Generac 2500i
Generator. Specs from the manufacturer page (checked ).

The Generac GP2500i is a portable inverter generator rated at 2,200 running watts and 2,500 starting watts. Its fuel tank holds 1 gal (3.79 L), and the listed run time is 4.5 hours at 50% load. The fully enclosed design and Economy Mode are intended for quieter operation outdoors.
Key features
- 2,200 W running power and 2,500 W starting power
- TruePower Technology for clean power suited to sensitive electronics, tools and appliances
- COsense Technology: stops, alerts and protects against hazardous carbon monoxide
- Economy Mode adjusts engine speed to save fuel and reduce sound
- Recoil starting with integrated Off/Run/Choke knobs
- Parallel Ready: connect two units for twice the power
- Low-oil pressure shutdown, LED indicators for low oil, overload and ready-to-use, and USB ports for mobile devices
- 1 gal (3.79 L) fuel tank with 4.5 hr run time at 50% load
What it is for
- camping
- tailgating
- outdoor cookouts
Specifications
| Running watts | 2200 W |
|---|---|
| Peak / surge | 2500 W |
| Tank | 3.79 L (1.0 gal) |
| Run time at 50 % load | 4.5 h |
| CO shutoff | Yes |
| Weight | 22 kg (48.5 lb) |
| Dimensions | 50 × 29 × 45.5 cm (19.7 × 11.4 × 17.9 in) |
From the Generac page. Values the manufacturer does not publish are left out.
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Generac 2500i comparisons
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All 31 comparisons
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Connection and wiring
Follow the diagrams in the Generac manual. Connecting to a home panel needs a transfer switch or interlock and a licensed electrician.
Error codes and troubleshooting
We found no error-code table in this manual. Its troubleshooting section is the reference.
FAQ
How long does the Generac 2500i run on a tank?
The maker rates it at 4.5 hours at 50 % load (about 1,100 W) on a 1.0-gal tank. A light load such as a refrigerator and lights runs longer; a full load runs shorter.
Can the Generac 2500i start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 2500 W peak. That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.