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Best 4000 Watt Portable Generators 2020 – Reviews & Top Picks

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Best 4000 watts Portable GeneratorWhen you need plenty of power to run multiple appliances, you need a generator that not only can supply up to 4,000 watts but can also be transported with ease. Most larger portable generators available for 2020 are up to this challenge. They can maneuver as needed and still meet your power requirements. But it can be a time-consuming task trying to decide which features and performance level will work best for your situation.

Let us help! We’ve reviewed and ranked the 10 best 4,000-watt portable generators. Our reviews include essential facts and insights, along with a quick pros & cons list. Also, be sure to check out our buyer’s guide for more helpful information.


The Winners of 2020:

ModelPriceWarrantyEditor Rating
Champion 100302
small Champion 100302
(Best Overall)

Check Price
3 Years4.85/5
DuroStar DS4,000S
small DuroStar DS4,000S
(Best Value)

Check Price
3 Years4.70/5
Pulsar PG4,000iSR
small Pulsar PG4,000iSR
(Premium Choice)

Check Price
2 Years4.60/5
DuroMax XP4,000S
small DuroMax XP4,000S

Check Price
1 Year4.40/5
XtremepowerUS
small XtremepowerUS

Check Price
2 Years4.35/5

The 10 Best 4000W Portable Generators:

1. Champion RV Inverter Generator – Best Overall

Champion 100302

Our top pick for the best overall portable 4,000-watt generator goes to the Champion inverter generator. The Champion has a unique and innovative open frame inverter design which compared to similar wattage models, operates 50% quieter and weighs 20% lighter.

Although not as quiet as more expensive products on our list, the Champion does run at a moderate noise level especially when you set it on the fuel efficient eco-mode. Plus, it has an extended running time of up to 17 hours on 4,000 starting watts and 3500 running watts.

This generator comes with an inverter for clean power output, quick touch panel, a low oil shut-off sensor and a reliable recoil start which uses cold start technology. Plus, the Champion is parallel ready with the purchase of a parallel kit. However, be aware that a wheel kit requires an additional expense. At 81.6 pounds, the lack of wheels can make transporting this generator a difficult task.

Pros
  • Innovative open frame inverter design
  • Eco mode
  • Extended running time
  • Clean power output
  • Quick touch panel
  • Low oil shut-off sensor
  • Reliable recoil start
  • Parallel ready
  • Affordable price
Cons
  • Parallel kit and wheel kit sold separately
  • Moderate noise level

2. DuroStar Gas Portable Generator – Best Value

DuroStar DS4,000S

For the best 4,000-watt portable generator for the money, we selected the DuroStar gas powered portable generator. The DuroStar has a powerful 7.0-horsepower engine with a peak of 4,000 running watts and 3,300 running watts. At half load, this generator can run for eight hours on a four-gallon tank of fuel.

The Durostar includes a fuel gauge, a low-oil shutoff and a power panel with a broad selection of outlets. With a heavy-duty steel frame construction including a sufficient muffler, this generator runs moderately quietly. Also, we found the recoil start to work rather consistently.

Be aware, despite the lower price, you’re not getting clean power output as this generator does not employ an inverter or offer eco mode. Also, the Durostar does not include wheels. A wheel kit is available for an additional purchase. However, we learned the kit may be difficult to install.

Pros
  • Best Value
  • Powerful 7-horsepower gas engine
  • Fuel gauge
  • Low-oil shutoff
  • Variety of outlet options on power panel
Cons
  • Lacks clean power output
  • Wheel kit not included and difficult to install
  • Moderate noise level
  • No eco mode

3. Pulsar Portable Gas-Powered Generator – Premium Choice

Pulsar PG4,000iSR

Our premium choice, the Pulsar portable gas-powered generator is capable of between 12 and 15 hours of extended operation on 3.4 gallons of fuel at half load, producing 4,000 peak watts and 3,500 running watts. Plus, sine WAVE technology on this inverter generator supplies stable and clean power output.

Convenient features on the Pulsar include an effective electric push start, parallel capability and several outlet choices. In addition, you can startup and operate this generator from up to 80 feet away with a wireless remote. Plus, its compact design, never-flat wheels and extendable handle make it easy to transport, maneuver and store this generator. Also, this Pulsar model is C.A.R.B approved and is compliant in all 50 states.

These extra features do come at a more expensive price. Also, while this generator does run more quietly than similar products, it tends to emit a whiny a noise when operating at full load. And finally, be aware you’ll need to account for a break-in period with your first use and it does not offer an eco-mode.

Pros
  • Extended operation
  • Clean power output
  • Electric push start
  • Parallel capability
  • Several outlet choices
  • Remote control included
  • Easy to maneuver and store
  • A.R.B approved and compliant in all 50 states
Cons
  • Expensive
  • Needs a break-in period
  • Whiny noise when at full load
  • No eco-mode

See our reviews of the best: Whole house generators


4. DuroMax Gasoline Powered Portable Generator

DuroMax XP4,000S

With a 7.0-horsepower air-cooled overhead valve engine, the DuroMax gasoline powered portable RV generator employs a reliable recoil start to supply a peak 4,000 watts and 3,300 of running watts. Its power panel includes helpful features such as an oil warning light, a voltmeter, a circuit breaker and multiple and varied power outlets. Plus, the DuroMax comes with a low oil shutoff to better protect its engine.

The DuroMax has a solid heavy-duty steel frame construction with four point fully isolated motor mounts for smooth and quiet operation. Although solidly built, we did discover this generator emits a moderate amount of noise and is heavy to transport at 90 pounds. Unfortunately, the Duromax does not include wheels or an eco-mode. Additionally, we did discover many instances of poor-quality control with components arriving damaged at purchase.

Pros
  • Powerful 7.0 hp air-cooled overhead valve engine
  • Features: oil warning light, a voltmeter, a circuit breaker
  • Offers multiple and varied power outlets
  • Low oil shutoff
  • Heavy-duty construction
Cons
  • Poor quality control
  • No inverter for clean power output
  • No eco mode
  • Wheels not included
  • Difficult to transport at 90 pounds
  • Moderate noise level

5. XtremepowerUS Gasoline Generator

XtremepowerUS

Powerful and durable, the XtremepowerUS Gasoline Generator has a reliable recoil start and an air-cooled engine that can supply a peak of 4,000 watts. Additionally, this generator produces clean power output which makes it safe to power up your sensitive electronics.

The XtremepowerUS has an easy-to-use power panel that features an engine shutoff switch, a voltmeter and circuit breakers however no eco-mode. With this generator, you also have access to one 120V AC Twist-Lock receptacles and two 120V 20amp AC receptacles.

Although the XtremepowerUS claims to run quietly, we found that it does produce a moderate amount of loudness at all load levels. Furthermore, at 105 pounds, this generator is heavy to transport. Wheels are not included and need to be purchased separately.

Pros
  • Reliable recoil start
  • Clean Power Output
  • Easy-to-use power panel
Cons
  • Moderately loud
  • Wheels not included
  • No eco mode
  • No low oil shutoff
  • Difficult to transport at 105 pounds

6. Sportsman Dual Fuel Portable Generator

Sportsman GEN4,000DF

You have the option to use either unleaded gasoline or propane gas with this dual fuel Sportsman portable generator. And for your ease-of-use, a five-foot propane fuel hose with a regulator is included at purchase.

The reliable recoil start powers up the 7 horsepower 212cc OHV, EPA approved engine to produce up to 4,000 peak watts and 3,500 running watts. At a 50% load, the Sportsman has an extended running time of ten hours on a full 3.6 gallon tank of gasoline and 12 hours on a full 20 pound tank of propane. Additionally, this generator gives you multiple outlet choices.

Aside from a few quality control issues, we found that the Sportsman performs well although a bit louder on higher loads than its claimed 69 decibels. Also, keep in mind that the Sportsman does not include an inverter, eco-mode, low oil shutoff or wheels for easy transport of this 90-pound generator.

Pros
  • Dual fuel options
  • 5-foot propane fuel hose included
  • Powerful 7hp engine/EPA approved
  • Extended running time
  • Multiple outlet choices
Cons
  • No inverter for clean power output
  • No low oil shutoff
  • No eco mode
  • Wheels not included
  • Difficult to transport at 90 pounds
  • Moderate noise level
  • Some quality control issues

7. WEN Open Frame Inverter Generator

WEN GN400i

Quite possibly the quietest product we’ve reviewed, the Wen open frame inverter generator lives up to its claim of being 50% quieter than other similar models. Plus, this generator weighs about 30% less than comparable products at 70 pounds. Unfortunately, it doesn’t included wheels which even at a lighter weight makes transport difficult.

This inverter generator employs a 212cc 4-stroke OHV engine that produces 4,000 surge watts and 3500 rated watts of clean power. Plus, the Wen has an extended run time of over seven hours at half-load on a 1.85-gallon tank. As an added benefit, you have the option to gain further fuel efficiency with the eco-mode setting.

Additional features include a power LED panel with multiple and varied receptacles, low-oil and low-fuel automatic shutdowns, built-in overload protection and indicator lights. We did find that the LED panel is too dim to read in direct sunlight. Also, this model comes with parallel capabilities, however the connection kit is sold separately.

Pros
  • Quiet operation
  • Lighter in weight
  • Inverter for clean power output
  • Extended run time
  • Eco-mode
  • Multiple and varied receptacles
  • Low-oil and low-fuel automatic shutdowns
  • Built-in overload protection
  • Parallel capability
Cons
  • Wheels not included
  • LED panel is too dim
  • Parallel connection kit sold separately

8. All Power America Gas Portable Generator

All Power America APGG4,000

Able to meet your power demands, the All Power America gas powered potable generator has an EPA certified 7 HP 208cc OHV air cooled engine which supplies 4,000-watt peak power and 3300 watt rated power. This generator has an extended run time of 8 hours at half load on a full tank of 4 gallons of unleaded gasoline.

Despite its moderate to high operating noise level, the All Power America generator offers strong performance with a recoil start. Plus, it includes low oil level shutdown and a voltage switch equipped for full power operation; although it does not offer eco-mode. While a limited amount, this generator does offer essential receptacles including one AC Duplex 120V Outlet, one 120V/240V Twist-Lock Outlet and a 12V DC.

One of the heaviest units we reviewed at 137 pounds, the All Power America generator does contain a never flat wheel kit to aid with transport.

Pros
  • EPA certified
  • Extended run time
  • Low oil shutoff
  • Voltage switch
  • Never flat wheel kit
Cons
  • Operates with moderate to high loudness
  • Heavy at 137 pounds
  • No inverter for clean power output
  • No eco mode

9. Green-Power America Recoil Start Generator

Green-Power America GPD4,000

Your budget will enjoy the less expensive yet still powerful Green-power America generator. The manual recoil start powers up the 208cc 7 horsepower OHV engine to supply 4,000 starting watts and 3,000 running watts. This generator has an extended running time of up to 8.5 to 12 hours of reliable power at a 50 percent load on a 4-gallon gas tank. The generator offers several necessary receptacles including dual 120-volt AC outlets, a single 120-volt twist lock AC outlet, and one 12-Volt/ 8.3A DC outlet.

Unfortunately, we placed this product in our second to last position for operating loudly, poor quality control with some components arriving broken or damaged and for missing key features such as eco mode. At a heavy 96 pounds, this generator does not include a wheel kit making transport difficult. Also, with no inverter, you risk running your more sensitive electronics. Finally, you’ll need to monitor oil usage more closely as this model does not employ a low oil shutoff.

Pros
  • Less expensive
  • Powerful 7 horsepower OHV engine
  • Extended run time
  • Several necessary receptacles
Cons
  • No wheels for easy transport
  • No inverter for clean power output
  • No low-oil shutoff feature
  • No eco mode
  • Operates loudly
  • Poor quality control

10. Goplus 4,000 Watt Gasoline Generator

Goplus 4,000 Watt Gasoline Portable Generator

With its ability to run for up to 9 hours on a 100% load on nearly a full 4-gallon fuel tank, the Goplus gasoline portable generator earns its place on our list. This 4,000 watt generator employs a 208cc engine with a forced air cooling system to prevent overheating. The control panel includes status lights to quickly access operations.

We placed the Goplus generator last on our list for lacking quality control, its moderately loud operation, and for lacking helpful and important features such as an inverter for clean power output, an eco-mode for fuel efficiency and an engine saving low oil shutoff. Plus, at 91 pounds, this generator does not offer a wheel kit. However, it does have a handle incorporated into its design.

Pros
  • Extended run time
  • Powerful engine with cooling system
  • Handle to aid with transport
Cons
  • No wheel kit included
  • No inverter for clean power output
  • No low oil shutoff
  • No eco mode
  • Moderately loud operation
  • Lacking quality control

Buyer’s Guide

Hopefully our reviews along with our pros and cons list have helped you to decide which 4,000-watt portable generator you need. Before you make an investment in a particular product, take a quick moment to consider certain important factors that make or break a high-quality generator.

When you’re deciding on a generator, it’s important to have the ability to run it for an extended amount of time since you’ll most likely need to use it for a long period. Several of the generators we reviewed ran for more than eight hours on a single tank of fuel. Also, you’ll save on costs if you purchase a generator with an eco-mode function. On eco-mode, the generator meets the exact demands of your output needs without overproducing and wasting fuel.

Another vital component to look for is an inverter. An inverter makes sure only clean power output reaches your phones, tablets, laptops and other sensitive appliances. Without an inverter, you risk damaging these electronics.

Also, you may want to make sure your next generator has a low oil indicator or better yet, a low oil shutoff. Generators need frequent oil changes. Remembering to check the oil may not always be on the top of your mind. This simple helpful feature can save your generator from severe engine damage.

All gasoline or propane powered generators produce noise. Save your hearing and perhaps nasty looks from your neighbors or nearby campers by checking into the noise level before you purchase your next generator. Most of the products we reviewed emitted a moderate level and mostly acceptable level of noise. Any generator that operates loudly should be avoided.

Sportsman GEN4000DF

Image credit: Sportsman GEN4000DF 3500 Running Watts/4000 Starting Watts Dual Fuel Powered Portable Generator, Amazon

Finally, we must discuss portability. 4,000-watt generators are heavy-duty machines with the emphasis on heavy. Most of the products we reviewed on our top ten list average around a hundred pounds. Even the lightest models we featured weigh a considerable amount. Wheels make an enormous difference in your ability to transport your generator from storage to where you intend to operate it and back again. Be aware that wheels are not a given on most 4,000-watt portable generators. In many cases, you’ll need to make a separate purchase for a wheel kit.

Conclusion

The Champion 100302 RV Inverter Generator is our top pick for the best overall 4,000-watt portable generator. With an innovative open frame inverter design, this generator performs well and offers an eco-mode, extended running time and clean power output. It includes helpful and convenient features such as a quick touch panel, a low oil shut-off sensor and a reliable recoil start. Plus, the Champion is parallel ready and affordable. Its only drawbacks are that you will need to purchase the parallel kit and the wheel kit separately. Also, this generator operates at a moderate noise level.

The DuroStar DS4,000S Gas Powered Portable Generator is our choice for the best value. The DuroStar has a powerful 7-horsepower gas engine and comes with important features such as a fuel gauge, a low-oil shutoff and a variety of outlet options on its power panel. However, what you save in price, you lack in an inverter for clean power output, an eco-mode for better fuel efficiency and wheels for transport. Additionally, the separately sold wheel kit may be difficult to install and this generator produces a moderate noise level during operation.

The Pulsar PG4,000iSR Portable Gas-Powered Generator is our premium choice. This generator performs well with an extended operation, an inverter for clean power output and an electric push start. Plus, the Pulsar comes with parallel capability, several outlet choices and a remote control for conveniently operating this generator from a distance. Additionally, this generator is easy to maneuver and store. And, it’s C.A.R.B approved and compliant in all 50 states. The Pulsar is more expensive than other products on our list. This generator does not include an eco-mode, needs a break-in period and makes a whiny noise when operating at full load.

Hopefully, our useful reviews, our factual pros and cons list and our helpful buyer’s guide have helped you make informed choice for your next purchase. With the right 4,000-watt portable generator to meet your energy requirements and the ability to transport it to where you need it, you can power up your devices, work your appliances and run your heating and cooling system with confidence.


Featured Image Credit By: WEN GN400i, amazon

About the Author Adam Harris

Hi there! My name is Adam and I write for HealthyHandyman. I have a great passion for writing about everything related to tools, home improvement, and DIY. In my spare time, I'm either fishing, playing the guitar, or spending quality time with my beloved wife. You'll also often find me in my workshop working on some new project!