Hello there! Are you tired searching for the best 4000w generator but could not able to find the right one? Worry not readers, because in this article, we have covered everything you need to know before buying the 4000w generator online. Keep Reading!

Choosing the best 4000w generator can be a tough job, especially when you are looking for one that suits your budget. Therefore, we have listed the top 10 4000w generator available at best prices with all the latest demanding features catering to your needs. We have analysed each and every product and have shared detailed information about them. Based on our personal review, we found this XtremepowerUS 4000-Watt Gasoline Generator Emergency Lifan Engine Camping 4-Cycle Gas Powered Air Cooled OHV (EPA) best in our list. However, if you are looking for a product with a cheaper price, then you can check out WEN GN400i RV-Ready 4000-Watt Open Frame Inverter Generator, CARB Compliant, Black/orange which is equally good with good reviews. We are very much sure that you’ll be able to make a wiser decision in buying the Top 4000w generator by going through the exclusive list mentioned below.

All the products listed in this guide are good in their own way. You simply have to pick one that you feel delivers on the best performance. Let us get right into them already. Check the quick reviews below.

Best 4000w generator

Image
Product Title
Score

Durostar DS4000S Portable Generator, Yellow/Black
9.8

DuroMax XP4400E 4400 watt 7-Hp RV Grade Gas Generator with Electric Start
9.4

XtremepowerUS 4000-Watt Gasoline Generator Emergency Lifan Engine Camping 4-Cycle Gas Powered Air Cooled OHV (EPA)
9.1

WEN GN400i RV-Ready 4000-Watt Open Frame Inverter Generator, CARB Compliant, Black/orange
8.9

WEN 56475 4750-Watt Portable Generator with Electric Start and Wheel Kit
8.4

Westinghouse iGen4500 Super Quiet Portable Inverter Generator 3700 Rated & 4500 Peak Watts, Gas Powered, Electric Start, RV Ready, CARB Compliant
8.2

Champion Power Equipment 100574 4000-Watt RV Ready Digital Hybrid Inverter Generator with Dual Fuel Technology
7.6

Generac 7127 iQ3500-3500 Watt Portable Inverter Generator Quieter Than Honda, Orange/Black
7.5

WEN DF475T Dual Fuel 120V/240V Portable Generator with Electric Start Transfer Switch Ready, 4750-Watt, CARB Compliant
7.1

Champion Power Equipment 100522 3500-Watt RV Ready Portable Generator with Wheel Kit, CARB
6.8

Durostar DS4000S Portable Generator, Yellow/Black


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Durostar DS4000S Portable Generator, Yellow/Black

 out of stock
Amazon.com
as of April 26, 2025 6:02 pm

Features

  • Plenty of Power – With 4,000 peak watts and 3,300 running watts, this unit can handle heavy loads, from lights and a refrigerator to a home air conditioner and high amperage power tools
  • Powerful Engine – The DuroStar 208cc OHV engine is a workhorse that provides plenty of power to handle multiple jobs, from powering high voltage appliances to heavy duty power tools
  • Low Oil Shutoff – Protects your investment by automatically shutting the generator off when it senses that the oil is low
  • Power Panel – The power panel includes a selection of outlets for maximum compatibility in your applications including: 2 120V household outlets and 1 120V 30A twist lock outlet. The panel also includes a voltmeter for measuring voltage output
  • Complies with Emissions Standards – All DuroStar generators are both approved by the EPA (Environmental Protection Agency) and CARB (California Air Resources Board) and follow strict guidelines to ensure our generators are as environmentally friendly as possible

DuroMax XP4400E 4400 watt 7-Hp RV Grade Gas Generator with Electric Start


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DuroMax XP4400E 4400 watt 7-Hp RV Grade Gas Generator with Electric Start

 out of stock
Amazon.com
as of April 26, 2025 6:02 pm

Features

  • Plenty of Power – With 4,400 starting watts and 3,500 running watts, this unit can handle heavy loads, from lights and a refrigerator to a home air conditioner and high amperage power tools
  • Powerful Engine – The DuroMax 210cc OHV engine is a workhorse that provides plenty of power to handle multiple jobs, from powering high voltage appliances to heavy duty power tools
  • MX2 Technology - Get the maximum power from each of the 120-volt receptacles. Choose between operating the generator at both 120V and 240V simultaneously, or at 120V only with full power. Ideal for usage with RVs
  • Low Oil Shutoff – Protects your investment by automatically shutting the generator off when it senses that the oil is low
  • Fully Featured Power Panel – The power panel includes a wide selection of outlets for maximum compatibility in your applications including: 2 120V household GFCI outlets and 1 120/240V 30A twist lock outlet. The panel also includes a voltmeter and 12V DC charging posts for charging external batteries

XtremepowerUS 4000-Watt Gasoline Generator Emergency Lifan Engine Camping 4-Cycle Gas Powered Air Cooled OHV (EPA)


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XtremepowerUS 4000-Watt Gasoline Generator Emergency Lifan Engine Camping 4-Cycle Gas Powered Air Cooled OHV (EPA)

 out of stock
Amazon.com
as of April 26, 2025 6:02 pm

Features

  • Ideal Generator - Great for campgrounds, construction sites, backyard, party, tailgates and power outages
  • Safe and Easy Operation - Feature a user-friendly, Recoil start, that's easier than starting a lawn mower
  • Fully Loaded Power Panel - Panel has a engine shutoff switch, volt meter and circuit breakers
  • Powerful Generator - The Powerful 4000W Engine is Air Cooled and can withstand use and abuse
  • Powerful AC and DC Output - Featuring (1) 120V AC Twist-Lock Receptacles and (2) 120V 20amp AC Receptacles, so you can charge and power multiple devices at once

WEN GN400i RV-Ready 4000-Watt Open Frame Inverter Generator, CARB Compliant, Black/orange


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WEN GN400i RV-Ready 4000-Watt Open Frame Inverter Generator, CARB Compliant, Black/orange

 out of stock
Amazon.com
as of April 26, 2025 6:02 pm

Features

  • Dimensions: 19.8" L x 13.8" W x 18.9" H | Weight: 66.1 lb.amperage : 26.6 amps
  • Generate clean power to safely operate sensitive electronics such as phones, tablets, televisions and computers
  • Parallel-ready panel allows you to connect any two WEN inverter generators for increased wattage output
  • 212cc 4-stroke CARB-compliant OHV engine produces 4000 surge watts and 3500 rated watts
  • Includes two 120V NEMA 5-20R receptacles, two 5V USB ports, one 120V RV-ready TT-30R receptacle

WEN 56475 4750-Watt Portable Generator with Electric Start and Wheel Kit


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WEN 56475 4750-Watt Portable Generator with Electric Start and Wheel Kit

$457.05  in stock
2 new from $457.05
Free shipping
Amazon.com
as of April 26, 2025 6:02 pm

Features

  • Digital readout helps manage oil changes and maintenance schedule
  • Features electric start, low-oil shutdown, an automatic voltage regulator and overload protection to maximize safety
  • CARB and EPA III meet requirements for sale in all 50 states
  • Includes wheel kit and foldable handles for easy transport
  • 223cc engine provides 4,750 surge watt and 3,750 rated watt

Westinghouse iGen4500 Super Quiet Portable Inverter Generator 3700 Rated & 4500 Peak Watts, Gas Powered, Electric Start, RV Ready, CARB Compliant


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Westinghouse iGen4500 Super Quiet Portable Inverter Generator 3700 Rated & 4500 Peak Watts, Gas Powered, Electric Start, RV Ready, CARB Compliant

$1,099.00
$849.00
 in stock
4 new from $849.00
Free shipping
Amazon.com
as of April 26, 2025 6:02 pm

Features

  • 5000 Peak Watts and 3900 Rated Watts at Less Than 3% THD; Telescoping Handle; Gas Powered; Remote Start With Included Key Fob, Electric and Recoil Start
  • Features a 5–20R 120V Duplex Household Outlet, an RV-Ready Tt-30R 30 Amp Outlet and Two USB Outlets – Great Choice for Travel Trailers or Home Use – Strong Enough to Run All Your Essentials
  • Led Data Center: Rotating Digital Display Shows Fuel Level, Power Output, Remaining Run Time, Voltage Output, and Lifetime Hours
  • Extremely Quiet, Extremely Fuel Efficient: as Low as 52 dBA Noise Output and Up to 18 Hour Run Time on a 3. 4 Gallon Gas Tank – Features “Economy Mode” for Maximum Fuel Efficiency
  • All Westinghouse Portable Generators are Functionally Tested in the Factory and May Contain Minimum Residual Oil and/or Fuel Odor; EPA Compliant; Backed By 3-Year Limited Service, Labor, and Parts Coverage and Nationwide Customer Service Network

Champion Power Equipment 100574 4000-Watt RV Ready Digital Hybrid Inverter Generator with Dual Fuel Technology


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Champion Power Equipment 100574 4000-Watt RV Ready Digital Hybrid Inverter Generator with Dual Fuel Technology

 out of stock
Amazon.com
as of April 26, 2025 6:02 pm

Features

  • Advanced Digital Hybrid Design: 50% quieter and 20% lighter than a traditional Champion 3500-watt generator, plus our Economy Mode feature saves fuel and extends engine life
  • Duel Fuel: This RV Ready inverter operates on gasoline or propane and has a 120V 30A RV, plus two 120V 20A household outlets and 12V DC outlet with dual USB adapter
  • Quiet Technology and Extended Run Time: 64 dBA is great for RVs, tailgating, your next project or home backup, with 4000 starting watts and 3500 running watts for up to 14. 5 hours run time on gasoline
  • Parallel Ready: If you purchase the optional ParaLINK Parallel Kit, you can increase your power output by connecting up to two 2800-watt or higher inverters or digital hybrids
  • Champion Support: Includes 3-year limited with FREE lifetime technical support from dedicated experts

Generac 7127 iQ3500-3500 Watt Portable Inverter Generator Quieter Than Honda, Orange/Black


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Generac 7127 iQ3500-3500 Watt Portable Inverter Generator Quieter Than Honda, Orange/Black

$1,458.15  in stock
4 new from $1,458.15
1 used from $999.00
Amazon.com
as of April 26, 2025 6:02 pm

Features

  • Portable Power Solution: Designed for easy portability, the iQ3500 is both durable and lightweight, making it the ideal power source for your outdoor adventures. From your tailgating parties to camping trips, the jobsite and beyond, it has you covered
  • Easy Start-Up: The generator features Electric Start with a battery included and an intuitive PowerDial that integrates start, run, and stop functions into one simple-to-use dial, making startup quick and hassle-free
  • PowerRush Advance Technology: This portable inverter generator offers over 50 percent more starting capacity, making it perfect for powering tools and motor-driven equipment, allowing you to accomplish more with ease
  • Quieter Operation: The iQ3500 inverter generator offers a 40% reduction in noise compared to other generators, thanks to advanced inverter technology and enclosure design, while also delivering 16% more power, allowing you to accomplish more with less
  • Smart and Reliable: Enjoy the convenience of USB ports for charging mobile devices, an Economy Mode for reduced noise and fuel consumption, low-oil level shutdown for engine protection, and parallel-ready capability for doubling your power output

WEN DF475T Dual Fuel 120V/240V Portable Generator with Electric Start Transfer Switch Ready, 4750-Watt, CARB Compliant


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WEN DF475T Dual Fuel 120V/240V Portable Generator with Electric Start Transfer Switch Ready, 4750-Watt, CARB Compliant

$499.99  in stock
Amazon.com
as of April 26, 2025 6:02 pm

Features

  • Switch between gasoline (4750 surge watts, 3800 running watt) and propane (4350 surge, 3500 running) with the simple turn of the selection dial
  • Voltage easily goes from 120V to 240V, perfect for transfer switches and emergency backup
  • Electric start powers the 224cc 4-stroke OHV engine with the turn of a key
  • 4-gallon tank provides up to 11 hours of half load run time
  • Includes two 120V GFCI outlets (5-20R), a 120V/240V NEMA 30A twist lock (L14-30R), a 12V DC cigarette-lighter-style plug, a bottle of oil, a wheel and handle kit, a 47-inch LPG connection hose, and a 2-year warranty

Champion Power Equipment 100522 3500-Watt RV Ready Portable Generator with Wheel Kit, CARB


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Champion Power Equipment 100522 3500-Watt RV Ready Portable Generator with Wheel Kit, CARB

 out of stock
Amazon.com
as of April 26, 2025 6:02 pm

Features

  • DESIGNED FOR SAFETY: Includes a low oil shut-off sensor and holds 0.6-quarts of oil (recommended 10W-30)
  • RELIABLE AND POWERFUL: At 4375 starting watts and 3500 running watts, enjoy up to 12 hours of run time on a full tank of gasoline with a noise level of 68 dBA from 23 feet
  • COVERED OUTLETS: 120V 30A locking, 120V 30A RV and two 120V 20A outlets - Volt Guard built-in surge protector prevents overloads and keeps your appliances and equipment safe
  • INTELLIGAUGE: Monitor voltage, frequency and operating hours with ease
  • CHAMPION SUPPORT: Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts

So, These are some of the best 4000w generator with all the major features that you must be looking for. Now you can easily pick out the best one based on your budget, needs and preferences. Still, if you found yourself confused about choosing the best product, then you can try this XtremepowerUS 4000-Watt Gasoline Generator Emergency Lifan Engine Camping 4-Cycle Gas Powered Air Cooled OHV (EPA) for more recommendations. Hope you enjoyed reading the article!