DuroMax XP13000HX Dual Fuel with CO Alert vs Generac GP8000E COsense
The DuroMax XP13000HX Dual Fuel with CO Alert is the more powerful unit: 10,500 running watts against 8,000 — about 24% more capacity for the DuroMax XP13000HX Dual Fuel with CO Alert. The DuroMax XP13000HX Dual Fuel with CO Alert offers more fuel flexibility (gasoline, propane) where the Generac GP8000E COsense runs on gasoline. The Generac GP8000E COsense runs longer at half load — 10 hours on its 7.9-gallon tank vs 8.5 hours.
| DuroMax XP13000HX Dual Fuel with CO Alert | Generac GP8000E COsense | |
|---|---|---|
| Type | portable | portable |
| Fuel | gasoline, propane | gasoline |
| Running watts (gas / LP for standby) | 10500 W | 8000 W |
| Starting watts (gas) | 13000 W | 10000 W |
| Noise level | 74 dBA | — |
| Runtime at 50% load (gas) | 8.5 h | 10 h |
| Fuel tank | 8.3 gal | 7.9 gal |
| Output voltage | 120/240V | 120/240V |
| Transfer-switch-ready outlet | — | 30 A |
| Start type | electric | electric |
| CO safety shutoff | Yes | Yes |
| Engine displacement | 500 cc | 420 cc |
| Weight | 240 lb | 198 lb |
Frequently asked questions
Which is more powerful, the DuroMax XP13000HX Dual Fuel with CO Alert or the Generac GP8000E COsense?
The DuroMax XP13000HX Dual Fuel with CO Alert, at 10,500 running watts on its best fuel versus 8,000 W. Remember that dual-fuel and natural-gas ratings are lower than gasoline ratings — the comparison table shows the published per-fuel figures.
Which costs less to run, the DuroMax XP13000HX Dual Fuel with CO Alert or the Generac GP8000E COsense?
Estimated fuel for 24 hours at about 50% load: $75 on gasoline for the DuroMax XP13000HX Dual Fuel with CO Alert vs $61 on gasoline for the Generac GP8000E COsense, at national average prices. These are spec-sheet-derived estimates — the assumptions are on the methodology page, and different fuels make this a cost comparison, not an efficiency ranking.
Where do these specifications come from?
Every record on BackupAtlas is hand-curated from manufacturer documentation and spec sheets, and each generator page links to its source document.