The DuroMax XP13000DX is the largest and most powerful CO Alert Dual Fuel portable generator in the DX series powered by the DuroMax 500cc OHV engine and can run on gas or propane. This generator is great for jobsites and is the PERFECT HOME POWER BACKUP solution that can run household essentials such as lights, appliances, and central AC system with ease during a blackout, storm, or emergency event.