Best large inverter generators for heavy use

Some gadgets in your home, shop, construction site, etc. — from air conditioners and heaters to hair blowers and more — require powerful inverter generators that provide more power to function as they should.

That takes the smallest inverter generators out of the equation and means that you have to look for the best large inverter generator.

This article lists the top three large inverter generators on the market and we’ve put them together to help you find the best model for your energy-hungry appliances.

Champion Power Equipment 100519 6250-Watt Open Frame Inverter with Quiet Technology

Along the way, you’ll find a guide to the features to consider especially when comparing large inverter generators.

First, there are the reviews of the best higher power inverter generators, with the pros and cons of each brand.

Top 3 biggest inverter generators reviews

We filtered through dozens of available models and found the following units more impressive than any other product.

To be clear, we were particularly interested in products whose wattage is high enough to run most power-hungry appliances in an emergency.

These are the three champions:

1.  Honda Inverter Generator (Electronic Fuel Injection) Eu7000is- best 5000 watt inverter generator

With a maximum power of 7000 W and a continuous power of 5500 W, this is the champion of champions and the reference for those who own a large number of devices with an insatiable appetite for energy.

The elegant engineering of this tool makes it extremely popular and Honda deserves congratulations for getting everything right with this powerful inverter generator.

Your neighbors will love the EU7000iS for its quietness (52 – 58 dB), while you’ll love its excellent fuel efficiency (you’ll get a whopping 18 hours with the 5.1-gallon tank).

And thanks to the electronic fuel injection, there is little maintenance waiting for you here.

We also thought highly of the easily folding handles plus wheels (for compact transport and storage), as well as the life-saving electric starter.

What also makes it a star is the i-Monitor system (it stays up-to-date on running hours, RPM, power and even diagnostic information) and the fact that it’s parallel ready (use the optional parallel kit).

In other words, you have the perfect unit for your backup power needs, RVs, outdoor fun and more.


  • Ultra silent generator.
  • Easy start at the push of a button.
  • Low maintenance


  • Special price.
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2. Champion DH Series 6250-Watt Open Frame Inverter Generator with Quiet Technology

Gone are the days when Honda and other big names like Yamaha were the options.

Champion Power Equipment 100519 6250-Watt Open Frame Inverter with Quiet Technology

In fact, some of the best larger portable inverter generators come from some of the lesser known brands.

Champion is one such company and has the beautiful DH Series Open Frame Inverter Generator (6250 watts starting and 5000 nominal watts) that impresses.

This got everyone talking when it first debuted on the market and remains an undisputed favorite among heavy users thanks to its innovative construction.

It is not only 50% quieter (69 dB), but also 20% lighter compared to comparable 5000 watt generators.

And with a longer runtime (12 1/2 hours at 25% load), a more economical power save mode and convenient cold-start technology (for quick starts in cold weather), you’ve found yourself a truly precious gem.

Also easily monitor current voltage, frequency and even operating hours via the Intelligauge.

Plus, the folding handle and never-flat tires make storage and maneuvering a breeze.


  • Larger 4 liter fuel tank.
  • Very well placed touch controls.
  • Excellent warranty conditions.


  • It cannot be parallel.
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3.  Westinghouse open frame iGen4500DF Portable Inverter Generator

Arguably the best inverter generator for power tools, this relatively large inverter has some cool features, the main one being that it accepts both gas and propane.

Speaking of specs, 3500 running watts (and 4200 starting watts) is more than power tools need.

Other essential features that mark it as site-ready are the heavy-duty steel fuel tank combined with the heavy-duty steel frame.

The move won’t bother you either, as it weighs between 20 and 40 pounds. makes it lighter than most of the equally rated competition.

Like the rest, this OSHA-compliant generator is ultra-quiet and fuel-efficient (it gets 22 hours of run time on its 2.6-gallon gas tank).

Efficiency mode saves even more energy, while automatic low oil shutdown and overload protection ensure your safety.

All important performance information is displayed in real time on the digital display thanks to the integrated data center.

Overall, we think this is potentially a boon to DIYers or even store owners.


  • Easy to set up and use.
  • Amazing display.
  • Solidly built


  • No handles or wheels.
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Below is a dedicated buying guide so you know what to look for when shopping for the best large inverter generator.

Best larger inverter generators buying guide

As mentioned above, there are a few influencing factors that can really influence your purchase decision when it comes to the best large inverter generator.

Let’s quickly run through a few so that you can get a clear idea of which inverter model to buy for the most power-consuming devices.

    What is the best wattage to select?

Of course, the most important decision to make is to select the right size high voltage converter generator and it boils down to these questions:

  1. How many devices do you need to power?
  2. The maximum wattage (when you add up the power consumption of all your devices). As always with inverter generators, you need to consider both peak and running watts.
  3. How long you normally want the generator to run when it is in use. As a general rule of thumb, a longer run time (with a full tank) is preferable as there is no refueling every few hours, which can be quite uncomfortable.

    Size of the unit

In fact, these implements are generally huge compared to your typical inverter generator. But you don’t want it that big, because how do you get to your tailgate party?

There are features that can help with movement even more, such as wheels and folding handles, and it’s a good idea to select a device with such.

       Steer clear of too loud models

The decibel curve increases with production because monster models generally require larger motors.

There are exceptions, however, and manufacturers are finding ways to include noise canceling features in many of these generators.

You should limit your search for the best large inverter generator to brands with special noise reduction technology.

Quieter Inverter Generator Reviews

  More factors to keep in mind for you

There are also several other extras, such as the type of outlets you think will best suit your needs and what you’ll find here:

1.      What fuel source / type do you prefer?

Several options are available, including propane and gasoline, and even hybrid generators (they can run either gas or gasoline).

Each has pros and cons and you should choose the one that best suits your needs.

For example, propane generators are not as efficient as gas generators, although propane burns cleaner than gasoline.

The best propane inverter generators

2.      Unique additions

Most of the best 5000 watt inverter generators have bonuses that add more value.

A fuel gauge (to keep track of the amount of fuel), an instant starting system, overload warning lights and maintenance reminders are just some of the things we have in mind here.

High power inverter generators will always be priced higher because of the cleaner energy.

These great inverter generators are even more expensive, which means you’ll need a bigger budget.

But if you take a moment to think about what these power titans can do, you’ll realize that getting one for your mobile power needs can be a masterstroke.

Dual Fuel Inverter Generator Reviews.

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