7 Best Largest Inverter Generators [2023] – High Wattage Biggest Inverter Generators for Heavy Use

So, what is the biggest inverter generator? How big of an inverter generator do they make? What is the largest dual fuel inverter generator? Read on!

Inverter generators are known for being slightly more expensive than conventional generators, but this is justified because these generators are quieter, more efficient, and last longer than non-inverter counterparts.

Large inverter generators will meet your demands and then some, whether you’re searching for a decent generator to power your RV for road trips or as a backup for home power outages.

While these large generators won’t power everything in you house at the same time, they’ll enough for tailgating, camping vacations or power all most all essential home appliances during emergencies. If you are considering purchasing one of the largest portable inverter generators to meet your high wattage needs, it may be challenging to determine which one to choose from the numerous options available.

We researched some of the largest inverter generator available on the market to assist you in your search. Our reviews are below, along with some important information to find you the best large inverter generator.

You’ll find a range of inverter generators from prominent brands, as well as some less expensive alternatives, in our review of the largest inverter generator made.

We considered a wide range of generators for all types of buyers. Midsized to biggest quiet inverter generator for home, camping, and food trucks will be available, from 5000 watt to 9000-watt inverter generators as well as dual fuel inverter generators.

But, If you are just concern about low THD, have a look at our post about low THD generators.

Top 7 Best Large Inverter Generators – Quick Comparison

Inverter Generators vs. Traditional Generators

Inverter generators have become increasingly popular due to their ability to efficiently convert direct current (DC) power into alternating current (AC) power. With an inverter at the core of their design, these generators offer increased efficiency and quieter operation, making them an excellent choice for a variety of applications, such as camping, RVing, and providing home backup power.

Additionally, they are especially useful for individuals who require a generator that operates quietly and efficiently. Despite their advantages, inverter generators come with some drawbacks, which we will explore below.

Perks of Inverter Generators:

1. Enhanced Efficiency: In comparison to traditional generators, inverter generators exhibit superior efficiency, meaning they consume less fuel while producing the same power output. Consequently, users benefit from reduced fuel costs and a smaller environmental footprint.
2. Quieter Operation: One of the most attractive features of inverter generators is their low noise output. As a result, they are ideal for use in residential areas, parks, and other settings where excessive noise is undesirable.
3. Stable Power Delivery: Inverter generators provide a more stable power output, which is especially advantageous when powering sensitive electronic devices such as laptops, smartphones, and medical equipment.

Challenges with Inverter Generators:

1. Higher Cost: Inverter generators tend to be more expensive than their traditional counterparts, potentially making them cost-prohibitive for some consumers.
2. Limited Capacity: Inverter generators typically possess a smaller capacity compared to traditional generators, potentially restricting the number of appliances or devices they can power simultaneously. This limitation may require users to prioritize the most essential equipment during power outages or while using the generator for recreational purposes.

Highest Wattage Inverter Generators – Detailed Review

1. Champion Power Equipment 100520 8750-Watt Hybrid Open Frame Inverter with Electric Start

The colossal Champion 100520 open frame inverter generator is powered by a 420cc four-stroke engine, providing high performance and low fuel consumption. This immense generator is the largest Champion inverter generator available on the market. Its substantial size offers a starting wattage of 8750 watts and a running power of 7000 watts, making it quite sizeable for an inverter generator.

This huge generator from Champion is 30% quieter and 25% lighter than similar inverter generators. It’s an affordable power solution that uses cold-start technology for a quick start in harsh weather conditions. This generator is among the biggest RV portable inverter generators, featuring a 30 amp outlet.

The engine of this enormous inverter generator generates 8750 starting watts and can operate for up to 10.5 hours at 25% load. Producing only clean power, this highest wattage generator comes with an extensive array of outlets, including a DC automotive-style outlet, a dual USB converter, and battery-charging cables.

If you are looking for the largest champion dual fuel inverter generator, then have a look at Champion 10000/8000-Watt Dual Fuel with 120/240V operation.

2. DuroMax XP9000iH 9000-Watt Hybrid Dual Fuel Inverter Portable Generator with CO Alert

The XP9000iH is the largest digital inverters on the market, making it available for emergency home backup or worksite power. Get clean power for your home electronics like TVs, computers, and other sensitive devices. The immense inverter features a digital control center, enabling you to view power output, load level, and running hours all in one spacious area.

Buy a second XP9000iH and connect it using a parallel kit to create an even more substantial, dual power source, doubling your wattage capacity.

The DuroMax XP9000iH’s dual-fuel technology enables for a 120/240V output, providing excellent power and adaptability. Market’s largest inverter generator, with 9,000 peak watts and 7,600 running watts, is ideal for emergency home power, worksite use, or RV camping.

This biggest portable inverter generator, with a noise level of 68 dBA, can be started using either a conventional recoil start or the electric starter.

3. Briggs & Stratton Q6500 Quiet Power Series Inverter Generator

The Briggs & Stratton Q6500 is a large inverter generator with a peak power of 6500 watts, making it the company’s biggest capacity inverter model. This large low-cost inverter generator is primarily intended for use as a backup power source at home. You may also use this rather large inverter to power your tools, appliances, or electronics at campgrounds, tailgates, and even construction sites.

With its highly efficient 306cc engine, the large Briggs & Stratton Q6500 quiet series inverter generator can provide 6500 watts of starting power and run continuously for up to 14 hours.

The colossal inverter generator, with its extensive features and immense power, is available in a surprisingly compact size. Among the best aspects is the inclusion of a carbon monoxide shutdown safety mechanism, which can potentially be a lifesaver. That’s why this is our choice for the largest inverter generator for home use.

4. BLUETTI AC200MAX Portable Indoor Battery Powered High Wattage Inverter Generator

The AC200MAX has a 2200W pure sine wave inverter (4800W surge) and a 2048Wh high capacity, which may be increased to 6144Wh when used with two B230 battery modules. This is one of the largest inverter generator on the market that is battery powered.  The AC200MAX large power station can handle up to 700W of solar power and 500W of alternating current power.

You may even combine the two sources to get a total charging rate of 1200W. The large B230 battery module may also be charged separately through AC/solar/car. The premium BMS and lithium phosphate battery promise 3500+ life cycles to 80% – approximately 5 times the typical battery cell longevity. One of the few largest power stations with a 30 amp plug for RV.

With the substantial wattage capacity of the battery you can power essential equipment for an extensive duration. As per Bluetti, a CPAP machine may operate for up to 40 hours. The high wattage and surge capacity enable the battery to run devices that conventional power stations struggle to support, such as phones, laptops, TVs, coffee makers, hairdryers, air conditioners, CPAP machines, and microwaves.

The Goal Zero Yeti 6000X, BLUETTI EP500 and the AC200MAX w/ external battery are the best biggest portable power stations ever made.

5. Westinghouse Outdoor Power Equipment iGen4500DFc Dual Fuel Portable Inverter Generator

The Westinghouse iGen4500 Dual Fuel generator is an excellent power for RVs and campers with two air conditioners. This is one of the only midsized inverters on the list.  This fuel-efficient, whisper-quiet generator has 3,700 running watts and 4500 peak watts, a 120V 30A (TT-30R) outlet for RVs and campers, push-button electric start, and a telescopic handle with rear wheels for easy transport.

The iGen4500 Dual Fuel inverter delivers pristine electricity, ensuring the secure operation of sensitive electronic devices such as computers, TVs, tablets, and mobile phones. The iGen4500 Dual Fuel offers remote start functionality, allowing you to initiate the generator from the comfort of your home or RV using a key fob. Additionally, a push-button start is available on the control panel.

The LED display showcases available run time, fuel level, power output, and voltage. Other indicators include electric output, fuel level, overload warning, and low oil alert. This generator is also CARB compliant, adhering to strict emissions standards.

6. Honda Power Equipment EU7000i 7000-Watt Super Quiet Portable Inverter Generator

The Honda EU7000iS has been re-engineered as the Honda EU7000iSNAG with a built-in carbon monoxide (CO) monitoring system that automatically turns down the generator when unsafe CO levels are detected. The EU7000iSNAG biggest Honda inverter generator on the market right now. It is also our choice for the largest quiet inverter generator.

With large 7000 watts and 120/240 V, this generator is suitable for home backup power and big outdoor events. Not only can the EU70is power caravans, food trucks, and outdoor events, but it can also power frequency-sensitive devices like refrigerators, cellphones, computers, and sound equipment.

It is also extremely quiet and fuel efficient. It can run for at least 18 hours on just 5.1 gallons of fuel. It’s an large inverter generator with an easy-to-use electrical start. This large generator is relatively low maintenance and has good fuel efficiency.

By adding a parallel kit, you may increase its output to 11,000 watts (14,000 surge watts), which is large enough to power key home appliances like an AC.

The Champion’s largest open-frame inverter generator is 30% quieter and 25% lighter than similar inverter generators. It’s a low-cost power solution with cold-start technology that provides a speedy start in inclement weather.

7. Yamaha EF6300iSDE Gas Powered Portable Inverter Generator

The Yamaha EF6300iSDE is powered by a large Yamaha MZ360 OHV 4-stroke engine with a displacement of 357cc. This large inverter generator has a running wattage of 5500W and a peak wattage of 6300W, and it offers on 120/240V and gasoline.

This is our last entry for the “what is the biggest inverter generator you can buy?” This large inverter starts up with a simple and attractive electric starter and has a noise level of 58 dBA.

Yamaha’s Smart Throttle is included on this generator. The load-sensing function changes the engine speed to meet the load, resulting in improved fuel efficiency and noise reduction.

The EF6300iSDE has a fuel capacity of 4.5 gallons and can run for up to 13.3 hours on a full tank.

Best Large Inverter Generators – What to Consider?

In the event of a power outage, the biggest inverter generators can provide backup power for essential appliances in whole house or a campground/RV. When it comes to choosing the largest inverter generators for your backup power needs, there are a number of crucial things to consider. The information below will assist you in determining which large inverter unit will give you with enough power, mobility, and convenience.

1. Fuel Type & Capacity

Inverter generators normally run-on gasoline, however dual fuel generators may also run-on propane. This is a significant benefit since it allows you to select the fuel you use based on your specific requirements, such as power output needs, local fuel availability, and the fuel type you have on hand.

The larger the generator’s fuel tank, the longer it will be able to generate gasoline-based power, but the generator’s size will also rise. Gasoline provides more power than propane.

2. Power Output

Wattage should be the most critical factor as you shop Inverter generators, like open-frame generators, are available in a variety of wattage ratings. The power output is proportional to the wattage rating. Higher wattages normally imply larger, more costly units, so here’s how to figure out what size is suitable for you

• Light duty: 2,000 to 3,500 watts – tent camping, tailgating, etc.
• Medium duty: 3,600 to 5,000 watts – RV camping, emergency home use, job site.
• Heavy-duty large generators: 5,000+ watts – powering a essentials in small home, powering a welder.

3. Noise Level

Physical size and weight will be a factor for some. Typical 5000 watt plus large inverter generator can weigh up to 250 lbs. If you are looking for largest portable inverter generator than wheel kit is a must.

4. Recoil & Electric Start

Inverter generators offer various starting methods, such as electric start, recoil cord, or a combination of both. Inverter generators with electric start capabilities house an internal battery that power up the generator instantly. Users can initiate the system by pressing a button on the control panel, utilizing the keyfob, or flipping the switch. Numerous fuel-driven equipment employ the recoil cord, a traditional yet dependable method.

5. Size and Weight

The noise difference between a large inverter and a conventional generator is the most evident. Open-frame generators are extremely noisy, with decibel levels surpassing 100 decibel. Closed-frame inverter generators are frequently in the 50 to 60 dB range. Large Inverter generators with open frame models can go up to 75 decibel.

Best Large Inverter Generator – Conclusion

There are a surprising number of elements to consider while selecting the best biggest inverter generator. You’ll need a generator that can create enough power to meet your requirements while still being portable. We hope that this information assisted you in determining the best model for you depending on your current circumstances.

We would also like to mention some other well know brands like Generac and WEN that make inverter generators. The Generac 7127 IQ3500 is the biggest portable Generac inverter generator out there and WEN DF875iX 8750-Watt is the largest WEN inverter generator.

The Champion Power Equipment 100520 8750-Watt DH Series Open Frame Inverter is recommended for most users. This powerful generator can handle most tasks, such as powering a portable light when camping. It is, nevertheless, both affordable and portable. It contains all of the features you require and none of the ones you do not.

If you need the biggest, the DuroMax XP9000iH 9000-Watt 459cc Dual Fuel Digital Inverter is the one for you. This generator is largest inverter generator available and is safe for sensitive electronics. It generates sufficient power for all type of needs and you can use parallel capability to double the power.

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