10 BEST 4000 WATT GENERATORS for sale in 2025 – compare between the best 4000 watt generators on sale.

Rank Product Rating
1
Westinghouse WGen6000 Portable Generator 6000 Rated & 7500 Peak Watts, Gas Powered, Electric Start, Transfer Switch Ready, CARB Compliant
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Product Highlights
  • 6000 Running Watts and 7500 Peak Watts; Electric and Recoil Start; Up to 13 Hours of Run Time on a 6. 6 Gallon Fuel Tank With Fuel Gauge
  • Features Two GFCI (Ground Fault Circuit Interrupter) 5–20R 120V Household Duplex Receptacle and One Transfer Switch Ready L14-30R 120/240V Twist-Lock Receptacle; All Outlets Have Rubber Covers for Added Safety
  • Plug-and-Play! Comes With Oil, an Oil Funnel, a Tool Kit, and a User’s Manual to Get You Started Right Out of the Box (Minimal Assembly Required)
  • Powered by a 420cc Westinghouse 4-Stroke OHV Engine Featuring a Long-Lasting Cast Iron Sleeve With Automatic Low Oil Shutdown and Digital Hour Meter

$688.69
2
WEN GN400i RV-Ready 4000-Watt Open Frame Inverter Generator, CARB Compliant, Black/orange
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31 Reviews
Product Highlights
  • Dimensions: 19.8" L x 13.8" W x 18.9" H | Weight: 66.1 lb
  • 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

$474.02 $447.51
3
XtremepowerUS 4000-Watt Gasoline Generator Emergency Lifan Engine Camping 4-Cycle Gas Powered Air Cooled OHV (EPA)
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6 Reviews
Product Highlights
  • 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

$309.95
4
Champion Power Equipment 100573 4000-Watt DH Series Open Frame Inverter, Wireless Remote Start
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16 Reviews
Product Highlights
  • Advanced Open Frame Inverter Design: 50% quieter and 20% lighter than a traditional Champion 3500-watt generator, plus this inverter only produces Clean Power, and Economy Mode saves fuel
  • Wireless Remote Start: The wireless remote key fob allows you to start and stop your inverter from up to 80 feet away, plus the electric push-button start includes a battery
  • 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 17 hours run time on gasoline
  • Parallel Ready: The optional Parallel Kit allows you to increase your power output even more by connecting up to two 2800-watt or higher inverters or digital hybrids

$779.00 $693.01
5
Champion 4000-Watt RV Ready DH Series Open Frame Inverter with Quiet Technology
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295 Reviews
Product Highlights
  • Advanced Open Frame Inverter Design: 50% quieter and 20% lighter than a traditional Champion 3500-watt generator, plus our Economy Mode feature saves fuel and extends engine life
  • 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 17 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) and 12V DC outlet with dual USB adapter
  • Parallel Ready: Increase your power output by connecting up to two 2800-watt or higher inverter or digital hybrid with the optional Parallel Kit

$1,091.00 $685.99
6
DuroMax New_XP4000S Refurbished 4000W 50-State Portable Gas Engine Generator, Blue
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108 Reviews
Product Highlights
  • Your purchase includes One DuroMax XP4000S 4000 watt 7-Hp Air Cooled OHV Gas Engine Portable RV Generator, One oil funnel, One spark plug wrench, tools set, DC charging cables and owner’s manual
  • Portable Generator dimensions: 24” L x 17" W x 17" H. Product weight: 105 lbs
  • Specifications: Noise level – 69 dB. Fuel tank capacity (GASOLINE) – 3.96 gallons
  • Run your generator with Gasoline for long lasting power

$699.11
7
A-iPower AP4000 4,000-Watt Gasoline Powered Manual Start Generator, 4000 WATT, red
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12 Reviews
Product Highlights
  • 4, 000 Starting Watts / 3, 000 Running Watts
  • 208cc / 7HP OHV, single cylinder, air-cooled, 4-stroke engine with manual start
  • High performance alternator provides greater peak wattage which allows motor-driven appliances and tools to operate simultaneously
  • RV Ready. This generator is built with a TT-30R RV outlet for your convenience when Rving.

$369.25
8
Westinghouse iGen4500 Super Quiet Portable Inverter Generator 3700 Rated & 4500 Peak Watts, Gas Powered, Electric Start, RV Ready, CARB Compliant
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1,212 Reviews
Product Highlights
  • 3700 Rated Watts and 4500 Peak 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

$1,049.00 $949.00
9
WEN 56475 4750-Watt Portable Generator with Electric Start and Wheel Kit
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Product Highlights
  • 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

$414.34
10
Durostar DS4000S Portable Generator, Yellow/Black
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771 Reviews
Product Highlights
  • POWERFUL DUROSTAR ENGINE: The DS4000S is powered by a DuroStar 7 HP 208cc OHV engine with automatic low oil shutoff; Fuel Capacity: 3.96 Gallons; Noise Level: 69dB
  • PLENTY OF POWER: With 4,000 peak watts and 3,300 running watts, this unit is a workhorse that provides plenty of power to handle multiple jobs from powering high voltage appliances to heavy duty power tools
  • 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; Also includes a voltmeter for measuring voltage output
  • POWERING EVERYONE ANYWHERE: Like all DuroStar generators, the DS4000S is EPA and CARB approved for use in all 50 states

$420.00 $349.00

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