DuroMax XP15500HX
A dual-fuel portable generator rated at 12,000 running and 15,500 starting watts, with an 11.9-gallon tank and up to 15.8 hours of runtime at 25% load. It shuts itself off if carbon monoxide builds up and has 120/240V output for a transfer switch. DuroMax rates it at 77 dB(A).
- Running watts
- 12,000 W
- Starting / surge watts
- 15,500 W
- Fuel
- gasoline, propane
- Best for
- Heavy home backup through a transfer switch, including 240V loads like a well pump.
- Not for
- Quiet campgrounds and RV parks, since it is an open-frame, non-inverter design. Carrying by hand: it weighs 269 lb. Buyers in California, as it is not CARB compliant.
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Specifications
| Running watts | 12,000 W |
|---|---|
| Starting / surge watts | 15,500 W |
| Fuel | gasoline, propane |
| Inverter (clean power) | No |
| Runtime at 25% load | 15.8 h |
|---|---|
| Runtime at 50% load | 10.5 h |
| Fuel tank | 11.9 gal |
| Outlets | 4x 120V 5-20R, 120/240V L14-30R, 2x 120/240V 14-50R |
|---|---|
| Transfer-switch ready | Yes |
| Noise | 77 dB(A) |
|---|---|
| Weight | 269 lb |
| CO safety shutoff | Yes |
|---|---|
| CARB compliant | No |
| EPA compliant | Yes |
| Standard warranty | 5 years |
Checked 29 October 2026. Sources: duromaxpower.com.