Brands DuroMax

Inverter generator

DuroMax XP13500iH

A dual-fuel inverter generator rated at 10,500 running and 13,500 starting watts, with an 8-gallon tank and up to 19.9 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 66 dB(A).

Running watts
10,500 W
Starting / surge watts
13,500 W
Fuel
gasoline, propane
Best for
Home backup through a transfer switch, including bigger loads, with clean power for electronics.
Not for
Carrying by hand: it weighs 234 lb. Buyers in California, as it is not CARB compliant.

Paid link: we may earn a commission if you buy through it, at no extra cost to you.

Specifications

Power
Running watts10,500 W
Starting / surge watts13,500 W
Fuelgasoline, propane
Inverter (clean power)Yes
Runtime
Runtime at 25% load19.9 h
Runtime at 50% load10.8 h
Fuel tank8 gal
Build
Noise66 dB(A)
Weight234 lb
Safety & compliance
CO safety shutoffYes
CARB compliantNo
EPA compliantYes
Standard warranty5 years

Checked 29 October 2026. Sources: duromaxpower.com.