7 Best Function Generators 2025 in the US

1 Our Pick
Westinghouse 5000 Peak Watt Quiet Portable Inverter Generator with Remote Start
  • High power output of 4500 peak watts and clean energy with <3% THD.
  • Convenient telescoping handle for easy transport and portability.
  • Effortless ignition with remote electric start via key fob.
  • Versatile connections with multiple outlets including RV-ready options.
  • Integrated LED display shows fuel level, power output, and runtime.
  • Gas powered and parallel capable for expanded power generation.
2
Honda EU2200ITAN 2200-Watt Super Quiet Inverter Generator with CO-Minder
  • 10% more power output than the EU2000i for versatile use.
  • CO-MINDER system shuts down unit upon detecting high CO levels.
  • My Generator app allows remote operation and monitoring via Bluetooth.
  • Weighs just over 47 pounds for easy portability and storage.
  • Powered by Honda’s reliable GXR120 Commercial Series engine.
  • Compact design enhances convenience for transportation and use.
3
Westinghouse 9500W Dual Fuel Portable Generator with Remote Start
  • Dual fuel capability: gas (7500W) or propane (6750W) for operational flexibility.
  • Large 6.6-gallon fuel tank with gauge for easy monitoring of fuel levels.
  • Remote electric start feature with key fob for convenient ignition from a distance.
  • Comprehensive control panel with multiple outlets for diverse power needs and safety.
  • Includes essential accessories for quick setup and immediate use.
  • Powerful backup solution, delivering up to 9500 peak watts for home emergencies.
4
Yamaha EF2200iS Inverter Generator – 2200 Watts, Quiet, Reliable Power Source
  • Powered by a reliable Yamaha 79cc engine for high performance.
  • Quiet operation due to advanced muffler technology for noise-sensitive areas.
  • Includes a standard RV outlet for easy connectivity without adapters.
  • Features a DC outlet for charging multiple devices while on the go.
  • LED display for convenient monitoring of generator status at any time.
  • Compact and lightweight design for portability and convenience in use.
5
Champion 11,500-Watt Dual Fuel Portable Generator with Electric Start
  • Dual fuel capability, works on gasoline or propane for versatile fuel options.
  • Convenient electric start with battery for easy operation via a rocker switch.
  • Powerful 459cc engine provides reliable power generation under various conditions.
  • Intelligent monitoring system tracks voltage, hertz, and run-time for maintenance.
  • High output: 11,500 starting watts and 9,200 running watts on gasoline.
  • Lower output when using propane, maintaining performance and flexibility.
6
Westinghouse 4650 Peak Watt Portable Generator, RV Ready 30A Outlet
  • Provides 3600 running watts and 4650 peak watts output for reliable power.
  • Equipped with a 4-gallon fuel tank that includes a fuel gauge for convenience.
  • Can run up to 14 hours on a single tank for extended use during outages.
  • Features a variety of receptacles including one RV-ready outlet for flexibility.
  • Powered by a 212cc Westinghouse 4-stroke OHV engine for efficient performance.
  • Includes automatic low oil shutdown for enhanced safety and engine protection.
7
Briggs & Stratton P2400 PowerSmart Inverter Generator with CO Guard
  • LED alerts for low oil and overload for convenient monitoring.
  • CO Guard Technology automatically shuts down for safety.
  • Inverter technology ensures safe power for sensitive electronics.
  • Noise-reducing shell minimizes operational noise and protects components.
  • Parallel connector port allows connecting two units for increased power.
  • 2400 starting watts and 1800 running watts for versatile applications.

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