Dual fuel generators can use two different types of fuel at the same time to generate power. In contrast, single fuel generators use only one type of fuel at a time. Dual fuel generators are efficient, eco-friendly and run with minimum interruptions. Within Westinghouse Portable Generators, we carry 8 single fuel and 6 dual fuel options. Check out our most reviewed product, the WGen7500c 9,500/7,500-Watt Gas Powered Portable Generator with Remote Start, Transfer Switch Outlet and CO Sensor.