Firman W01781 vs Yamaha EF2200iS
What is the difference?
The Firman W01781 has 1.7 kW of running power, 2.1 kW peak. The Yamaha EF2200iS has 1.8 kW of running power, 2.2 kW peak.
The Firman W01781 has a 0.9 gal tank, the Yamaha EF2200iS has a 1.2 gal tank.
The Firman W01781 weighs 46 lb, the Yamaha EF2200iS weighs 55 lb. The Firman W01781 is easier to carry.
Both have a 3-year warranty.
Specs side by side
| Firman W01781 | Yamaha EF2200iS | |
|---|---|---|
| Running W | 1700 | 1800 |
| Peak W | 2100 | 2200 |
| Fuel | gasoline | — |
| Tank (gal) | 0.9 | 1.2 |
| Run time @50 % (h) | 9 | — |
| Noise (dB) | 59 | — |
| CO shutoff | — | — |
| Weight (lb) | 46 | 55 |
| Warranty (yr) | 3 | 3 |
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Specs as read from manufacturer pages on 2026-10-30 / 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, Firman W01781 or Yamaha EF2200iS?
The Yamaha EF2200iS. More running watts: 1800 W vs 1700 W.
Which is lighter, Firman W01781 or Yamaha EF2200iS?
The Firman W01781. Lighter: 46 lb vs 55 lb.
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