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5 Best Generac Pressure Washer Reviews – Buying Guide of 2023

Fact Checked By Daniel Wood | Post Updated On: April 29, 2023

Generac Pressure Washers are mostly used for heavy-duty cleaning. To get your desired one, keep reading our review and buying guide.

Gas-powered pressure washers are recognized worldwide for their high power and easy maneuverability. Now the question is whether all the gas pressure washers are good to go with. No, not all the machines you will find are suitable and comfortable to use. To find the best possible machine in your budget, you have to do a little research. Here we will help you in doing so.

The power washers of Generac are the best gas-powered machines you will find in present times. Generac made many machines, and all of them might not go well with your expectations and budget. If your budget is limited, you should do an extensive survey so that you can find the best possible one. This article is organized with the five best generac pressure washer reviews and a buying guide, making it easier to get a complete idea.

What Are The Best Generac Pressure Washers?

Best for low budget- Generac SpeedWash 7122

Best for heavy-duty cleaning- Generac 6602 OneWash

Best and Recommended by Editor- Generac OneWash 70191

Best for commercial- Generac 6565 420cc OHV

Best for comfortable cleaning- Generac 6923

Top 5 Best Generac Pressure Washers Comparison:

Generac SpeedWash 7122Generac SpeedWash 7122

  • Model: 7122
  • PSI: 3200
  • GPM: 2.7 Gallons
  • Weight: 62 Pounds
  • Dimension: 24.2 x 18.9 x 35.5 inches
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Generac 6602 OneWashGenerac 6602 OneWash

  • Model: 6603
  • PSI: 3100
  • GPM: 2.8 Gallons
  • Weight: 68.5 Pounds
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Generac OneWash 70191Generac OneWash 70191

  • Model: 70191
  • PSI: 3100
  • Weight: 65 Pounds
  • Dimension: 24.2 x 18.9 x 35.5 inches
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Generac 6565 420cc OHVGenerac 6565 420cc OHV

  • Model: 6565
  • PSI: 4200
  • GPM: 4.0 Gallons
  • Weight: 146.5 Pounds
  • Engine: 420cc OHV
  • Dimension: 34.5 x 28.3 x 42.5 inches
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Generac 6923Generac 6923

  • Model: 6923
  • PSI: 3100
  • GPM: 2.4 Gallons
  • Weight: 57 Pounds
  • Dimension: 24.4 x 18.8 x 35.4 inches
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5 Best Generac Pressure Washer Reviews – 2023 Buying Guide (Updated List)

Generac SpeedWash 7122

Generac SpeedWash 7122

You can count it as the best Generac pressure washer among its many variations. It is evident that a gas pressure washer is more powerful and expensive than its electric counterpart. Within your limited budget, I believe you will get all the necessary facilities with Generac SpeedWash 7122. This machine will provide you with proper water pressure and maneuverability for limited heavy-duty cleanings.


  • This machine will provide 3200 PSI water pressure and 2.7 GPM water flow.
  • Its turbo nozzle removes dirt and grime 30 faster, and its soap nozzle applies detergent 3x faster.
  • It has a Generac 196cc OHV engine with a manual/recoil starting type.
  • You will get a 30 feet long high-pressure hose that is kink resistant and non-marring.
  • It will provide 4 quick connect nozzles, 0-degree, 25-degree, 40-degree, and soap applicator.

Let’s look at its best parts that you will get the benefit from.


  • Its water pressure will quickly remove your tough grease and dirt; you can easily remove your old paint as well.
  • 30 feet long hose is enough to cover most of your cleaning areas.
  • A different nozzle tip will support you in various types of cleaning.
  • Changing the nozzle is easy and comfortable.
  • Its ergonomic spray gun is anti-slip, which will prevent accidents.
  • Its onboard storage makes it compact and easily moveable.


  • Some users said that this machine vibrates and creates noise a lot.
  • It might take several pulls to start its engine.

By looking at its good sides, you can easily consider it the best gas power washer to make your cleaning work easier and more comfortable. Buy this machine, and feel free to share your experience with us.

Generac 6602 OneWash

Generac 6602 OneWash

The best part of Generac is that they make all the components for their machines. Thus they can maintain the perfect combination to perform better than many other brands. Generac 6602 OneWash is another best quality pressure washers by the company. It makes your toughest cleaning job easy and comfortable.


  • This model has a 212cc OHV engine, which is classified as the most powerful in its class.
  • It generates a water pressure of 3100 PSI with its 2.8 GPM water flow.
  • Its best attraction is its power dial which can control your water pressure without changing the nozzle.
  • You will get a 30 feet long HP hose and three necessary nozzles, 0-degree, 25-degree, and soap applicator.
  • All of its controls are properly located in one place.

Now you should look at the things that you will gain from it.


  • Even the toughest dirt and grime can be easily removed with its high water pressure.
  • It’s effortless to control the water pressure by rotating its power dial.
  • The grip of its spray gun is proper and anti-slip.
  • Its nozzles can be easily connected and removed.
  • You can easily carry the device to your workplace with the two wheels.
  • You can control the device comfortably from a single platform.


  • Some users faced the unexpected problem of not running the engine smoothly.
  • Its starting system sometime might annoy you.

Different people have different opinions about a machine. Your budget will definitely fit its low price, and your cleaning will be smooth and comfortable. This machine is quite durable, so you don’t have to worry about changing it for long. For use at home and in small offices, it will work just fine.

Generac OneWash 70191

generac 70191

To fight the tough dirt and stain, Generac OneWash is another option you have. Like the above machines, it will provide you with enough water pressure to support your tough-duty cleaning. It can easily be used to remove your old paint and tough, sticky grease marks. This is a machine with high power and low price.


  • Its powerful engine and axial cam pump generate a maximum of 3100 PSI water pressure with perfect flow.
  • The spray gun has an integrated power dial to control the water pressure easily.
  • There is a convenient half-gallon detergent tank for your hassle-free cleaning.
  • Its weight is 65 lbs, so it becomes easy to carry around.
  • It provides 4 quick connect nozzles.

The benefits that you will get from this machine:


  • You are getting quite high water pressure for your tough cleaning.
  • Removing old paint becomes easy.
  • You will get quick-connect spray nozzles.
  • With the help of its two wheels, you can easily move it around.
  • Its power dial makes it easy to control the water pressure without changing the nozzle.
  • Your investment is secured by the warranty you will get.


  • A few of its users got starting problems after using it for a few days.
  • To clean your delicate stuff, its pressure might be harmful.

You can easily depend on this pressure washer based on its good reviews and ratings by its users. Its price will definitely be within your range, and its durability is unquestionable. After using this machine, don’t forget to share your opinion.

Generac 6565 420cc OHV

generac 6565

Here is your answer if you are looking for a commercial pressure washer. Commercial machines are used for heavy-duty cleaning, so they have to be very powerful. The above machines can be easily used for home and office purposes, but this one will not be suitable for household purposes.


  • It has a 420cc Generac OHV engine provides 4200 PSI water pressure with its 4.0 GPM water flow rate.
  • It has a Pro-grade Triplex pump, which is 4 times more durable than the axial cam pump.
  • Its low oil shutdown technology protects the engine.
  • It also gives 5 different quick connect nozzles, 0-degree, 15-degree, 25-degree, 40-degree, and soap applicator.
  • It has oversized Pneumatic Tires that make mobility smooth.

You should know the benefits you get from this machine.


  • You will get super-speed water that will clean your very tough grime easily.
  • You are getting a much stronger and more durable pump.
  • Its spray wand is easy to control and has a good grip.
  • You will get an alarm when you have to put oil in your machine.
  • The movements of this machine will be quite easy.


  • In some cases, its engine might shut off without any reason.
  • It will be difficult to use for household purposes.

Talking about a commercial pressure washer Generac 6565, can be one of the best choices that you can make. Your budget will definitely fit its price, which will be pretty low for the benefits you are going to get. We will be waiting for your good reviews.

Generac 6923

generac 6923

This is another pressure washer that can be perfect for household and office use. Generac 6923 can easily clean your car, motorcycle, boat, RVs, fence, patio, outings, roof balcony, etc. Generac makes all the parts of their machines, so their pressure washers’ combination is perfect.


  • Its pump is placed at the level of the Generac OHV horizontal shaft engine.
  • It produces 3100 PSI water pressure with 2.4 GPM water flow.
  • It has a half-gallon integrated detergent tank for smooth work.
  • You will get 4 different quick-to-connect nozzles, 0-degree, 25-degree, 40-degree, and soap.
  • For better maneuverability, it has two 10-inches wheels.


  • You will get more pressurized water than most of the electric pressure washers.
  • It can be easily carried to your workplace, which is usually away from home.
  • Connecting the spray nozzles is pretty easy, and anyone can do it.
  • For different types of cleaning, you get different nozzles.
  • Its onboard detergent tank relieves you from carrying an extra detergent bucket.
  • Its warranty will protect your investment.


  • A user observed a creak on its hose while using it, which might result from its high-pressure water.
  • Some of the consumers didn’t like its design.

You can easily choose this product for your working purpose based on its excellent features. Along with the above four Generac pressure washers, this one is also an excellent invention by the company. If you think of buying a good quality gas powered pressure washer, this can be a really good option.

About Generac as a Brand

The company was founded in 1959 and was the first to engineer affordable home standby generators. It is now the number one manufacturer of home backup generators. They expanded their business and started making power washers later. The company mainly makes pressure washers, generators, transfer switches, water pumps, AC power inverters, tools, and accessories.

The company has a good reputation for making pressure washers. Generac has the commitment to developing environmentally responsible products, processes, and partnerships. The company welcomes organizations for partnerships and shareholders for developing sustainable technology. They make gas pressure washers.

generac pressure washer reviews

The device features its products nicely with all the modern facilities. Their pressure washers are very well-known in the market. They are experts in making gas-powered residential pressure washers. You will find that their products are pretty powerful that help to clean heavy-duty filth and dirt. In almost all their products, they used a strong frame for the products’ durability. Their OHV horizontal shaft motors and pumps also are made of strong metal. If you have any queries regarding the Generac pressure washer, you can call Generac at the given number, 888-436-3722. After buying a Generac Power Washer, You must read the user manual to use the device safely.

Everything you Need to Know Before Buying the Best Generac Pressure Washer

A few things need to be considered to buy a pressure washing machine. Your purchase needs to be as appropriate as possible because you are going to invest your hard-earned money. It’s essential to gain prior knowledge and know-how so you can be benefited from the deal. We made an effort to provide you with the necessary idea before you make a purchase.

First of all, you have to decide that you are going to buy a gas-powered pressure washer and select the brand. Generac will be one of your best options in this regard.

Water Pressure

You need to list your working things to calculate what kind of machine you need. For example, cleaning the regular dirt off your floor, car, fence, etc., around 2000 PSI should be enough. In terms of cleaning oil and grease stains or a little tougher dirt, you will need about 2800 PSI gas pressure washers. To remove old paint coating from any surface, around 3000 PSI or more will be necessary.

  • PSI stands for Pounds per Square Inch. It is the measurement unit of your water pressure. More PSI means more water pressure.
  • GPM stands for Gallon Per Minute, which indicates the water flow your machine will provide in a minute. Your GPM must be synchronized with your PSI for better performance.

Power Supply

Two types of pressure washers are there in the market based on their power supply, electric pressure washer and gas pressure washer. Generally, gas-powered machines contain higher PSI than electric pressure washers. Gas machines are heavier, and they make more noise. To do your heavy-duty work, you should always choose a gas-powered device.

Nozzle Types

With your machine, you will get a set of nozzles for your different cleaning types. Many Generac machines have a power dial on their control panel to control the water pressure. This system will help you get rid of changing the nozzles repeatedly. Different types of nozzles are 0-degree, 15-degree, 25-degree, 40-degree, 60-degree, and soap applicator nozzle. The lower the degree higher, the more water pressure you get, and the more concentrated will be your water flow.


The best pressure washer is the one that can easily be moved. We always face this problem of moving our machines since all our cleaning things can’t be near around — something we need to go farther from our house to clean. A machine without mobility might put you in trouble. You must choose a machine with good mobility so that you can take it wherever necessary. Generac pressure washers are easy to carry around.


Budget is an important matter you must consider before buying a machine. Basically, gas-powered machines are more expensive than electric ones. For heavy-duty cleaning, you will need a gas-pressure washer, and you have to keep a little budget in your hand.

  • Perks of using Generac Pressure Washers

    Effortless cleaning – Ask any individual with a power washer and learn how to use this fantastic machine around your house. With this device, you must roll the unit out of the storage unit, insert the garden hose, ignite, and begin cleaning. Most people even get enthusiastic about using their pressure washer – like a tiny challenge or sport. The machine comes with a spray gun and multiple nozzles to wipe off dirt, grime, or grease.

    Save on Water Bills: With pressure washers that feature a high-pressure, you save up much more o water bills. The Generac’s machine uses three times less water. Water might not be quite expensive in your region, but the amount you save here can still be utilized elsewhere.


    Final Thoughts

    This is a little effort to give you all the important information. Generac is a well-known brand that produces good quality pressure washers maintaining low prices, and they have earned their consumers’ trust. If this is your first time, you must try one of their products for a better experience.

  • About Daniel Wood

    Daniel has completed his graduation mechanical engineering from a reputed university in US. He worked as a technical engineer in a pressure washer manufacturing plant for four years. He has a great passion for mechanical devices and has opened a workshop where he does research on various machines in his leisure time. His high interest in technology made him an expert in commercial and residential pressure washers.

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