Best Gas Pressure Washer of 2021

[Cover] Best Gas Pressure Washer

There are areas in your house that need special attention when it comes to cleaning. Your patios, driveways, and fences are areas that have always required you to take professional help when it comes to cleaning them but pressure washers have made your job surprisingly easier. Packed with a high powered hose and compact design that makes it suitable for most homes, you can now get professional-level cleaning for your furniture and driveways at home for free.

Pressure washers for home are usually categorized into two types, gas and electric. Electric pressure washers need to be connected to an outlet and are pumped by electricity. On the other hand, gas pressure washers have internal combustion engines that drive the pump.

Though gas washers are bigger compared to electric ones, they offer much more in terms of power and durability. They are also better suited for outer areas and job sites as there’s no electricity there.

Quick Picks

Here are 3 models we pick out from the options that you can compare based on the features, budget and performance.

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Best Gas pressure washers for 2021

Gas pressure washers are the simplest machinery to take care of the heavy-duty cleaning around your home without struggling with just soap and water or hiring a handyman. Here are some of the best Gas pressure washers of 2021 which will be perfect for your home.

#1 – Simpson MS60763-S Megashot

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With a simple assembly process and the ease of use for any customer, this Simpson gas pressure washer is one of the best to use. The washer can get rid of grime, dirt, and moss along with the tougher oil and grease stains as well. Even more so, it can help you strip old paint from a surface and prep it for a fresh painting job as well. The machine needs little to no maintenance and has a ton of safety features. The spray comes with a safety lock so it doesn’t go off on accident and cause damage to your skin. The frame is also welded from steel, enabling the washer to withstand heavy pressure as well. The Simpson washer also comes with 5 different nozzles that allow you to clean different areas more efficiently and easily.

The Good
  • Durable
  • Sturdy with steel framework
  • Powerful engine
  • Ease of assembly
  • Ease of use
Not So Good
  • Low-quality material
  • Cannot be used commercially
  • The engine can be hard to start sometimes

#2 – PowerBoss gas pressure washer

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The PowerBoss gas pressure washer lives up to its name and has quite a sturdy structure. The body has a heavy-duty frame with two wheels in front of it. The machine also has designated areas to help move it around and store the high-pressure hose on. Despite the functionality, the design is what this washer lacks the most. The washer, however, is capable of releasing the pressure of 3100 PSI with a 2.7 GPM. Though a medium-duty pressure washer, it is capable of removing some tough stains from your furniture and driveway. It also comes with a built-in 1-gallon detergent tank, making it easier to remove old stains with an extra element. The four different nozzles allow you to use the washer in multiple ways around the house, for different purposes. The gas pressure washer requires little to no maintenance and lasts a very long time.

The Good
  • Deep cleaning
  • Can help remove old paint
  • Easy to store
  • Easy to use
Not So Good
  • Too big for tiny houses
  • Cannot be used for heavy-duty tasks

#3 – Simpson cleaning MSH3125-S

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With 3200 PSI output, the Simpson gas pressure washer is made for heavy-duty cleaning and is powered by a strong engine. The machine has a sturdy built with 10″ wheels that help you take it around the roughest of terrains with ease and clean the respective surface. The axial pump too of the washer is top-notch and requires almost no maintenance after the ages of use. The pressure washer is made with superior quality materials and you’ll notice that as soon as you hold the hose in your hands. With five different nozzles options, the hose is resistant to any kind of abrasions and kinks and can clean any hard surface that you can think of. The washer is the most versatile of the lot, both in terms of attachment types and cleaning areas and can even prepare your home for painting. It’s also easy to use and comes assembled for its consumers.

The Good
  • 5 different spray tips
  • Lightweight
  • Durable
  • Easy to move around
  • Easy to use
Not So Good
  • Doesn’t have a detergent tank
  • May leak oil

#4 – Generac 6922

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With a pressure rating of 2800 PSI, the Generac pressure washer is best suited for residential purposes and all in one cleaning solution. The machine, however, is quite light at only 57 pounds and comes with a 25-foot high hose for cleaning. It offers four different nozzles for various kinds of cleaning operations around the house. Unlike many other gas pressure washers, this one doesn’t support hot water. It is thus, great for cleaning patios, furniture, and driveways but won’t be useful if you wish to strip the old paint off of something. All the functionalities of the washer are put together to make the design simple enough for the user to make use of. It also has a handle with a good grip and excellent trigger to ensure smooth functioning.  

The Good
  • Good design
  • Automatic stop system
  • Durable
  • Lightweight
Not So Good
  • Low pressure and medium-duty washer
  • Not enough value for money

#5 – Generac SpeedWash 7122

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A heavy-duty pressure washer with 3200 PSI and 2.7 GPM, this Generac pressure washer is designed especially for heavy-duty cleaning work in any area. It has been claimed that the washer is capable of removing dirt and stains about 50% faster than any other unit in the same range. It comes with several different nozzles that not only help with thorough cleaning but also provide ease of access in hard to reach areas. All the nozzles can be changed quickly to suit the job and thus, can be easily changed mid-job as well. The quality of this machine helps further as it is made with durable materials and comes with an abrasion and link resistant high-pressure hose.

The Good
  • Durable axial pump
  • Separate detergent tank
  • Easy to use
  • Flexible hose
  • 3-year warranty
Not So Good
  • Expensive
  • Parts aren’t easy to find
  • Needs maintenance

#6 – Karcher G2700

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Many of Karcher’s electric pressure washers are some of the best available in the market and so is the case for their gas pressure washers. This model of gas pressure washers offers only 2700 PSI and 2.5 GPM. It is thus, great for residential and medium-duty use. The price of the product is quite average and thus, so is the quality of some of its parts. The pump of the washer has an aluminum base but still is a lot more durable than most others available in the market. But the equipment quite safe to use as it comes with a child safety lock, protecting you and your children from any damage that may have due to high-pressure triggers. With 5 different nozzles, you can make use of it for any purpose you want and clean the toughest stains from hard to reach places. The washer is also lightweight and easy to move around.

The Good
  • Affordable
  • Lightweight
  • Easy to use
  • 3-year warranty on engine
Not So Good
  • Quality isn’t that great
  • Water gun and hose may leak

#7 – Generac 6882 OneWash

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Another one from the range of strong gas pressure washers from Generac, the 6882 OneWash has a PSI of 2900 PSI and can be used for anything from household cleaning to slightly heavier tasks of removing dirt and tough stains. The washer offers uses for 4 different types of surfaces including wood, concrete, car, and soap so that you can use the equipment for the right purpose. The washers give great results for the removal of moss from brick walls as well as old paint for a fresh job. It’s quite powerful as a residential machine but still lacks the appropriate punch to become an industrial one. 

The Good
  • Easy to use
  • Good grip
  • Easy to handle
  • Comfortable to move around
Not So Good
  • Low-quality parts
  • Cannot work with hot water
  • May require many pulls to start the machine

Things to look for in a gas pressure washer

Gas pressure washers, by default, are bigger compared to the electric ones and hold a lot of power. Owning a gas pressure washer becomes easier if you already own products like gas lawnmower or chainsaw. Here are the things you must look for while buying a gas pressure washer.

1. Does it have a recoil or electric starter?

 A gas pressure washer is powered by an internal combustion engine that is either made with an electric starter or a recoil one. In some cases, it has both the starters for added power. However, engines with electric starters are more expensive compared to the Recoil one. Therefore, depending on the power you need and the kind of combustion engine you want, you can decide upon the washer you wish to buy.

2. Does it run on hot water or cold water?

Gas pressure washers are powered by gas but don’t necessarily use hot water for the cleaning job. Therefore, you can either buy a washer with hot water or cold water. The hot water washers come with a boiler that heats the water up to 140 F more than its current temperature. Hot water works as a much better cleaner compared to cold and can get rid of the toughest of stains with ease. This is why dishwashers too, make use of hot water to clean your dishes.

3. How is its carriage frame construction?

Bigger gas pressure washers require more space over its foundation to accommodate the larger engine and pump. The framework should thus, be able to support it and should contain a vibration isolator engine mounting.

4. How tough are the tires?

Since gas pressure washers are heavier and bigger than the electric ones, they must have wheels under them for the ease of movement. The wheels under the heavy body should also be heavy-duty pneumatic tires that can handle the weight of the engine and pump with ease. Thus, always move the machine around a little bit and see if the lower part of it can take the weight of the upper before making a decision.

5. How is gasoline storage?

Gas pressure washers run on gasoline to power the internal combustion engine. Thus, you need to make sure that the tank is large enough to hold appropriate fuel for cleaning and doesn’t leak as well. Apart from that, you also need to take off the gasoline while storing the washer. You must always remove the gasoline from the tank so it isn’t a problem. The gasoline starts losing its effect after a couple of months and thus, should be removed after every use or changed in 3-4 months in the tank.

6. Does it have a direct driven or belt driven pump?

The water pump in the gas pressure washer is driven either directly or through a belt. If the water pump in your washer is direct driven, the product will be a lot cheaper and compact. However, the pump can heat up with extended use and can overheat the engine as well. It also makes the machine vibrate a lot more and is noisier compared to the belt-driven pump. The belt-driven pump doesn’t overheat even with extended use, improving the durability of the pressure washer. However, it makes the washer bulkier and reduces its overall PSI as well.

Final Thoughts

Gas pressure washers offer a lot to home residents in terms of heavy-duty cleaning. They’re able to do a thoroughly professional job in a matter of hours and with a lot lesser money. Make sure that you choose a washer that fits perfectly into your home and caters to all your major needs. 


Jeffrey Alfaro

Jeffrey is a craftsman and writer who specializes in testing tools and covering the tool industry for construction and woodworking professionals.

View all posts by Jeffrey Alfaro →

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