Use the generator data label and serial-based support lookup. Capture model, serial, controller generation, kW rating and fuel type. Open the enclosure lid and read the data label, which lists the model number, the serial number and the kW rating that Generac support asks for.
What this covers
- Generac residential standby generators
What it does not cover
Try in this order
0 of 7 completedCapture the exact state
ReversiblePhotograph label and controller while safely non-running.
Separate the likely fault domains
ReversibleSeparate generator serial from transfer-switch and engine labels.
Correct only the proven, accessible condition
ReversibleUse the official serial lookup before an alarm procedure.
Photograph the data label while the unit is not running
ReversibleFind the data label on the generator enclosure or its frame and photograph the whole label. Do this with the unit switched off and not running, and keep clear of the exhaust and the transfer equipment.
Record the controller generation and the rating
ReversibleNote the controller type, the kW rating and the fuel type from the label and the front panel. The alarm procedure and the codes depend on the controller generation as well as the model.
Keep the generator's serial separate from the transfer switch's
ReversibleThe generator and the automatic transfer switch carry different labels and different serial numbers. Use the generator's own serial for a serial-based lookup and support request.
Verify once before going farther
ReversibleConfirm manual, controller and kW rating all match.
Generac
Where the data tag is for each Generac series
Generac lists a different tag location for each series, and some need a panel removed.
- Most models
- A fuel tag with the generator's serial number is on the rear exterior of the enclosure, near the fuel inlet pipe.
- Next Generation Series
- The serial number is listed in two places: a data label on the rear and a data label inside the enclosure, behind the front panel.
- Guardian Series air-cooled (2016 on)
- Unlock and lift the lid: the data tag is on the dividing panel to the left of the control panel.
- Commercial liquid-cooled (22 to 60 kW)
- Remove the side panel: the tag is inside the enclosure, to the right of the control panel.
- Protector Series (15 to 60 kW)
- Remove the side panel: the tag is inside the floor of the unit.
- Mobile Link
- With an active Mobile Link account, the serial number can be viewed in the app or on the Mobile Link website under Technical Specs.
Stop boundary
When this stops being a self-service repair
- !Keep hands out of the transfer equipment and do not open the enclosure while the generator is armed; read labels from outside only.
Evidence ledger
Sources behind this answer
Exact questions
Common questions about “Where to find a Generac standby-generator model and serial number”
Where is the serial number on a home standby generator?+
On the data label on the enclosure or frame, and in the controller's information screen on some models. It is different from the transfer switch's label.
Why does the controller generation matter?+
Different controllers use different alarm codes and reset procedures, so the correct steps depend on which one your unit has.
Can I look up my generator's age from the serial number?+
The maker's serial lookup usually shows the model and the date range.
Can I find the serial number without opening the generator?+
Often. Generac says most models have a fuel tag on the rear exterior near the fuel inlet pipe, and Mobile Link users can view it in the app.
Where is the tag on a Guardian?+
Generac says to unlock and lift the lid: the data tag is on the dividing panel to the left of the control panel.
Does the kW rating belong in the record?+
Yes. Rating, fuel type and model together identify the exact unit and the parts and service schedules that apply, so write all three down along with the serial number.