Cummins Onan P4500i vs WEN GN5602X
What is the difference?
The Cummins Onan P4500i has 3.7 kW of running power, 4.5 kW peak. The WEN GN5602X has 4.5 kW of running power, 5.6 kW peak.
Both run on gasoline.
The Cummins Onan P4500i runs 15 h at half load, the WEN GN5602X runs 12.5 h at half load. The Cummins Onan P4500i runs longer on a tank.
The Cummins Onan P4500i has a 3.4 gal tank, the WEN GN5602X has a 4.3 gal tank.
Both have a 3-year warranty.
Both have 120 V AC output.
Specs side by side
| Cummins Onan P4500i | WEN GN5602X | |
|---|---|---|
| Running W | 3700 | 4500 |
| Peak W | 4500 | 5600 |
| Fuel | gasoline | gasoline |
| Tank (gal) | 3.4 | 4.3 |
| Run time @50 % (h) | 15 | 12.5 |
| Noise (dB) | — | — |
| CO shutoff | — | yes |
| Weight (lb) | 97 | — |
| Warranty (yr) | 3 | 3 |
| Check on Amazon → | Check on Amazon → |
Specs as read from manufacturer pages on 2026-10-31 / 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, Cummins Onan P4500i or WEN GN5602X?
The WEN GN5602X. More running watts: 4500 W vs 3700 W.
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