Brands Generac

Inverter generator

Generac 2500i (82512)

A gas inverter generator rated at 2,200 running and 2,500 starting watts, with a 1-gallon tank and up to 4.5 hours of runtime at half load. It shuts itself off if carbon monoxide builds up.

Running watts
2,200 W
Starting / surge watts
2,500 W
Fuel
gasoline
Best for
Camping, tailgating and charging electronics, where light weight and low noise matter.
Not for
Central air, well pumps or 240V appliances. Buyers in California, as it is not CARB compliant.

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Specifications

Power
Running watts2,200 W
Starting / surge watts2,500 W
Fuelgasoline
Inverter (clean power)Yes
Runtime
Runtime at 50% load4.5 h
Fuel tank1 gal
Build
Weight48 lb
Length19.7 in
Width11.4 in
Height17.9 in
Safety & compliance
CO safety shutoffYes
CARB compliantNo

Checked 29 October 2026. Sources: generac.com.