DuroMax XP13000HX vs Generac XT8500EFI
What is the difference?
The DuroMax XP13000HX has 10.5 kW of running power, 13 kW peak. The Generac XT8500EFI has 8.5 kW of running power, 10 kW peak.
The DuroMax XP13000HX is dual-fuel, the Generac XT8500EFI runs on gasoline.
The DuroMax XP13000HX runs 8.5 h at half load, the Generac XT8500EFI runs 9 h at half load. The Generac XT8500EFI runs longer on a tank.
The DuroMax XP13000HX has a 8.3 gal tank, the Generac XT8500EFI has a 8 gal tank.
The DuroMax XP13000HX weighs 246 lb, the Generac XT8500EFI weighs 214 lb. The Generac XT8500EFI is easier to carry.
The DuroMax XP13000HX has a 5-year warranty, the Generac XT8500EFI has a 3-year warranty.
Both have 120/240 V AC output.
Specs side by side
| DuroMax XP13000HX | Generac XT8500EFI | |
|---|---|---|
| Running W | 10500 | 8500 |
| Peak W | 13000 | 10000 |
| Fuel | dual-fuel | gasoline |
| Tank (gal) | 8.3 | 8 |
| Run time @50 % (h) | 8.5 | 9 |
| Noise (dB) | 74 | — |
| CO shutoff | yes | yes |
| Weight (lb) | 246 | 214 |
| Warranty (yr) | 5 | 3 |
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Specs as read from manufacturer pages on 2026-10-26 / 2026-10-31. 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, DuroMax XP13000HX or Generac XT8500EFI?
The DuroMax XP13000HX. More running watts: 10500 W vs 8500 W.
Which is lighter, DuroMax XP13000HX or Generac XT8500EFI?
The Generac XT8500EFI. Lighter: 214 lb vs 246 lb.
Which has the longer warranty, DuroMax XP13000HX or Generac XT8500EFI?
The DuroMax XP13000HX. Longer warranty: 5 years vs 3 years.
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Compare other models → · All DuroMax models · All Generac models