Generac 2500i vs Yamaha EF2200iS
What is the difference?
The Generac 2500i has 2.2 kW of running power, 2.5 kW peak. The Yamaha EF2200iS has 1.8 kW of running power, 2.2 kW peak.
The Generac 2500i has a 1 gal tank, the Yamaha EF2200iS has a 1.2 gal tank.
The Generac 2500i weighs 49 lb, the Yamaha EF2200iS weighs 55 lb. The Generac 2500i is easier to carry.
Specs side by side
| Generac 2500i | Yamaha EF2200iS | |
|---|---|---|
| Running W | 2200 | 1800 |
| Peak W | 2500 | 2200 |
| Fuel | — | — |
| Tank (gal) | 1 | 1.2 |
| Run time @50 % (h) | 4.5 | — |
| Noise (dB) | — | — |
| CO shutoff | yes | — |
| Weight (lb) | 49 | 55 |
| Warranty (yr) | — | 3 |
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Specs as read from manufacturer pages on 2026-10-26 / 2026-10-25. Specs one maker does not list are left out of the comparison. Sponsored links; we may earn a commission.
Common questions
Which has more running watts, Generac 2500i or Yamaha EF2200iS?
The Generac 2500i. More running watts: 2200 W vs 1800 W.
Which is lighter, Generac 2500i or Yamaha EF2200iS?
The Generac 2500i. Lighter: 49 lb vs 55 lb.
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