Where is the fan model number located?
Most cooling fans have a manufacturer label on the center hub, frame, motor housing, or cable side. Blowers and equipment-specific assemblies may also carry a second label on a bracket or wiring harness.
- Check the center label on both sides of the fan.
- Inspect the outer frame, motor housing, bracket, and cable tag.
- Review the equipment parts list, service manual, maintenance record, or previous invoice.
- Photograph the fan before disconnecting it so the connector orientation and wire positions remain documented.
Wait for the blades to stop and follow the equipment service procedure. Stored energy, hot components, moving machinery, and exposed mains wiring can create hazards.
How to identify the complete model
First identify the fan manufacturer, then look for a structured alphanumeric reference marked Model, Model No., Type, P/N, or Part No.. Preserve spaces, hyphens, suffixes, and revision characters.
The example below shows a common round hub label, with the model number shown as a prominent alphanumeric reference.
Round labels on the center hub are common, but layouts and field names vary by manufacturer. Electrical ratings help verify the reference but are not a substitute for it. If several codes look plausible, photograph the complete label instead of selecting one by guesswork.
Model number, serial number, and rating
| Label information | What it identifies | Useful for matching? |
|---|---|---|
| Manufacturer model | The fan series and specific version | Yes — primary identifier |
| Suffix or revision | Connector, wiring, speed, control, or construction variant | Yes — record it in full |
| Voltage and current | Rated electrical input | Yes — verification field |
| Serial or date code | One unit, batch, or production date | Usually not by itself |
| Equipment part number | A reference assigned by the equipment manufacturer | Sometimes, with documentation |
| Certification number | A safety or regulatory approval | Not as the fan model |
Once the reference is recorded, use the cooling fan model matching guide to compare it with a supplier reference. If the original is unavailable, continue with the replacement cooling fan guide.
Photos and details to provide
- Complete front and rear views
- Every label and printed marking
- Readable close-up of the model
- Connector face and locking features
- Wire colors and pin positions
- Mounting holes or brackets
- Frame dimensions and thickness
- Equipment nameplate
Use even lighting, keep the camera parallel to the label, avoid glare, and send the original-resolution images when possible.
Common identification mistakes
Omitting the suffix
Fans in one series can use different connectors, control signals, speeds, or current ratings.
Using only voltage and size
Those two fields do not confirm electrical or mechanical compatibility.
Copying a certification code
Approval, batch, and date codes are not necessarily searchable fan models.
Photographing only the equipment
The equipment nameplate may not identify the fan installed in a particular production batch.
Frequently asked questions
Can I identify a fan from the equipment model alone?
Sometimes a parts list or service manual identifies the installed fan, but one equipment model may use different fans across production batches. The original fan label is usually stronger evidence.
Is the voltage and size enough to identify the fan?
No. Fans with the same voltage and frame size can differ in thickness, current, speed, airflow, connector, pinout, feedback, PWM control, and mounting details.
What if the label is damaged or unreadable?
Provide clear photos of the complete fan, connector, wires, mounting arrangement, equipment nameplate, and any remaining markings. Measurements and service documentation may help narrow the options, but appearance alone may not confirm one exact model.