Generac iQ5200 vs GenMax GM5500i
What is the difference?
The Generac iQ5200 has 3.9 kW of running power, 5.2 kW peak. The GenMax GM5500i has 5 kW of running power, 5.5 kW peak.
The Generac iQ5200 is dual-fuel, the GenMax GM5500i runs on gasoline.
The Generac iQ5200 runs 9 h at half load, the GenMax GM5500i runs 8.5 h at half load. The Generac iQ5200 runs longer on a tank.
The Generac iQ5200 has a 3.2 gal tank, the GenMax GM5500i has a 3.6 gal tank.
Specs side by side
| Generac iQ5200 | GenMax GM5500i | |
|---|---|---|
| Running W | 3900 | 5000 |
| Peak W | 5200 | 5500 |
| Fuel | dual-fuel | gasoline |
| Tank (gal) | 3.2 | 3.6 |
| Run time @50 % (h) | 9 | 8.5 |
| Noise (dB) | — | — |
| CO shutoff | yes | — |
| Weight (lb) | 111 | — |
| Warranty (yr) | — | — |
| Check on Amazon → | Check on Amazon → |
Specs as read from manufacturer pages on 2026-10-25 / 2026-11-03. 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 iQ5200 or GenMax GM5500i?
The GenMax GM5500i. More running watts: 5000 W vs 3900 W.
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Compare other models → · All Generac models · All GenMax models