Review Generac Generators

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Generac is one of the best-known manufacturers in the generator industry, and for a good reason.

While Generac may not have the name recognition of Honda or Yamaha when it comes to engines, the company has been able to compete on performance at a much lower price over its 60-year history. When you get the best Generac generator, you can be assured that you’re getting a model that will last and offer all of the features you need. In order to help you find the best Generac generator, we looked through the company’s entire lineup and considered a number of important factors. First, we looked at different types of generators – conventional and inverter generators, as well as portable and standby generators. All of these generator types are designed for very different purposes. Within each category, we looked at the rated and maximum power output of each model, the types of fuel it is able to run on, and how long each generator can run for.

We spent tens of hours reading technical specifications from Generac as well as customer reviews about each of their generators to come up with our five favorite Generac models, highlighted in the table below. After that, you’ll find detailed reviews of each generator, complete with pros and cons. Our buying guide covers everything you need to know about choosing the right Generac generator for your needs. Finally, we sum up our three overall favorite generators in Generac’s current lineup. Disclosure: This post may contain affiliate links.

Best Generac Generator

  1. This means that at no cost to you, we may earn a small commission for qualifying purchases.
  2. Last Updated on December 24, 2021 .
  3. Generac Power Systems has been in the business since 1959, giving them plenty of time to develop and perfect their technology and transform their name into a trusted brand.
  4. Their generators are frequently used products across the country, from home standby generators to portable machines.
  5. Generators can be super useful products. Generac power systems are great tools to own in case of emergency power failures due to natural disasters, or even planned outages from construction.
  6. They can also be used in situations where power isn’t readily available, like camping areas and construction sites.
  7. They also provide great customer service. Today, we want to take a look at a few Generac generators to give you an idea of the choices you have within this reliable brand.
  8. After checking out just a few of their options, you can venture on to review more of their products.
  9. Perhaps you’ll even find the one you need below. 1 Generac Generator Reviews1.1 1.
  10. Generac 7117 Gp2200I W 50St1.2 2. Generac 6866 iQ20001.3 3. Generac 6864 Generator.

Generac Generator Reviews

Product weightProduct dimensionWattageVoltage
59.5 Pounds22.2 x 13.3 x 18.4 inches3000120V

Generac 7117 Gp2200I W 50St. Generac 6866 iQ2000. Generac 6864 Generator. 3 Generac for Power. The Generac 7117 Gp2200i is one of a handful of inverter generators designed, made, and sold by the Generac brand. It’s lightweight and compact yet oh-so powerful, allowing you to run all kinds of appliances for up to 10.75 hours! We’ve performed various tests and scoured its features to bring you a well-rounded review of its positives, negatives, specifications, and everything in between.

Let’s start by taking a look at the specs so that you can get a good feel for its capabilities right away. The lightweight design ensures it is easy to maneuver. It comes complete with an economy mode that makes for great fuel economy. It’s fully CARB and EPA compliant, allowing you to use it no matter which state you live in. The compact design is great for storing in places with limited space. The handle is comfortable to make it even easier to lift and carry with you.

Is Generac a reputable brand?

  1. We love that it provides both a USP port and a DC outlet.
  2. The run time is brilliant, especially when you consider the diminutive size of the generator.
  3. The economy mode also works to reduce noise.

Generac for Power

Where can I buy a Generac portable generator?

  • The integrated on/off switch allows for easy operation. You can switch between “Choke,” “Run,” and “Stop.”.
  • It’s fantastic for inexperienced users to get up and running with a powerful generator.
  • It is parallel-ready. However, the kits are sold separately.
  • We noticed it overheats fairly easily when powering with higher loads.
  • Unfortunately, the economy mode doesn’t work well with high loads. It’s not stated that you can use it in RVs.


Product weightProduct dimensionWattageVoltage
214 Pounds27.2 x 27 x 26.5 inches8000 watts

However, plenty of customers have enjoyed using it on camping trips. The number of output ports and the running watts might be too low for hefty users. However, if you haven’t used a generator before, we’d say that it’s plenty to get started. Its running wattage is 100 watts less than its direct competitor. However, we’re very nit-picky here as it’s only a minor difference. There isn’t an electric start. Instead, it’s manual recoil only. There is no data center. The Generac 5940 GP6500 portable generator gives you a lot of power to pull on two wheels.

CSA-approved and CARB compliant, this durable and safe generator is great for your larger power needs. When you need more wattage but prefer the convenience of portability, it can be tough to know where to turn. This Generac model gives you both of those features in one with their 5940 GP6500 product. With 6500 running watts and 8000 starting watts, this gas-powered machine sure does deliver. A convenient handle along with two sturdy wheels lets you take this model anywhere to use at home, on the job site, or during a sizable event.

Quick Comparison – Best Generac Whole House Generator This Year

  1. The 389cc OHV engine is built for the long-term, displaying consistent and reliable power over long periods of time.
  2. With solid construction and durability, you’ll get a lot of use out of this product.
  3. The fuel tank holds 7.2 gallons of gas, which lends 10 hours of run time at a 50% load.

Q. Are Generators from The Generac Quiet?

Q. What Is a Reliable Source to Find the Generac Parts?

  • Safety features shut your machine off when your oil gets too low, protecting both you and your investment.
  • An hour meter lets you easily read your run time, while the covered outlets stay protected while not in use.
  • Size: 28.75 x 26.75 x 25 inches.
  • Weight: 184 pounds. Starting Wattage: 8000. Tank Size: 7.2 gallons.
  • Two 120V outputs, one 240V output. Starts easily on the first pull.
  • Efficient run-time and abilities. Easy to operate and assemble. Capable of powering most appliances in average size homes.

3. Generac GP2200I Portable Inverter Generator

Product weightProduct dimensionWattageVoltage
180 Pounds28.75 x 26.75 x 25 inches5500 Watts120 Volts

Low oil sensor for safe automatic shutoff. Can be loud at times. Does not include USB ports. No remote monitoring. A diesel alternative to the other Generac products we’ve looked at, the 6864 model offers a moderate level of power for just the right amount you need for a variety of emergencies, projects, and situations. The Generac 6864 portable generator uses a diesel-powered engine for efficient and reliable power. This engine is built to perform, using industrial-grade materials and air-cooled technology.

Since diesel is more reliable, it means there is less work for you and as well as maintenance. The whole package is wrapped together securely using a durable, fully welded steel frame. This frame also makes it easy to carry and transport. Using what’s called True Power Technology, this generator offers less than 5% harmonic distortion. This means that all of your electronics, appliances, and tools will run smoothly with no hiccups or lag. This is perfect during a power outage and an excellent fit for backup power.

Q. On Which Fuel the Generac Generator Runs?

  1. The operation is easy using the simple control panel.
  2. Everything is labeled, so you can quickly find the transfer switch, the hour counter, and the outputs.
  3. It also includes an optional electronic start, although it requires you to purchase a battery.

Looking for a Smaller Generac Generator?

#4 Generac’s 6954 Electric Start 8kW Generator

  • Size: 33.1 x 22.5 x 25.6 inches. Weight: 254 pounds.
  • Starting Wattage: 550. Tank Size: 12 gallons. Four 120/240V outputs. Optional electronic start.
  • Easy to read and use the control panel. The welded steel frame is sturdy and reliable.
  • Large tank runs for 32.4 hours at 50% load. The diesel engine is reliable and low maintenance.
  • Will not run without a battery due to fuel cut-off feature. Many consumers frequently asked common questions about products like the ones we have just discussed.

#3 Generac 7043 19.5/22kW Whole House Generator

Product weightProduct dimensionWattageVoltage
46 Pounds19 x 11 x 17 inches1700.00120 Volts

Not all users of Generac generators are experts, so a little help can be a good thing. If you’ve read through our review and find that you still have some unanswered questions, take a look at this FAQ section; you might find the answers you’re looking for! Quiet is a bit of a relative term when it comes to generators. Truthfully, no generator is going to be 100% silent since you are essentially running an engine designed to power multiple other machines.

The noise level will be specific to your machine, and its features. Generally, a larger machine tends to produce more noise. A smaller generator (like an inverter generator) will be quieter. Also Read:Generac IX2000 vs IQ2000 Generator Comparison. Generac companies function out of the United States and Canada, apart from the United States they do service countries internationally.

Where can I buy Generac parts?

  1. The answer to this question depends on what you plan on using your generator for.
  2. Luckily, the Generac website has a generator calculator that can help you find the best product to suit your needs, whether you need a standby generator, whole house generator, inverter generator, portable generator or you need it just as a backup power source.

2- How much does a Generac generator cost?

#5 Generac’s 6864, Diesel Powered 5kW Portable Generator

  • Different Generac products use different methods to power their engines. Most Generac models use natural gas, but some run on liquid propane.
  • Others run on battery power or have the option to switch the battery power. Battery options are useful because you can recharge them, but you will have to purchase the battery separately for these models.
  • Generac portable generators are available for purchase at a variety of online and in-store locations.
  • You can buy any Generac product on the Generac website, but you can also find their products at places like Ace Hardware, Acme Tools, Gainger, The Home Depot, Lowe’s, and many more locations.

What size Generac generator do I need?

Product weightProduct dimensionWattageVoltage
36.3 Pounds18.5 x 10.2 x 15.7 inches1200 watts120 Volts

For a full, comprehensive list specific to your location, use Generac’s online location lookup tool. This page will tell you the closest stores to you as well as give you online ordering options. With many generators sold out, we’ve found the best generators you can buy that are still in stock. The Generac website has an excellent resource for finding parts along with maintenance kits for your Generac generators.

Their online product lookup lets you nail down product specifications, manuals, FAQs, and how-to videos. You can also find parts that you need to make repairs. Also Read:Generac IX2000 Generator Review. As you can see, Generac is a well-known brand name that has tons of helpful generator products and resources. A generator can be the best solution in emergency situations as well as recreational activities. It can help you run almost all of the appliances in your home during an outage, but it can also serve as a comfort item on an outdoor adventure in the middle of nowhere.

#6 Generac’s Guardian 24kW Generator with Transfer Switch

  1. You should never be without power when you need it most, and the truth is, you never know when the next outage will be.
  2. Generac is dedicated to make sure its customers have only the best in quality.

Final Words

4. Generac 7676 GP8000E Portable Generator

  • Note: If you have a limited budget, then you can go for DuroStar generators.
  • Also Read: Generac IQ2000 Portable Generator Review. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to
  • If you are looking for a reliable domestic use generator, then there can’t be a better choice than Generac generators.
  • They have perfected their craft with years of experience since they are making it in 1959.
  • They are producing generators by modifying their industrial use generators into domestic use. This way, a generator becomes more reliable, sturdy, and powerful.

#8 Generac’s G0071720 10kW Home Standby Generator

Product weightProduct dimensionWattageVoltage
526 pounds48 x 25 x 29 inches22000 watts240 Volts

Besides, their powerRUSH technology offers more starting watts to start any appliances that have starting watts a few percent more than the rated urge watts of the generator. They are offering a wide range of options to select from. No matter how much power you need, you are going to find one which suits your needs. It is the most trusted brand among domestic users in the country, and besides where the Generac name gets attached, the quality of the product is 100% assured.

Type: Open-frame Inverter. Starting Watts / Running Watts (Gas): 3000/2300. Run-Time (Gas): 4.5 hrs. Start Type: Recoil with Cold-start. Fuel Capacity: 1.06 Gallon. Noise Level: 55 dBA. Weight: 59 pounds. Warranty: 3 years. Type: Open Frame Inverter. Surge Watts / Continuous Watts (Gas): 3500/3000. Run-Time (Gas): 8 hrs @ 50% load (2.37-gallon tank). Start Type: Recoil. Weight: 74.3 pounds. Warranty: 3 years. Type: Close Frame Inverter. Surge Watts / Continuous Watts (Gas): 2200/1700.

1. Generac GP3500iO Open Frame RV Ready Inverter Generator

  1. Run-Time (Gas): 10.75 hrs @ 25% load (1.2-gallon tank).
  2. Start Type: Recoil. Weight: 46 Pounds. Warranty: 2 years. Type: Close Frame Inverter.
  3. Surge Watts / Continuous Watts (Gas): 3500/3000. Run-Time (Gas): 8.9 hrs @ 50% load (2.6-gallon tank).

5. Generac 7678 GP3600 Portable Generator

#2 Generac’s 5734 15kW Gasoline Powered Whole House Generator

  • Start Type: Electric & Recoil. Weight: 109.1 Pounds.
  • Warranty: 3 years. Type: Non-Inverter Generator. Surge Watts / Continuous Watts (Gas): 4500/3600.
  • Run-Time (Gas): 9.5 hrs @ 50% load (3.7-gallon tank). Start Type: Recoil. Weight: 104 pounds. Warranty: 3 years. Type: Non-Inverter Generator. Surge Watts / Continuous Watts (Gas): 10,000/8000. Run-Time (Gas): 11 hrs @ 50% load (7.8-gallon tank).

3- Can I run my house with a 20kW generator?

Product weightProduct dimensionWattageVoltage
109.1 Pounds23.7 x 18 x 21.7 inches3500 watts120 Volts

Start Type: Electric & Recoil. Weight: 198 pounds. Warranty: 3 years. Type: Non-Inverter Generator. Surge Watts / Continuous Watts (Gas): 6875/5500. Run-Time (Gas): 10 hrs @ 50% load (7.2-gallon tank). Start Type: Recoil. Weight: 180 Pounds. Warranty: 2 years. This is the open frame inverter generator from Generac, which means it will be quite noisy compared to the closed frame designs. It is powered by the 212cc OHV gasoline engine capable of generating 3500 starting watts and 3000 running watts.

The unit has a 2.37 gallons capacity to store the gasoline; with this fuel tank full, the generator gives 8 hours of runtime at the 50% load and 11 hours runtime at the 25% load connected. The oil capacity of the generator is 0.6 qt. If the oil level falls below a certain level, then the low oil shutdown function will turn off the engine. The most highlighted feature of this generator is its PowerRUSH technology, which provides the extra power to start up the more power demanding appliances, which means you are getting more for less.

Where are Generac generators made?

  1. With most generators offering the electric and remote start, this generator lags with its only starting method, recoil start.
  2. If you don’t have much load connected to the generator, you can turn on the Eco Mode switch as it will improve the fuel economy and lifetime of the generator and also reduces the noise.
  3. You can connect the delicate electronics to the generator without worry because it supplies clean power with a THD of 3%.

Below Is Our In-Depth 8 Best Generac Whole House Generator Reviews

2. Generac iQ3500 3500 Watt Portable Inverter Generator

  • The power can be accessed from the 20V 20A Duplex, 120V 30A Twist Lock, and 5V DC 1A/2.1A USB outlets. If you ever run out of power, then you can always connect another Generac GP3500iO in parallel to increase the power output.
  • This generator comes with a 3-year limited warranty. Comes with PowerRUSH technology. It is lightweight. Comes with the RV ready outlet.
  • Noise is less compared to the conventional generator. It doesn’t have an electric start or remote start.
  • It may take a few pulls to start the generator.

#1 Generac’s 7676 GP8000E 8kW Whole House Portable Generator

Product weightProduct dimensionWattageVoltage
254 Pounds33.1 x 22.5 x 25.6 inches5000 watts1 volts

When unboxing it for the first time, you will notice that the whole body is constructed out of steel, which means the long life of the generator is ensured. Other than that, its dimensions, those small dimensions make the generator very portable. It is a perfect tool to take to camping sites or tailgating. It is the ideal inverter generator for people on the go. With a noise level of just 44 decibels, it won’t bother your neighbors, and if used at the camping, it won’t disturb the conversation with friends.

A 212cc OHV 4-stroke engine and the PowerRUSH technology make it a solid choice to power most house appliances. The engine generates 3500 starting watts and 3000 running watts. With the generator supplying clean power, you can power your sensitive electronics worry-free. One more surprise is that you can choose the running speed of the generator, just turn the dial and the speed of the generator will change. Moreover, there are two methods with which you can start the generator.

1- What is the reliability of Generac whole-house generators?

  1. The first is a very convenient electric start and the second is pull recoil start as a backup.
  2. The generator has a 2.6-gallon capacity to store the gasoline, and with the storage tank full, it provides the 8.9-hour runtime at the 50% load and 14.1 hours of runtime at 25% load.
  3. The control panel comes with the digital smart LCD that displays the remaining run-time, generator status, and also the level of remaining fuel.

What does a Generac generator run on?

3. Generac 6864 Generator

  • Furthermore, to increase the power, the generator has the ability to be connected in parallel.
  • Ultra-quiet operation. Highly portable. Provides long runtime. Electric start and pull start.
  • Don’t come with the wheels and handles. Could use the remote start.
  • Generac 7117 is best suited for outdoor enthusiasts, and this is because it is packed in a relatively small casing that has a durable handle to carry easily.
  • Besides, its low weight of 46 pounds plays an important part in its portability. This generator features a small 80cc engine that produces 2,200 starting watts and 1,700 running watts.


Product weightProduct dimensionWattageVoltage
197 Pounds28 x 27 x 25 inches8000 watts120V

The engine produces very little noise, so you won’t have to worry about disturbing the neighborhood or surrounding wildlife when camping. The power it generates is enough to run the small appliances and power your electronics, but if you want to power some more energy-consuming appliances, then you should look somewhere else. The generator can store up to 1.2 gallons of gasoline, which can provide power continuously for 5 hours at 50 % load and 10.1 hours at 25 % load. The generator comes with the economy mode, which surely improves fuel consumption and reduces the noise furthermore.

Moreover, the generator comes with a parallel connection kit, which will increase the power output to meet the increased demands. Its true power technology provides clean and stable power, which is suitable for sensitive electronics. The generator comes with two standard home outlets, a 12V car charger outlet, and a USB outlet.

1. Generac 7117 Gp2200I W 50St

  1. With a 2-year warranty, this generator is a solid choice if you want to power small appliances and electronics.
  2. Read the Full Review of Generac GP2200i Portable Inverter Generator. Highly portable and very lightweight.
  3. Easy to start and maintain. Provides clean power.

Are Generac generators quiet?

6. Generac 5939 GP5500 Gas Powered Portable Generator

  • Parallel capabilities. Can’t run large appliances. The engine is not EPA and CARB compliant.
  • Generac GP8000E is one of the best options that provide value for money.
  • This model features a powerful 420cc OHV engine that supplies 10,000 starting watts and 8,000 running watts.
  • Moreover, the generator incorporates a 7.5-gallon gas tank, which gives it 12 hours of runtime on a moderate quarter load and 9.5 hours of runtime on half load.
  • The power and the runtime this generator offers is enough to run almost all the house appliances continuously for a night.

2. Generac 6866 iQ2000

Product weightProduct dimensionWattageVoltage
46.2 Pounds20 x 12.6 x 16.9 inches1600 watts120 Volts

With its Power Rush Advanced technology, it delivers 30% more starting watts. So, don’t worry if you have appliances that need more starting watts than the rated value. The weight of the generator is around 200 pounds, which is quite heavy to move around, but the wheels and folding handles with padding make transportation easier. With this much power, the noise inherently comes along, and for this generator, the noise level is 70 dB. And it can be tolerated by your neighbors, but it may not be allowed there if you are in a park.

The generator comes with an electric start for an easy start and with the recoil start as a backup. And for the protection low oil shutdown system is there. The control panel of the generator contains 5 power outlets that are protected by the circuit breakers. There is also a fuel gauge and hour meter on the control panel, which shows the total time for which the generator is running. On top of all this, it comes with a 2-year of warranty and friendly customer support.

#7 Generac’s 70422 19.5/22kW Standby Generator Air-Cooled with Wi-Fi

  1. It is a great choice to keep the home essentials running and power most of the appliances of an RV.
  2. High power output. All outlets are covered.
  3. It provides a long runtime. It has wheels and handles for easy transportation.

Bestseller (lists)


  • Automatic low oil shutdown. It doesn’t have a DC power outlet.
  • THD rating is 5%. The battery needs to be charged externally.
  • This is the best generator to run a few essentials when the power is down for a couple of hours. It has a powerful 212cc OHV engine, which is capable of supplying 4500 starting watts and 3600 running watts.
  • With this power, you can run the lights, small heaters and also a small refrigerator. You can even start the appliances that have a starting watt of a few percent more than the rated surge watts of the generator, and this is possible because of the Advanced PowerRUSH technology of the generator.
  • To protect the engine from damage, the generator comes with a low-oil shutdown, which shuts off the engine if it senses the oil level is below some critical value.


A generator has a fuel tank with a capacity of 3.7 gallons, which incorporates the fuel gauge, and this large fuel tank will provide the extended runtime. The generator is not so heavy, but the heavy-duty never-flat tires and the fold-down handle make transportation much easier. The engine is CARB compliant and can be started with the pull recoil starter. The control panel comes with the hour meter, which shows how much time the generator is running. The control panel consists of one 120V 30A twist lock outlet for the direct connection to the RV, and there are also two 120V 20A duplex outlets, one 1-pole 30A circuit breaker, and two 1-pole 20A circuit breakers.