidaire HVAC support route

How to read a Frigidaire HVAC serial number

A widely used style places a two-digit year in positions 4–5 and a two-digit month in positions 6–7. SerialAtlas removes spacing and punctuation, then applies only the documented rule families mapped to Frigidaire HVAC. The lookup remains in the browser.

Try this documented-style exampleGBB030708229Load example

Equipment covered

  • air conditioners
  • heat pumps
  • furnaces
  • air handlers
  • manufactured-home systems

Commercial, imported, very old, specialty, and private-label equipment can use a different code. Confirm the full rating plate before accepting a result.

Where to find the rating plate

  • Outdoor condenser or heat-pump cabinet, usually near the service valves
  • Inside the furnace or air-handler access panel
  • On the packaged-unit rating plate
  • Near the electrical disconnect or wiring diagram

Why more than one date can appear

Two-digit years and repeating letter cycles can point to more than one era. SerialAtlas ranks the plausible dates but keeps materially different alternatives visible. Label design, refrigerant, installation records, and product literature can resolve the era.

Source and verification

Inspector Handbook open reference data (CC BY 4.0). Independently implemented and reviewed August 8, 2026.

Open reference source

What this result does not prove

A manufacture date is not an installation date, warranty decision, recall match, condition assessment, or replacement recommendation. Confirm high-stakes decisions with the manufacturer or a qualified professional.