Best Generac Generator Reviews

Updated October 29, 2020

Generac is one of the top manufacturers of generators for both home and travel. With so many different models available, it’s likely that Generac has a product that fits your needs.

Regardless of how much power you need or what type of generator you are looking for, there’s a good chance that Generac home generators have an option for you.

Since Generac has so many generators available, it can be difficult to determine exactly which one you should buy. We’ve rounded up some of our favorite Generac generators currently on the market, as well as a buying guide to help you through the shopping process.

Best Generac Generators

1 Generac 6866 iQ2000 Gas Powered Inverter Generator Generac iQ2000 Generator
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Best For Low Budgets
2Generac GP2200i Generator
Generac 7117 GP2200i 2200 Watt Portable Inverter Generator
Best For Low Budgets
Generac GP2200i Generator
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3 Generac - GP3000i PowerRush Super Quiet Inverter Generator Generac GP3000i Generator
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4 Generac - GP3500iO Open Frame RV Ready Inverter Generator
Best Overall
Generac GP3500iO Generator
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Best For Higher Budgets
5Generac 7043 Home Standby Generator
Generac 7043 Home Standby Generator 200 Amp Transfer Switch
Best For Higher Budgets
Generac 7043 Home Standby Generator
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6 Generac - 5939 GP5500 Running Watts Gas Powered Portable Generator Generac 5939 GP5500 Gas Generator
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7 Generac - 6827 XC8000E 8,000 Running Watts_10,000 Starting Watts Gas Generator Generac 6827 XC8000E Gas Generator
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1. Generac iQ2000 Generator

  • 7.7-hour runtime at 25% load
  • 1.06 gal fuel capacity
  • 2.85 gal/hour fuel consumption
  • Weighs 46.2 lbs.

Generac claims that the iQ2000 is quieter, smarter, and more portable than Honda inverters. Designed for outdoor recreational use, it only weighs 46.2 lbs., allowing you to enjoy reliable, clean power on the go. It can run for 7.7 hours at 25% load. 

It also has a LED dashboard that lets you easily monitor the unit’s operating status such as run-time and wattage use. You can toggle between three modes: Turbo, Standard, and Economy. With its user-friendly power dial, you can select the mode that suits your power needs. It offers an automatic low oil shut-off and overload protection as extra safety measures.


20 x 12.6 inches
Power Source:
Duplex 120V 20A


  • Runs for 7.7 hours at 25% load
  • CARB-compliant
  • Smart LED dashboard
  • Simple, easy-to-use controls


  • Expensive
  • Some modes are a little loud

2. Generac GP2200i Generator

  • Compact design, ideal for camping and outdoor activities.
  • Produces 1700 running watts (2200 starting watts). 
  • Economy mode maximises fuel economy.
  • Provides stable power for sensitive electronics.
Best For Low Budgets
Generac 7117 GP2200i 2200 Watt Portable Inverter Generator

This is a very portable inverter generator, with a compact design and built-in carry handle. It produces up to 2200 starting watts and 1700 running watts and runs on a 1.2 gallon fuel tank. 

A full tank will give you up to 10.75 hours of runtime at 25% so this is an efficient option for camping and outdoor activities or to power the essentials in your home during a power outage. 

The output is stable enough for sensitive electronics, and there’s an Economy mode which helps to reduce fuel consumption and noise. If you need more power, you can purchase a parallel kit to connect a second generator. 

This generator is easy to use, with an off/run/choke dial, though there’s no electric start. It also has a variety of outlets, including a USB port. The manufacturer doesn’t provide any decibel readings, but other users report that operation is quiet.


19 x 11 x 17 inches
2200W peak watts
2200W peak watts / 1700W running watts
Power Source:


  • Up to 10.75 runtime at 25% load from the 1.2 gallon fuel tank.
  • USB port for tablets, cell phones and other gadgets.
  • Can be connected to another inverter for increased output.
  • 2 year limited warranty.


  • No electric start.
  • No noise level information available from the manufacturer.

3. Generac GP3000i Generator

  • Clean power
  • Parallel ready
  • Ultra-portable design
  • 50% more starting capacity

Measuring 22.20”x13.30”x18.40”, Generac’s inverter generator is lightweight, compact, and has built-in handles, making it ultra-portable. Its 149cc engine supplies a running wattage of 2300W. 

It can run for 4.5 hours at 50% of its rated load. Equipped with a quiet inverter power, this small marine generator can provide reliable performance with minimal side emissions. 

True Power Technology enables it to deliver clean, stable power, which makes it convenient for charging sensitive electronics such as laptops and smartphones. 

Since it comes with USB ports, you can plug your mobile devices directly into the generator. Best of all, this generator is parallel ready—you can connect it to a similar unit to double its power.


22.20 x 13.30 x 18.40 inches
120 V
3000 starting Watts, 2300 running Watts
Noise Level:
60 Hz


  • Quiet operation
  • Easy to use
  • Parallel ready
  • Compact and lightweight


  • Limited fuel capacity
  • Short run time

4. Generac GP3500iO Generator

  • This generator has 3500 starting watts and 3000 running watts. 
  • It has two standard household outlets, a twist lock outlet, USB ports, and parallel connectors. 
  • This is an inverter generator that produces clean power for sensitive electronics. 
  • It has an open frame design with a control panel that’s simple and easy to use.
Best Overall
Generac - GP3500iO Open Frame RV Ready Inverter Generator

The Generac GP3500iO is an excellent portable generator that is perfect for RV travel. Since it is an inverter generator, it produces clean electricity that you can use with your favorite electronics.

With standard and twist-lock outlets as well as USB ports, you can connect many different types of devices to it. PowerRush technology increases the starting wattage to make this generator more powerful despite its small size.

This generator is also very quiet, so it’s not disruptive to have in your RV. It has a lightweight frame that makes it very easy to move around. If you’d like to connect it to another generator, it’s very easy to do so using a parallel connector.


19.3 x 16.9 x 16.4 inches
3500 starting, 3000 running


  • This generator uses Generac’s PowerRush technology, which increases the starting power level for more efficiency.
  • The inverter technology makes this generator very quiet.
  • The open frame design is lightweight and portable, making it ideal for travel.
  • It has many different kinds of outlets, which makes it very versatile.


  • This generator may not have enough power for large electronics, although you can use a parallel connector and another generator to boost its power.

5. Generac 7043 Home Standby Generator

  • Produces 19,500W running watts (22,000W peak watts).
  • Durable aluminum enclosure with removable sides for easy maintenance.
  • Clear LCD display to monitor battery status and maintenance intervals.
  • Can connect to a propane or natural gas supply.
Best For Higher Budgets
Generac 7043 Home Standby Generator 200 Amp Transfer Switch

With a running watts output of 19,500W, this powerful generator can power all of the essentials in your home. The THD (total harmonic distortion) of less than 5% means it’s going to give you clean power for any sensitive devices such as televisions and laptops. 

A durable aluminium enclosure ensures it withstands all weather conditions, and if there’s an issue such as a storm whilst you’re away from home, you can monitor the status of your generator wherever you are in the world. We like the fact that this generator is supplied with a 200amp transfer switch, but there’s no battery included.


48 x 25 x 29 inches
19,500W running watts
Noise Level:
19,500W running watts / 22,000W peak watts
Power Source:
Propane or Gasoline


  • Includes a 200 amp whole house smart transfer switch.
  • Suitable for running sensitive electronics and appliances.
  • Mobile link remote monitoring to check the status of your generator.
  • 5-year limited warranty.


  • Does not include battery (sold separately).
  • Warranty has some exclusions.

6. Generac 5939 GP5500 Gas Generator

  • This generator has 6875 starting surge watts and 5500 running watts.
  • The 6.7 gallon fuel tank can run for up to 10 hours at half capacity. 
  • It has a durable Generac 389 cc OHV engine. 
  • The exterior has a durable steel cage with wheels for protection and portability.

This portable generator from Generac provides a nice balance of power and compact design. It has 5500 running watts, which can power multiple appliances.

The OHV engine has splash lubrication and an automatic low oil shutdown, which helps to make it more durable. This gasoline powered generator can run for a full 10 hours at a 50 percent load, and the meter on the outside will alert you if the generator is in need of any maintenance.

This generator has a steel roll cage on the outside with a folding handle as well as large, durable wheels. This makes it fairly easy to move around, even though it is quite heavy.

All of the outlets are covered and use circuit breakers for your protection as well.


28.75 x 26.75 x 25 inches
6875 starting, 5500 running
Power Source:


  • This generator has a very long run time of up to 10 hours.
  • Safety features like low oil shutdown and covered outlets with circuit breakers protect both you and the engine.
  • The wheels and an added folding handle make this generator extra portable.
  • A muffler helps to keep this generator relatively quiet.


  • It doesn’t meet California’s strict emissions standards.

7. Generac 6827 XC8000E Gas Generator

  • Has 8,000 running watts and 10,000 starting watts.
  • The powerful G-force engine uses an electric start. 
  • It’s protected with a steel frame and has wheels attached for portability. 
  • It has a total of six outlets protected by circuit breakers.

This gas generator from Generac is tough and provides all the power you need for an outdoor work site. It boasts 8,000 running watts, with a full panel of outlets that includes four standard outlets and two twist lock outlets.

This generator has an electric start, with a control panel that makes it very easy to use. Idle control helps to preserve the life of the engine.

Although this generator is on the larger side for a portable model, it comes with a wheel kit already attached as well as a folding handle. A steel tube on the exterior protects the frame, and the fuel tank is also protected to resist damage from impact. This model meets CARB emission standards.


34.3 x 28.6 x 32.5 inches
10,000 starting, 8,000 running
Power Source:


  • This gas generator has enough power to run several appliances at once.
  • Wheels and a folding handle make it easy to move around, despite its larger size.
  • The outlets are covered and protected by circuit breakers for safety.
  • It is completely CARB compliant.


  • It does not offer clean power for sensitive electronics.

Generac Generator Buying Guide

Selecting a generator can be challenging, especially when you’re shopping with a brand like Generac that has so many different models available. Here’s what to consider when selecting your new generator. 

Inverter Or Traditional

One of the most important decisions to make when selecting your generator is whether you want an inverter generator or a traditional generator. Generac makes both types of generators, so it comes down to personal preferences and what is most important to you. 

A standard generator creates AC power, while an inverter generator converts this AC power to DC power and then back again to AC power. 

What this does is reduce the harmonic distortion in the electricity, which makes it safe to use with devices like smartphones and computers. This electricity is called ‘clean’ power, and many devices require it to run smoothly. 

Without ‘clean’ power, you may damage the device. 

There are a few other advantages to using an inverter generator. The first is that they are much quieter than standard generators. 

Generators can be very loud and disruptive, but inverter generators produce less noise because they are able to maintain a steady, controlled power output. 

Inverter generators are also much more energy efficient, which will make your fuel last much longer and is better for the environment. That’s why most efficient generators are usually inverter generators. 

However, Generac inverter generators are typically more expensive than standard generators because of these advantages. If you are looking to save money, a standard generator may be a better choice for you. 

Additionally, standard generators produce much more raw power, so if your main concern is powering very large appliances, you may want to consider investing in a standard generator. 


Another key factor to consider when selecting your generator is the type of fuel that it requires. The type of fuel your generator uses will determine its efficiency and its effect on the environment. 

Additionally, some types of fuel are more affordable and easier to find than others. Here are the types of fuel that Generac generators use, as well as their advantages and disadvantages. 

Generac Propane Generator

Propane generators are very popular because they are more environmentally friendly than diesel generators. They produce lower emissions and they run much more efficiently as well. 

Propane generators also tend to be much quieter than diesel generators. 

Propane is sold in tanks at convenience and home improvement stores, instead of coming directly from a pump. This means you can store it at home and have it on hand for emergencies, which is very convenient. 

However, it is more expensive than diesel, and it is not as widely available. This means it may not be the best choice for those on a budget, or those who are traveling with their generator. 

Generac Natural Gas Generator

Natural gas generators have many of the same advantages as propane generators. They have very low emissions and are relatively good for the environment.

These generators also run very quietly and aren’t disruptive. 

However, there are some downsides to using a natural gas generator. The biggest challenge presented by natural gas generators is that they require a connection to your local natural gas infrastructure. If your city or town does not have this infrastructure in place, you won’t be able to use a natural gas generator. 

This also means that they aren’t a viable option for RV travel. Additionally, natural gas generators can be expensive to set up and maintain, and they typically won’t last as long as a diesel generator. 

Generac Diesel Generator

Diesel generators are one of the most common types of generators, and they are usually the most affordable as well. These generators are very durable and don’t require much maintenance. 

Diesel itself is relatively affordable and easy to find at local gas stations. These generators also typically produce the most raw power. 

The downside of using a diesel generator is that they have higher emissions rates, so they are more harmful for the environment. 

They also tend to be much louder than other types of generators because they have such a high power output. Additionally, diesel cannot be stored safely for long periods of time the same way that propane can. 

Generac Dual Fuel Generator

Dual fuel generators provide the advantages of both diesel and propane generators. These generators are capable of running on both fuel types, which means you can use whichever one is most readily available. 

This makes them a great option for those that use generators while on the road. This type of fuel tank may require more maintenance, but these generators are still very durable. 


There are many reasons why you might need an additional power source. Different Generac models are best for specific uses, so it’s important to consider this when shopping for your generator. 


A Generac home generator can serve as an additional source of power for your space. You never know when you might lose power, and having a generator on hand at home will ensure that you can continue to use your appliances. 

This extra power will make all the difference when it comes to keeping your family safe and comfortable in an emergency. 

You may also want to have a generator at home to reduce your reliance on your city’s electrical grid. If you live in a rural area or an area that does not get consistent electricity, having a generator on hand can make your life much easier. 


When you’re traveling by RV, you shouldn’t have to give up the comforts of home. Generac RV generators make it easy to power your electronics when you are on the go. RV generators can power appliances inside your RV as well as smaller electrical tools.

When selecting a generator for your RV, you’ll want to make sure that it is portable enough to carry with you on your travels. Generators can be very heavy, so you’ll want to check the weight and dimensions before making a purchase to ensure that you can comfortably move it and that it will fit into storage. 

You’ll also want to consider the type of fuel your RV generator uses and make sure you will have access to it while you are on the road. Finally, you’ll want to make sure that the generator has the appropriate outlets for your device. 

RVs often need 30A power connections and use twist-lock outlets. Some RVs may even need 240V connections instead of 120V. 


Having a Generac backup generator can give you peace of mind, no matter where you are. If you lose access to your primary power source, a backup generator can give you the extra electricity you need to run your devices. 

Many people even keep a second generator at home to use as a backup if their first generator goes out. 

Since you’ll likely be using a backup generator in an emergency, you’ll want to make sure that it is easy to use and maintain. You’ll also need to make sure you have fuel on hand – this is where propane generators can come in handy. 


When looking at generators, one of the key factors to consider is its power output. This will determine what types of appliances you can use with the generator, and how many appliances you can use at one time. 

Power output for generators is measured in watts. The higher the wattage, the more your generator will be able to power. When shopping for generators, you’ll see the phrases ‘starting watts’ and ‘running watts’. 

The number of starting watts is the maximum power output the generator has, but it will only use this much power to start the generator. 

The number of running watts is the amount of power the generator can produce for an extended period of time, and this is the amount you should consider when deciding which devices to plug into the generator. 

If you’re looking to power all of the appliances in your home, you’ll likely need between 5000 and 7000 watts of power. If you’re only looking to power one or two devices at a time, a smaller 2000 to 4000 watt generator will likely suffice.

You should definitely check out our best 2000 watt inverter generators guide that we wrote for the great selection of 2kw inverter generators.  

RVs generally require about 2000 to 4000 watts as well. When deciding how many watts of power you need, look at your specific devices and consider how much power they each require. 

If they don’t exceed the running wattage of your generator, you will be able to use them. 


Portability is another important factor to consider when selecting a generator. This is particularly important if you plan on using your generator for camping or in your RV. Generators can be incredibly heavy, with some models weighing well over 100 pounds. 

If you purchase a generator that’s too heavy for you to move, it could make traveling very inconvenient. 

Many generators come with wheels attached to an exterior frame, which makes them much easier to move around. Some generators also come with a folding handle, which gives you more leverage when moving it around. 

Generac Portable Generator

Generac has many different portable generator models. Many come with wheel kits already installed, and some of these generators are even light enough to carry with just the handle. 

Generac Standby Generator

Generac standby generators are much larger and are meant for use at home as a backup power source. These generators are not as portable, but can provide much-needed peace of mind at home during a power outage. 


There are a number of other features to look at when selecting a Generac generator for your home or RV. Here’s what else to consider when shopping for these products. 

Generac Automatic Transfer Switch

Some of Generac’s generators use an automatic transfer switch to automatically turn a standby generator on in the event of a power outage. 

The transfer switch detects a loss of power coming from your electrical lines and then automatically activates the generator. If you’re looking to mainly use your generator to manage power outages in your home, then this is a good option. 

Smart Management Module

Generac also has smart management modules on many of their generators. A smart management module is designed to work with the automatic transfer switch to turn the generator on in the event of any kind of power loss. 

The smart management module helps you direct the flow of power, so you can prioritize which appliances you want to receive power in the event of an outage. 

This helps prevent wasted energy and ensures that you’ll have access to your most essential devices in an emergency. 

Noise Level

The noise level is another factor to consider when selecting a generator that is very important. 

Generators can be very noisy and disruptive, but over the years technology has improved and there are many generators available that are quiet. 

Look at the decibel level of the generator – the quietest generators are usually between 45 and 60 dB, which means they won’t overpower a conversation. 

Pricing Range

Generac generators vary in price depending on their size and features. These generators are not the cheapest nor the most expensive options on the market, and they do offer good value for money. Generators are a big investment, so expect to spend anywhere between $300 and $1500 on this purchase.

Frequently Asked Questions

Q: Is Generac a Good Generator?

Generac is a very reliable generator company. They provide a good balance of affordability and quality, with generators that can handle plenty of wear and tear with minimal maintenance. Generac offers a very wide range of options for different uses, and most of their models focus on energy efficiency. Overall, Generac is a brand you can trust as a power source.

Q: Do Generac Generators Have Honda Engines?

Generac generators do not use Honda engines. Generac manufactures their own engines, which are made in Wisconsin.

Q: How Much Does It Cost To Install a Generac Automatic Generator?

Generac automatic generators can cost between $4000 and $5000 to power your entire home. You may also need to buy a separate transfer switch, which can cost upwards of $500. If you choose not to install these devices yourself, you’ll also need to pay for an electrician’s services.

Q: Where Are Generac Generators Made?

Generac makes their engines and most of their generator parts at their manufacturing facilities in Wisconsin.

Q: How Long Can a Generac Generator Run Continuously?

The amount of time your generator will run for is based on its specific size and fuel tank. Portable generators typically run anywhere between 5 and 12 hours. Larger standby generators have a much longer run time, sometimes as long as an entire week.

Our Verdict

Generac is an incredibly reliable brand that you can trust for many different types of generator products, whether you’re looking for a small generator for travel or a large standby generator that you can rely on at home.

There are many different factors to consider when selecting your Generac generator, and we specifically recommend the models mentioned in this article.