best 4000 watt inverter generator


Hello everyone, and welcome to my review of the best 4000 watt inverter generators. If you’re reading this post, I assume you’re already aware of what an inverter generator is and why it’s important to have one. In case you’re not, an inverter generator is a small, portable power generator that converts DC power to AC power, making it safe to use with electronic devices.

It’s essential to select the right wattage for your needs. If you don’t choose the right wattage, it can cause your generator to fail, waste energy, and potentially damage your electronic devices. That’s why we decided to review the top 5 best 4000 watt inverter generators available in the market.

Top 5 Best 4000 Watt Inverter Generators:

Generator 1 – Honda EU400iS

The first generator on our list is the Honda EU400iS. This generator is remarkably quiet, making it an ideal choice for those who want a silent generator. It has a 4000-watt output and is fuel-efficient, which means it can run for up to 18 hours straight on a single tank of gas. It also features eco-throttle technology, making it an eco-friendly generator. However, it is a bit on the expensive side compared to some other options.

Generator 2 – Champion 100302

The second generator on our list is the Champion 100302. This generator is well-known for its reliability, and it’s perfect for use during power outages. It has a 4000-watt output and can run for up to 17 hours on a single tank of gas. It also comes with a handy remote start function, making it much more convenient to use. However, the noise level is somewhat higher than other generators.

Generator 3 – Westinghouse iGen4500

The third generator on our list is the Westinghouse iGen4500. This generator is designed with safety in mind, featuring overload protection, low oil shutoff, and a built-in safety fuel valve. It has a 4000-watt output and can run for up to 14 hours on a single tank of gas. It also has a handy electric start feature, making it easy to start up. However, it’s another rather expensive option.

Generator 4 – Yamaha EF4500iSE

The fourth generator on our list is the Yamaha EF4500iSE. It’s another example of a super quiet generator, making it perfect for indoor use. It has a 4000-watt output and can run for up to 18 hours on a single tank of gas. It also comes with a low oil shutoff feature, which is helpful in preventing engine damage. However, it’s the most expensive option on our list.

Generator 5 – WEN GN400i

The fifth generator on our list is the WEN GN400i. If you’re looking for a reliable, affordable 4000 watt generator, the WEN GN400i is an excellent option. It has a 4000-watt output and can run for up to 10 hours on a single tank of gas. It also features an eco-mode, which saves fuel and reduces the overall noise level. However, it’s not as durable as other generators.

Frequently Asked Questions:

Q. What are the advantages of an inverter generator?

A. Inverter generators are designed to be more fuel-efficient, which means they can run longer and use less fuel. They also produce less noise, making them more convenient to use in residential areas. Additionally, they are safer to use with electronic devices than conventional generators because they regulate voltage output.

Q. Can I use a 4000 watt inverter generator on sensitive electronics?

A. Yes, you can use a 4000 watt inverter generator on sensitive electronic devices. However, it’s always a good idea to double-check the device’s voltage requirements before connecting it to the generator.

Q. How long can a 4000 watt inverter generator run?

A. The length of time a 4000 watt inverter generator can run depends on several factors, including the fuel capacity, the load, and the model itself. The generators on our list can run anywhere from 10 to 18 hours on a single tank of gas.


Now that we’ve reviewed the top 5 best 4000 watt inverter generators, it’s time to make a final recommendation. If you’re looking for a well-built, reliable, and eco-friendly generator, the Honda EU400iS is an excellent option despite being on the expensive side.

If you’re looking for a more affordable option, the WEN GN400i is a great choice. For those who want a super quiet generator, either the Honda or Yamaha options would be the best. Finally, if you’re looking for a generator that’s jam-packed with safety features, the Westinghouse iGen4500 is the way to go.

Overall, the choice of a generator depends on individual preferences and requirements. We hope this review has helped you to make the right decision. If you have any further questions or comments, please leave them below.

List of 10 best 4000 watt inverter generator

Bestseller No. 1
ROCKSTONE POWER 5000 Watt Voltage Converter Transformer - Heavy Duty Step Up/Down AC 110V/120V/220V/240V Power Converter - Circuit Breaker Protection – DC 5V USB Port - CE Certified [3-Year Warranty]
  • 5000 Watts Heavy Duty Step Up/Down Voltage Transformer Converter. Step Up Voltage from 110-120 Volts to 220-240 Volts. Step Down Voltage from 220-240 Volts to 110-120 Volts.
  • Patented Simultaneous 3-Mode Output: 5V USB Port / 120V USA Output Socket / 220V Universal Output Socket. CE Certified. 3-Year Manufacturer's Limited Warranty. Metal Casing. Full Range Fuse Protection. Full Range Over Current Protection.
  • RockStone Power proudly supports the United States Military since 2001, and have became a proud supplier for Tesla Inc. since 2018. Shipping is available to all Overseas Military APO/FPO/DPO addresses.
  • For safety reasons, it's recommended to use a Voltage Converter/Transformer that's max watts is at least 50% higher than your appliance. For example; 5,000 transformer can be only be used with an appliance that uses up to 3,300 Watts that is to prevent damage from the transformer itself and the appliance being used.
  • Package Contents: Rockstone Power 5000 Watt Heavy Duty Voltage Transformer Converter, Hardwired Heavy Duty Insulated Power Cord with USA Grounded 3-Prong Plug, American to European Grounded Schuko Wall Outlet Plug Adapter, 2 PCS Spare Fuses, and Instruction Manual.
Bestseller No. 2
Yinleader Voltage Converter Transformer(220V to 110V, 110V to 220V) Step Up/Down Transformer Converter 110/120 Volt - 220/240 Volt - Circuit Breaker Protection (VTUS-3000-6S)
  • 【3000W Voltage transformer】We provide you a safe, dependable, stable, cost-effective & easy solution to converting voltages from 110 volts up to 220 volts or from 220 volts down to 110 volts.
  • 【Wide appllication】The Voltage Transformer Converter can be used with any kind of appliance or device,such as rice cookers, hot water pots, household food mixers, blenders with the Maximum Power Consumption (MPC) between 1050 and 2250 watts.
  • 【7x24hrs Continous Run】High efficiency toroidal transformer with stable output and low consumption.
  • 【AC outputs】 3 US Standard Socket for 110-120V appliance(s) & 3 Universal Sockets accept all types of plugs except the Big South African plug for 220-240V appliance(s).The transformer can be used in countries which voltage are 90V~125V or 180V~250V such as US, EUR, UK, JP and more.
  • 【Protection】Circuit breaker protective for each voltage that is safe operation.【If you have any questions, please feel free to contact us.】
SaleBestseller No. 3
Simran AC-5000 Step Up/Down Voltage Transformer Power Converter for Conversion Between 110 Volt and 220 Volts with Circuit Breaker, CE Certified, 5000 Watts, Black
  • This CE Certified 5000 Watt Heavy-Duty Continuous Use Voltage Converter Transformer Can Be Used In Both 110V/120V Countries and 220V/240V Countries With 50Hz / 60Hz
  • Step Up 110V/120V To 220V/240V Or Step Down 220V/240V To 110V/120V (Switch Is On The Back Of The Unit)
  • Six Outlets On Front Of The Unit. Two Outlets For 110V and Four Outlets For 220V. On/Off Power Switch With Indicator Lamp; Wired With A 3-pin USA Plug
  • The 220V Outlet Has Two USA Patented Universal Output Socket That Will Accept All Types Of Plugs except The Big South African Plug
  • Fuse Protected - 2 Spare Fuses And A Grounded European Shucko Plug Adapter Included For Use In Europe and Asia. " CE" Certified
Bestseller No. 4
YaeCCC ST-5000 Step Up Step Down Transformer 110V to 220V Step Up Voltage Converter Transformer
  • Heavy Duty Step Up/Down Voltage Converter Transformer (110/120V - 220/240V).
  • CE Certified. Dual Circuit Breakers Protection for Each Voltage (120V & 220V).
  • Heavy-duty cord with a standard US 3-prong plug. Use for use & industrial applications.
  • 220 volt only universal outlet which accepts plugs from most countries.
  • Circuit breakers protects the equipment against overload.
SaleBestseller No. 5
Wagan EL3808 Pure Line Power Inverter 2000 Watt DC 12V to 110V AC Car Pure Sine Wave Power Inverter for Home RV Camping Van Life Off Grid ETL Certified
  • Wagan True Rated Power: 2000W with Surge power 4000W
  • Pure Sine Waves (PSW) - allows these electronics to run cooler (less cycling), cleaner, and with less noise. PSW is the output form that comes from the AC Wall outlet in your house and is the most clean.
  • Fast Charging - two 3-prong ground fault protected AC outlets (NEMA 5-15), 3 position power switch (On > Off > Remote), 2. 1A USB Power Port, Power And Fault Lights, Solid Mounting Feet
  • Ground Fault Protected Outlets - the Negative (Black) Solid Mount Terminal, Positive (Red) Solid Mount Terminal, Twin Cooling Fans, Solid Mounting Feet, and a Grounding Terminal
  • RoHS compliant, CE approved, and ETL certified to conform to UL and CSA Standards
SaleBestseller No. 6
Champion Power Equipment 200961 2500-Watt Dual Fuel Portable Inverter Generator, Ultralight
  • DUAL FUEL: Operate your 2500-watt portable generator right out of the box on either gasoline or propane, plus at only 39 pounds, this inverter is one of the lightest 2500-watt inverters in the industry
  • QUIET OPERATION: With an ultra-quiet 53 dBA from 23 feet, enjoy 2500 starting watts, 1850 running watts and up to 11.5 hours run time on gasoline, and 1665 running watts and up to 34 hours on propane
  • PARALLEL READY: The optional, sold-separately clip-on parallel kit enables this inverter to connect with another 2500-watt Champion inverter to double your output power. GFCI Outlets : No
  • CLEAN POWER: Includes two covered 120V 20A household outlets with clean electricity (less than 3% THD), a 12V automotive-style outlet, plus a handy dual port USB adapter
  • CHAMPION SUPPORT: Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts
SaleBestseller No. 7
Jackery Portable Power Station Explorer 300, 293Wh Backup Lithium Battery, 110V/300W Pure Sine Wave AC Outlet, Solar Generator (Solar Panel Not Included) for Outdoors Camping Travel Hunting Blackout
  • SPEED UP YOUR RECHARGEABILITY: It takes only 2 hours to recharge 80% battery of the power station through the wall outlet and 60W PD USB-C port simultaneously. You can also recharge your power station with an AC adapator when at home, through the car outlet during a road trip or simply use a Jackery SolarSaga 100.
  • SAFE & STEADY POWER SUPPLY: Armed with a 293Wh lithium-ion battery pack, the Explorer 300 features 2 Pure Sine Wave AC outlets that deliver stable and safe 300W power. The portable power station weighs only 7.1 pounds. You can simply rest assured in outdoor off-grid activities.
  • POWER YOUR EXPECTATIONS: Featuring 2* AC outlet, 1* PD 60W USB-C port (input/output supported) , 1* fast charge 3.0 port, 1*USB-A port and 1* DC car port, the power station can recharge itself and charge (up to) 6 devices (e.g.Drones, Macbook, Cameras, etc.) at the same time to satisfy your outdoor needs.
  • GREEN POWER SUPPLY: The power station is compatible with the Jackery SolarSaga 100 solar panel. The integrated MPPT controller enables the solar generator set to operate at its max power point, so that it speeds up the battery recharge, making them ideal portable power kits for tent camping, overland journey and etc.
  • WHAT YOU GET: 1* Jackery Explorer 300 Portable Power Station , 1*AC adapter, 1* car charger cable, 1* user guide
Bestseller No. 8
400W Power Inverters for Vehicles - DC 12v to 110v AC Car Inverter Converter, 6.2A Dual USB Charging Ports, Dual AC Adapter for Air Compressor Laptops
  • 【Pro Chaser Power Inverter Basics】: Our inverter produces 400 Watts continuous DC to AC power and 800 Watts instantons power, with dual 110V AC power sockets and 6.2A dual USB ports (3.1A each) power outlets.
  • 【Ideal for Road Trips】: Plug-in & go drawing power from Cigarette Lighter Socket Charger. The 6.2A dual USB ports can be used to charge appliances such as kindles, cellphones, iPads, tablets, cameras, air pods and etc. And the power sockets can be used to supply power to any appliances requiring 300W to 400W power such as laptops, DVD players, breast pumps, bottle warmers, milk warmer, PS4, Xbox, TV, power tool battery charger, air compressor and etc.
  • 【Portable Design】: The compact cellphone-sized design ideal for carrying around in vehicles. The 30 inch (75 cm) cord allows the inverter to reach out long towards back seat. Ideal for road trips, camping & vacations.
  • 【Built-in Safety Protection】The built-in fuse provides full protection against short-circuit, over-load, low-voltage, over-voltage & over-temperature. The cooling fan turns on automatically when internal temperature reaches 113F (45℃), maintaining the working temperature in a cool and safe range.
  • 【Durable Metal Housing】Durable metal housing provides advanced protection from drops and bumps. Evenly colored housing with neat laser print on the surface delivers fashionable finish. 12-month Warranty.
SaleBestseller No. 9
Champion Power Equipment 200954 4250-Watt RV Ready Open Frame Inverter Generator, Quiet Technology
  • ADVANCED DESIGN: 50% quieter and 20% lighter than a traditional 4250-watt generator, plus Economy Mode saves fuel and extends engine life, and Intelligauge monitors voltage, frequency and operating hours
  • QUIET TECHNOLOGY AND EXTENDED RUN TIME: 64 dBA is great for RVs, tailgating, your next project or home backup, with 4250 starting watts and 3500 running watts for up to 22 hours run time on gasoline
  • CLEAN ELECTRICITY FOR SENSITIVE ELECTRONICS: RV Ready with a 120V 30A RV, plus two 120V 20A household outlets with clean power (less than 3% THD) plus two convenient USB ports
  • PARALLEL READY: Increase your power output by connecting up to two 2800-watt or higher inverter or digital hybrid with the optional Parallel Kit (sold separately)
  • CHAMPION SUPPORT: Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts
SaleBestseller No. 10
EF ECOFLOW Portable Power Station RIVER 2, 256Wh LiFePO4 Battery/ 1 Hour Fast Charging, 2 Up to 600W AC Outlets, Solar Generator (Solar Panel Optional) for Outdoor Camping/RVs/Home Use
  • [1 Hour AC Recharge] - Fully recharge the electric generator using an AC outlet in only 1 hour with EcoFlow's X-Stream fast charging technology.
  • [Power All Your Essentials] - With an output of up to 600W, run 6 essential appliances simultaneously without worrying about overloading. With a whole host of ports, from 300W AC outlets to USB-C, we've got all your device's plugs covered.
  • [LFP Long-Life Battery] - Using LFP battery cells, use and recharge RIVER 2 more than 3000 times before hitting 80%. That's almost 10 years of regular use. RIVER 2 includes advanced BMS protection, monitoring voltage, current, and temperature to keep your LFP battery running for years.
  • [Fast Solar Charging] - Use clean, green renewable energy to recharge RIVER 2 power generator in as fast as 3 hours with 110W solar input.
  • [Light & Portable] - With a lightweight of only 7.7 lbs, RIVER 2 is the ideal outdoor generator for all your off-grid adventures. With a built-in handle, this portable battery is easy and convenient to take anywhere you need power.

People also ask

What is a 4000 watt inverter generator?

A 4000 watt inverter generator is a portable power generator that can provide up to 4000 watts of power output. It uses an inverter technology that converts DC power to AC power, making it safe to power sensitive electronic devices.

What are the benefits of a 4000 watt inverter generator?

Some of the benefits of a 4000 watt inverter generator include:

  • Portability
  • Quiet operation
  • Efficient fuel consumption
  • Safe for sensitive electronic devices
  • Provides enough power for most household appliances and tools
What can I power with a 4000 watt inverter generator?

A 4000 watt inverter generator can power most household appliances, such as refrigerators, TVs, and lights. It can also power power tools such as drills, saws, and air compressors.

What is the best 4000 watt inverter generator?

There are many great options for a 4000 watt inverter generator. Some of the best models include Honda EU4000iS, Generac GP3500iO, and Westinghouse iGen4500.

How long can a 4000 watt inverter generator run?

The runtime of a 4000 watt inverter generator depends on the fuel tank size and the power output. Most models can run for 8 to 12 hours on a full tank of gas at 50% load.

How do I maintain my 4000 watt inverter generator?

To maintain your 4000 watt inverter generator, you should change the oil regularly, replace the air filter, and check the spark plug. You should also store it properly when not in use and use high-quality fuel.

Can I use a 4000 watt inverter generator indoors?

No, you should not use a 4000 watt inverter generator indoors as it produces carbon monoxide, which can be deadly. Always use it outdoors in a well-ventilated area.

Is a 4000 watt inverter generator waterproof?

No, a 4000 watt inverter generator is not waterproof. It should be protected from rain and other elements to prevent damage and ensure safe operation.