Generac XT8500EFI vs WEN DF1100T
What is the difference?
The Generac XT8500EFI has 8.5 kW of running power, 10 kW peak. The WEN DF1100T has 8.3 kW of running power, 11 kW peak.
The Generac XT8500EFI runs on gasoline, the WEN DF1100T is dual-fuel.
The Generac XT8500EFI runs 9 h at half load, the WEN DF1100T runs 8.5 h at half load. The Generac XT8500EFI runs longer on a tank.
The Generac XT8500EFI has a 8 gal tank, the WEN DF1100T has a 6.6 gal tank.
The Generac XT8500EFI has a 3-year warranty, the WEN DF1100T has a 2-year warranty.
Both have 120/240 V AC output.
Specs side by side
| Generac XT8500EFI | WEN DF1100T | |
|---|---|---|
| Running W | 8500 | 8300 |
| Peak W | 10000 | 11000 |
| Fuel | gasoline | dual-fuel |
| Tank (gal) | 8 | 6.6 |
| Run time @50 % (h) | 9 | 8.5 |
| Noise (dB) | — | — |
| CO shutoff | yes | — |
| Weight (lb) | 214 | — |
| Warranty (yr) | 3 | 2 |
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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 the longer warranty, Generac XT8500EFI or WEN DF1100T?
The Generac XT8500EFI. Longer warranty: 3 years vs 2 years.
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