13 Best 4000 Watt Generators That Are Very Quiet & Efficient in 2021

 Since there are so many 4000 Watt generators on the market, it can be hard to choose one that is fit for your needs. 

Before you buy a generator, you have to keep a number of factors into consideration. In doing so, you make sure that you only get your hands on the perfect 4000 Watt generator.

In this guide, we have discussed all these features to help you choose the  4000 Watt generator for your requirements.

For dummies, Read first: What Size Generator Do I Need?

Best 4000 Watt Generator 2021:

Here are our top 4000 Watt Generators in 2021

Westinghouse iGen4500
10 [Editors Pick]
Champion Power Equipment 100302
Pulsar 4000W Remote Start Generator
Westinghouse iGen4200
Honda Eu7000is
WEN GN400i
WEN 56475 4750-Watt Portable Generator
DuroStar DS4000S9
Duromax XP4400E9
Firman P03601
Briggs & Stratton 30676
Sportsman GEN4000DF
Generac 7678 GP3600 Portable Generator

Learn more: Best 3000-Watt Generator

1. Westinghouse iGen4500:

Why we like it:

  • The Westinghouse generator is on our list because it is very powerful yet quiet.
  • Can use in your RV without getting disturbed by the constant noise, this is the one.
  • Moreover, it is a gas-powered model that is easily portable.
✅Can go up to 4500 starting Watts❌Heavier than other options
✅Normally runs at 3700 Watts
✅Quietest 4000 watt generator in this range

2. Champion Power Equipment 100302:

Why we like it:

  • The generator has a 244cc Champion OHV engine, which is quite reliable, considering it comes from a reputed company.
  • The fuel tank capacity is up to 2.9 gallons, allowing the generator to remain functional for a long duration.
  • Although it’s powerful and suitable for long-term use, this 4000-watt generator does not make a lot of noise.
✅Only makes 64 dBA❌Only has two 120V outlets
✅Comes with a three-year limited warranty
✅Has a long run time

3.Pulsar 4000W Remote Start Generator

Why we like it:

  • Get a lot of advantages from a portable option.
  • It can be used as a backup for when the power is out or in an RV for traveling across the country.
  • It has an OHV engine that creates 3500 watts of continuous power that goes up to 4000 watts.
✅Has a moderate noise production❌Does not have an LCD display
✅Durable build
✅Suitable for camping

4.Westinghouse iGen4200

Why we like it:

  • The Westinghouse generator is suitable for versatile uses.
  • Additionally, it can be used for backup or recreational stuff.
  • It goes up to 4200 watts, which is higher than the other generators mentioned on our list.
✅Has a high power❌Heavy
✅Can be used for different things
✅Has an electric start button

5: Honda Eu7000is

Why we like it:

  • Honda is a trustworthy company that people have bought from for years.
  • This generator from them is a wonderful option for anyone looking for a 4000-watt generator for their RV.
  • The Honda 4000 watt RV generator can also be used for camping and outdoor events.
  • It has a fuel capacity of 5.1 gallons, which is more than the other generators on our list.
✅Has a large fuel capacity❌No LCD
✅Is durable

6. WEN GN400i

Why we like it:

  • Amazing quality and specifications of their generator.
  • The generator is a lightweight pick for people who want something convenient that they can carry around with ease.
  • As compared to other generators, it weighs 30% lesser, making it easier for you to transport it to different locations.
✅Is lightweight❌Has a small tank size
✅Runs at a peak of 4000 watts
✅Can be used for small events

7. WEN 56475 4750-Watt Portable Generator

Why we like it:

  • Here we have another generator from Wen that gets the job done without making a lot of noise.
  • It has digital readouts that let you monitor the amount of fuel left in the generator.
  • It also allows you to schedule the maintenance sessions of the generator accordingly.
✅Is easily portable❌Durability concerns
✅Has digital readouts
✅Electric start makes it easier to use

8. DuroStar DS4000S

Why we like it:

  • The DuroStar generator has a lot of punch. Thus, you will be able to use it for bigger functions and occasions too.
  • Additionally, it has a 3.96-gallon tank. Therefore, it will run for a long time.
  • The generator is easily transported around, thanks to the handles.
✅Versatile usage❌Slightly noisier
✅Extended duration of running
✅Automatic shutdown in low oil situations

9. Duromax XP4400E

Why we like it:

  • The Duromax generator has a powerful engine that will offer impressive performance in terms of running time.
  • You can use this generator for outdoor activities as well as indoor things.
  • It has a tank capacity of 3.96 gallons, which is large enough for multiple uses.
✅Has a sufficient capacity❌Is quite heavy
✅Runs for a long time❌Cannot charge electronics like computers and phones
✅CARB compliant

10. Firman P03601

Why we like it:

  • W it’s a viable portable option for people with different power needs.
  • You can keep it in your RV or use it at camping sites.
  • Along with powering electric tools, this generator is also useful for times when there’s a power outage.
✅Has a long run time❌Does not come with wheels
✅Many accessories
✅Starts with a remote

11. Briggs & Stratton 30676

Why we like it:

  • Briggs & Stratton has always been known as a company you can trust, especially when it comes to performance.
  • This generator has a multi-featured control panel that lets you use the machine effectively.
  • Moreover, the Briggs & Stratton generator is backed by a two-year warranty.
✅Small enough to be easily portable❌Noisy
✅Has a control panel
✅14 hours of run time

12. Sportsman GEN4000DF

Why we like it:

  • We like this 400 watt RV generator because it is a perfect pick for people who want a flexible option.
  • You can use it for outdoor activities, such as camping, or for power outages.
  • Along with gas, you can also run this generator on propane.
✅Suitable for indoor and outdoor activities❌Does not have a wheel kit
✅Runs for up to 10 hours
✅Has a peak of 4000 watts

13. Generac 7678 GP3600 Portable Generator

Why we like it:

  • Generator for people who want something with a higher capacity.
  • Since it has an OHV engine, you can expect the engine’s life to be longer.
✅Durable❌Not an electric start
✅Suitable for versatile usage
✅The fuel tank has a large capacity


With that, we have come to the end of our 4000-watt generator reviews. In this guide, we talked about different generators that can be used at home, during a power outage, or for outdoor activities, such as camping and tailgating.

When buying the cheap 4000-watt generator, you have to be careful to ensure that the generator has all the features you require. Hopefully, this guide would have helped you select the great 4000-watt generator for yourself. Let us know in the comments below.

What Can a 4000 Watt Generator Power?

When people buy a 4000w inverter generator, the first thing they want to know is: what can you run on a 4000 watt generator? 4000 watts is a lot of power, so it can be used to run many things around the house.

These include a TV, sump pump, window AC unit, microwave oven, fridge and freezer, DVD player, computer, or a small heating system. If you have a 4000w inverter generator in your RV, you can use it to run anything from a BTU air conditioner and lighting circuits to refrigerators and a TV.

Along with using a 4000-watt generator at home, you can also use it in emergencies, such as hurricanes, if there’s a power outage. Or, you can take it along on your next camping trip.

How Many Amps Does a 4000 Watt Generator Have?

When running at 120V, a 4000 generator translates to 33.3 amps. Some generators with this capacity also have 240V outputs. In that case, you will get 16.6 amps.


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