5 Best Large Inverter Generators For Clean Power

Discover the best large inverter generators for home backup power, running an RV, and more without worrying about your sensitive electronics.

Best large inverter generators top picks

1. Champion 201067 9000 – Best large inverter generator for home backup power, RVs, and more
2. Predator 9500 (9500 peak watts) (67 dBA)
3. Duromax XP9000iH – Best large dual fuel inverter generator
4. Honda EU7000iS – Quietest large inverter generator (7000 peak watts) (52 dBA)
5. Westinghouse iGen4500 – Best not so large inverter generator (4500 peak watts) (52 dBA)

Since large is somewhat subjective I also included the Westinghouse iGen4500 for people who don’t need as much power but still want a good inverter generator.

Additionally, keep in mind that there is no perfect ranking for everyone. Models lower on the list can be better for your personal needs and preferences.

How we selected our top picks

Our experts spent a lot of time looking at and comparing all the different important factors of the best large inverter generators.

Some of the things that were taken into consideration when making our selection include:

• Power capacity, run time, outlets, portability, noise levels, etc.
• User reviews
• Anecdotal reviews from experts
• Price
• Brand trustability and reputation
• The performance categories below

If a pick seems interesting click it to see the online prices.

*Compared to similar generators and sometimes based on customer input

5 Best large inverter generators reviews

People who know what they want in their large inverter generator could use the list of top picks to make a choice.

That being said, you will likely find it easier to decide on the best model for your personal situation with the in-depth reviews below.

1. Champion 201067 9000 – Best large inverter generator

Our top pick for the best large inverter generator is the Champion 201067 9000 thanks to the combination of solid features, reliability, and reasonable price.

With 9000 starting watts and 7250 watts you have enough clean THD inverter power to run most big devices or just a lot of small to medium electronics.

Additionally, the 50 amp outlet makes it easier to connect the Champion 201067 9000 to your house.

This in combination with the reliability reputation also makes it a great inverter generator for home backup power in power outages.

Even if this option would cost a lot it would be a great inverter generator for the money. However, the Champion 201067 9000 is very budget-friendly too.

The main downside of the Champion 201067 9000 you do want to keep in mind is that the 10.5 hours of run time at 25% load is below average.

You may prefer one of the other good large inverter generators with a longer run time for something like running a big air conditioning system overnight.

That being said, this does not stop many people from giving the Champion 201067 9000 the top rating and this generator from deserving the top pick spot.

2. Predator 9500 (9500 peak watts) (67 dBA)

The Predator 9500 is a great 9500 peak watt inverter with a relatively quiet operation but there are also reasons that it is not the number one spot.

First of all, the biggest capacity outlet of the Predator 9500 is “only” 30 amps. This is still enough for many appliances and tools.

However, it also makes this large inverter less suited for home backup power in terms of connection convenience and the watts you can get out of one outlet.

Additionally, while there are definitely customers with different experiences, Predator generators generally do not have the best reputation for durability and reliability.

The short warranties are also not that promising in this area.

That being said, the Predator 9500 could still be worth the money for people who have enough with a 30 amp outlet and value quiet operation.

For example, for things like RVs, camping, running power tools, and food trucks, the Predator 9500 could be the right option.

This is the most powerful option on this list too although it is not quite the largest inverter generator on the market.

3. Duromax XP9000iH – Best large dual fuel inverter generator

The Duromax XP9000iH is our top pick for the best large dual fuel inverter generator with as the name implies, 9000 starting watts of power.

One first thing you do need to know is that you may need to use multiple outlets to get all these watts since the DuroMax XP9000iH does not have a 50 amp outlet.

Additionally, there are some cases where customers initially get a generator that does not work as desired or experience early wear and tear.

When these issues are within the warranty period they tend to get resolved. However, during something like a power outage you likely prefer something you can rely on.

These potential downsides do need to be mentioned but the DuroMax XP9000iH still gets a spot on the list of the best large inverter generators for a reason.

Its dual fuel feature allows you to run on propane too which can be helpful in situations and areas where gasoline is not as convenient to get.

For example, because propane stores longer than gasoline, you may still like the DuroMax XP9000iH for home backup power in certain areas or off-grid living.

Another impressive detail of this big inverter generator is the run time.

Running for 20 hours on a full gasoline tank at 25% load should be more than enough to run an (RV) AC overnight so you can get a good night of sleep.

4. Honda EU7000iS – Quietest large inverter generator

The other models on this list are relatively quiet compared to other big portable generators but it is clear that the Honda EU7000iS is in its own decibel level league.

More specifically, this 7000 watt generator is rated for 52 to 58 dBA at 25% to 100% load (typically measured at 23 feet aka 7 meters away).

Considering a normal conversation is about 60 decibels, it becomes clear that the Honda EU7000iS is great for things like (RV) camping, food trucks, and events.

However, an important detail that will turn many people away from this large inverter generator is the high price tag.

Honda generators do have a reputation for quality and the Honda EU7000iS makes usage very convenient but at some point, the investment required just becomes too big.

As the happy customer reviews imply, this could still be the best large inverter generator for you.

At the same time, the lack of a 50 amp outlet and a few cases of technical issues do make it clear that the Honda EU7000iS is for certain specific needs, preferences, and budgets.

If you don’t need the full 7000 starting watts but do like silent operation, you also consider one of the more budget-friendly quietest 30 amp generators.

5. Westinghouse iGen4500 – Best not so large inverter generator

This selection of top picks focuses on inverter generators that are large compared to all portable models available.

However, because there will also be people that don’t need the full 7000+ starting watts, I also included the Westinghouse iGen4500 which offers a nice 4500 starting watts.

4500 watt generators can still run things like certain 15k BTU window ACs, table saws, or 1 HP air compressors.

If this sounds like enough clean THD inverter power, the Westinghouse iGen4500 is basically the best option available.

There are a few exceptional mentions of a challenging oil fill design and that the portability is not ideal with the small wheels.

However, these are only tiny downsides when you consider the quality features and reasonable price of the Westinghouse iGen4500.

For example, the 18 hours of run time on a full tank of gas at 25% load is useful for purposes like running an RV air conditioner overnight or just having fewer refuel sessions.

Additionally, the 52 dBA noise rating is still impressive even though the Westinghouse iGen4500 does offer less power than the Honda EU7000iS.

In short, if 4500 peak watts and 3700 running watts are enough for your needs, you will likely prefer the Westinghouse iGen4500 even though it is not the largest inverter generator on the list.

What is the best large inverter generator?

Our top rated pick for the best large inverter generator is the Champion 201067 9000 with 9000 starting watts, other solid features, and a reasonable price.

If this sounds too big for your needs you can also go for something like the more medium-sized Westinghouse iGen4500.