Generac XT8500EFI vs Westinghouse WGen9500DFc
What is the difference?
The Generac XT8500EFI has 8.5 kW of running power, 10 kW peak. The Westinghouse WGen9500DFc has 9.5 kW of running power, 12.5 kW peak.
The Generac XT8500EFI runs on gasoline, the Westinghouse WGen9500DFc is dual-fuel.
The Generac XT8500EFI runs 9 h at half load, the Westinghouse WGen9500DFc runs 8 h at half load. The Generac XT8500EFI runs longer on a tank.
The Generac XT8500EFI has a 8 gal tank, the Westinghouse WGen9500DFc has a 6.6 gal tank.
The Generac XT8500EFI weighs 214 lb, the Westinghouse WGen9500DFc weighs 211 lb.
Both have a 3-year warranty.
Both have 120/240 V AC output.
Specs side by side
| Generac XT8500EFI | Westinghouse WGen9500DFc | |
|---|---|---|
| Running W | 8500 | 9500 |
| Peak W | 10000 | 12500 |
| Fuel | gasoline | dual-fuel |
| Tank (gal) | 8 | 6.6 |
| Run time @50 % (h) | 9 | 8 |
| Noise (dB) | — | 74 |
| CO shutoff | yes | yes |
| Weight (lb) | 214 | 211 |
| Warranty (yr) | 3 | 3 |
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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, Generac XT8500EFI or Westinghouse WGen9500DFc?
The Westinghouse WGen9500DFc. More running watts: 9500 W vs 8500 W.
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Compare other models → · All Generac models · All Westinghouse models