Champion 4000-Watt Dual Fuel Inverter Generator vs Champion 4000-Watt Inverter Generator

Both are 4000-watt Champion inverter generators with CO Shield, but the dual-fuel model (A) adds propane capability for longer runtime and fuel flexibility. The gasoline-only model (B) is slightly lighter and has a higher owner rating, but lacks the propane option. Choose A if you want the ability to run on propane for extended RV trips or as a backup fuel source; choose B if you'll only use gasoline and prefer the lighter weight and proven reliability. Reviewers praise both for quiet operation and easy starting, though some note the recoil start requires a firm pull.

• Choose the dual-fuel 4000-watt inverter if you need the option to run on propane for longer runtime or as a backup fuel.
• Choose the gasoline-only 4000-watt inverter if you'll only use gasoline and want a slightly lighter unit with a strong owner rating.