Firman T04073 vs WEN GN5602X
What is the difference?
The Firman T04073 has 4 kW of running power, 5 kW peak. The WEN GN5602X has 4.5 kW of running power, 5.6 kW peak.
The Firman T04073 is tri-fuel, the WEN GN5602X runs on gasoline.
The Firman T04073 runs 14 h at half load, the WEN GN5602X runs 12.5 h at half load. The Firman T04073 runs longer on a tank.
The Firman T04073 has a 5 gal tank, the WEN GN5602X has a 4.3 gal tank.
The Firman T04073 has 120/240 V AC output, the WEN GN5602X 120 V. Only 240 V output can run 240 V loads such as many well pumps, dryers and central AC.
Specs side by side
| Firman T04073 | WEN GN5602X | |
|---|---|---|
| Running W | 4000 | 4500 |
| Peak W | 5000 | 5600 |
| Fuel | tri-fuel | gasoline |
| Tank (gal) | 5 | 4.3 |
| Run time @50 % (h) | 14 | 12.5 |
| Noise (dB) | — | — |
| CO shutoff | yes | yes |
| Weight (lb) | — | — |
| Warranty (yr) | — | 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 T04073 or WEN GN5602X?
The WEN GN5602X. More running watts: 4500 W vs 4000 W.