5 Best Gas Pressure Washers to Buy in 2020
Receiving dirt from many places? It’s part of everyday life. However, there is an easy way to deal with dirty and difficult surfaces. Since you arrived here on the best gas pressure washer page, this means that you already know the easiest way.
Best Pressure washers can run on gasoline or electric motor, and there are clear differences between these two types of pressure washers. We will explore all in detail, focusing on gas washers and their superiority.
We will discover all the pros and cons of the reviews on the pressure washers we have prepared, together with the purchase guide. In this way, you can choose the best gas pressure washer that will handle all high-performance cleaning effortlessly.
Let’s check out some best-branded best gas presser washer for your requirement.
- SIMPSON Cleaning MS60763-S MegaShot Gas Pressure Washer Powered by Kohler RH265, 3100 PSI at 2.4 GPM
- SIMPSON Cleaning PS3228 PowerShot Gas Pressure Washer Powered by Honda GX200, 3300 PSI at 2.5 GPM, Black
- Karcher G2700R Gas Pressure Washer, 2700 PSI, 2.4 GPM.
- WEN PW31 3100 PSI 2.5 GPM Gas Pressure Washer with 208cc Engine.
- Generac 6922 2,800 PSI, 2.4 GPM, Gas Powered Pressure Washer.
1. SIMPSON Cleaning MS60763-S MegaShot Gas Pressure Washer Powered by Kohler RH265, 3100 PSI at 2.4 GPM
Simpson MS60763 MegaShot Pressure Washer
This Simpson is really powerful and is on our list of the best gas pressure washers for a reason. The best features are ease of use and the simple initial assembly process. Simpson is perfect for intense cleaning tasks, such as removing dirt, mud, mold, oil leaks, and grease stains. You can also remove the paint and prepare the surfaces for a new painting job. Although it mentions the ease of use, this unit is excellent as it requires almost no maintenance.
Security features are also an added benefit. There is a safety lock for the spray gun so that it does not accidentally light. With such a high-pressure water intake, direct spraying on the skin can cause serious damage. This pressure washer is built to withstand intensive use: its frame is welded in steel.
Pros
The best feature of this product is its durability. It comes with sturdy construction that is reinforced with a steel structure, a powerful motor, and a hose that is not abrasion-resistant. There are 5 different nozzles that allow different spray patterns, which can be combined with the pressure outlet.
It is wonderful to see that a manufacturer applies a user-centered approach from the point of view of the assembly, including ease of use and effortless trigger activation.
Cons
In addition to the sturdy frame, the rest of this pressure washer is made of a low quality plastic that is prone to damage. This is still a residential cleaner not intended for commercial use. In addition, the engine is very strong but difficult to start. Sometimes it even shuts down, so you must restart it. This unit has a 2-year warranty, but many dealers do not repair the engine.
2. SIMPSON Cleaning PS3228 PowerShot Gas Pressure Washer Powered by Honda GX200, 3300 PSI at 2.5 GPM, Black
Simpson PS3228 guide
Features and specifications:
- 8 GPM and 3300 PSI
- Use the Honda GX200 OHV engine with an oil alarm.
- Structure and construction of welded steel. 10-inch premium tires.
- Monstrous tube of 25 feet with a diameter of 5/16 inches and a spray rod that connects to each other.
SIMPSON Cleaning PS3228 PowerShot Gas Pressure Washer.
Pros
Ease of use:
Getting this beast to work is simple. Start-up has never been a problem, as the manual clearly highlights the procedure for cold start and warm start. All you have to do is follow the instructions, observe the numbering on the pressure washer and pull the cable to turn it on.
Since all Simpson pressure washers are factory tested, you know your particular part won’t let you down. As for the later use, I discovered that it was a little difficult to operate when the hose and the wand are used interchangeably because it takes some time to join them.
Fortunately, positioning the nozzles isn’t such a big problem, even if the five-pointed tray tends to shake a lot when the unit is turned on.
Noise:
Do not wait for silent operation with Simpson PS3228-S. The Honda GX200 engine is not the high-end engine used by many other high-pressure cleaners in the professional series. It is a simple semi-professional level engine designed to keep costs down. As a result, the noise produced by this beast is deafening.
Fortunately, the output power is on par with the noise levels, so I can live with some confusion. If you are not a fan of noisy power tools, gas machines are not for you.
Power:
The engine and pump can pump 3300 PSI along with impressive efficiency. In fact, when the telescopic rod connected to the tube and the pressure washer is used to extend the range up to 8 feet, the observed pressure drop is marginal. As a semi-professional Simpson pressure washer, this is excellent power.
Application:
Good, so you cannot adjust the pressure produced by this pressure washer, but it is not a problem since with the 5 different nozzles, you can check if there is some pressure to some extent. If you are going to wash cars alone, this is an overwhelmed device. However, for an average owner looking to buy something that suits all their home maintenance projects, the Simpson PS3228-S is a great investment.
Durability:
The welded steel frame holds each component firmly in place but does nothing to eliminate vibrations. It is probably due to the use of a higher motor that the vibrations are too much. However, the only real problem you will have to face in the end is that the pump consumes faster than the engine itself. The AAA industrial triplex pump with Power Boost included in the Simpson PS3228-S lasts an average of two to three years on average but does not expect it to last longer.
Compared to the long engine life of more than 10 years, the pump is probably the only weak point.
3. Karcher G2700R Gas Pressure Washer, 2700 PSI, 2.4 GPM
Karcher G 2700 guide
Main features of the Karcher G 2700
Power
The Karcher G 2700 machine is a gas pressure washer with a powerful 4-stroke engine. The engine has a displacement of 196 ccs and works best if powered by unleaded gas. For a generator of its capacity, the Karcher machine, in turn, delivers a maximum of 2700 PSI and facilitates a general water supply speed of 2.5 gallons per minute.
However, with any pressure washer, there must be a pump that eventually pushes the water out of the gun. The G 2700 model works with an axial pump equipped with an aluminum head. The pump is efficient and designed to last a long time.

Ease of use
Directly after reading the easy to understand manual, it is possible to assemble all the parts and pieces in the Karcher G 2700 and use it without any difficulty. The design of the main parts of the machine, such as the hose and the handle, makes it even easier to work with the Karcher G model.
The handle, for example, mounted on the elongated body is easy to hold and pushes the machine so different surfaces easily with the help of a set of wheels. The flexible tube, on the other hand, is conveniently hooked so that it can be accessed and cleaned easily without forcing it. Once again, you can fold the tube back into place once cleaning is complete.
Pros
Versatile.
With its powerful engine and multiple spray patterns, the Karcher model offers great versatility to help you perform more household tasks. Compact and lightweight The Karcher machine is conveniently located on large pneumatic wheels that make it feel very light. In general, the 48.5 pounds weighing is still convenient and some people could lift it without the help of the wheel kit. The compact design, on the other hand, reduces its footprint for easy storage.
Vertical and foldable design.
The Karcher G pressure washer is designed to work without forcing the back. As such, it is equipped with an extended handle and large 8 “pneumatic wheels that keep it at a convenient height. However, the machine is also easy to store thanks to its foldable design. Efficient. According to the multiple Karcher G 2700 reviews, the machine Provides consistent performance
Easy to use and maintain
The machine is generally easy to use and requires little long-term maintenance It has a 3-year motor warranty and a 2-year axial pump warranty
Cons
It does not work with hot water, which makes the cleaning of greasy areas inefficient. You need to use a filter to make sure you add quality water to the tank.
4. WEN PW31 3100 PSI 2.5 GPM Gas Pressure Washer with 208cc Engine
WAN PW31 3100 PSI
Looking at your patio, it might be time to take a washing machine. If you have never had a pressure washer before, you have never enjoyed the great time-saving functions of pressure washers when cleaning gutters, vehicles, and car entrances.
The WEN PW31 gas pressure washer offers an incredible amount of energy and is efficient in water and gas. This tool not only simplifies cleaning but makes it fun. Let’s see what WEN PW31 offers. Check the WAN PW31 3100 PSI for the pressure washer of the 4-stroke OHVI engine
208 CC WEN PW31 is equipped with a 4-stroke OHVI engine with the delivery of up to 3,100 PSI for the management of all types of cleaning jobs. Although this PSI count is not as high as the other household water cleaners available in the market, it is still more than enough to clean entrances, terraces, and cars. This gas pressure washer uses only 2.5 GPM of water without sacrificing its cleaning capabilities.

Pressure Washer Axial Cam Pump
The pump is connected directly to the OHVI 208 CC engine, which allows the shafts to move at the same speed as the engine. The only drawback is that the life of axial cam pumps, in general, is considerably shorter compared to the more advanced triplex pumps supplied with expensive but higher quality water cleaners.
That said, you can still expect to perform at least two years of cleaning with the PW31 high-pressure cleaner (protected by the manufacturer’s warranty). A frequent complaint about the pump is that it loses oil like crazy. After assembling and adding the required quantities of oil and gasoline, the pump began to drip. The loss can be attributed to poor production, but not to assembly.
Five quick-connect nozzles
This WEN high-pressure cleaner has “five quick connections” that offer different amounts of pressure. The 0 ° nozzle offers the most aggressive water flow, perfect for lifting the most difficult disorders and spills of rough surfaces. The 15 ° nozzle emits a wider flow of water but still extremely concentrated to do a quick job of lifting the accumulated dirt.
The 25 ° nozzle emits an even wider range of water, providing less pressure to clean yards and benches. The 40 ° nozzle is the wide-angle water jet with the minimum pressure to clean windows and cars. The final nozzle is to expel a constant stream of soap from the detergent bottle. The on-board soap tank is located in front of the engine near the front support.
Assembly
From the package, you will be provided with the parts to be connected and locked in place before adding petrol, oil, and water to the engine. Although the assembly can be annoying, it is extremely easy to do. The manual included in the package provides clear instructions on how to perfectly assemble the unit.
However, there is no indication of how many ounces of engine oil or how many liters of petrol should be added to the engine. For the record, 17.6 fl. on. Engine oil should be used or until oil is visible in the threads of the box hole.
5. Generac 6922 2,800 PSI, 2.4 GPM, Gas Powered Pressure Washer
Generac 6922 with 2800 PSI Pressure washer
This is not the unit with the lowest water pressure on our list, but it is certainly one of them. It is intended for residential use and cleaning all in one. The production of PSI probably plays a role in the weight of the product: it only has 57 kilos. This Generac is supplied with a 25-foot high-pressure hose with 4 nozzle tips.
This gas washer does not support hot water cleaning. All in all, for simple applications, this is a good unit. You can clean terraces, vehicle entrances, your car, the platform, all normal pressure washes. If you want to remove the paint from the house, well, this is not the right one.
Generac has a nice overall design and all controls are grouped, so ease of use is guaranteed. The comfortable grip on the handle and the easy-to-pull spray trigger ensures that cleaning is simple and effortless.

Pros
This pressure washer is well built, with a strong frame, but the manufacturer has paid close attention to the protection of the pump. It is placed on the floor so as not to be damaged and to break a pipe is very simple. There is a special system in place that cuts the starter and supplies fuel. This prolongs the life of the pressure washer. Furthermore, this pressure washer with a soap tank is very famous in terms of the classification of the pressure washer.
Cons
Don’t forget that this pressure washer, with the current price, is still built for average cleaning purposes. A major disadvantage is the lack of a pressure output regulator. It is intended to use the supply pressure of 2800 PSI, whether it is necessary to remove the paint, wash a concrete entrance or clean more delicate surfaces. You can try cleaning them from a greater distance and reduce the impact that way. Although this is a high-quality product, it lacks many features that other similarly priced units have.
The buying guide for the best gas pressure washers
Did you know that pressure washers can have 75 times the water pressure of a normal garden hose? Another fun fact that the Pressure Washer Lab can tell you is that pressure washers save water. They use 80% less water to clean the same surface than the garden hose. This is great news for the environment, its easy to clean surface and the water bill.
Finding the best gas pressure washer may seem a nuisance, but fortunately, that’s why we prepare this detailed purchase guide. You can save hours of research by simply reading this article. So, let’s start with the basics.
Well, there are many things to consider before buying a pressure washer. This can help you avoid the mistake of buying the wrong one and waste money on the process. There are several questions that you must answer before choosing the correct one.
Power source
Do you want to manage the cables by having one of the most powerful pressure washers or do you want the same power with easier mobility? Gas pressure washers require maintenance, such as oil changes, level control, and fuel loading. Powerful pressure washers consume a lot of energy. There is always a risk of electricity and water production.
Terrain
You need to think about where you will use the pressure washer. How accessible is the land? Some high-pressure washers are built low, so they cannot handle uneven terrain. Some have a welded frame that protects the engine and the pump.
Water pressure resistance
How powerful should your unit be? What are you going to clean with that? If you plan to clean regular surfaces, such as entrances, decks, coverings, and patios, then you should invest in a residential cleaner. However, if you want to remove the paint, clean the heavily embedded moss, the accumulated sludge, and mold, you should look for units with higher PSI and GPM.
Price
The price varies a lot. Residential high-pressure gas cleaners range from a couple hundred to machines worth a thousand dollars. If you need something more robust, with more pressure and cleaning power, you should invest accordingly.
PSI and GPM output
PSI is the measure that tells you how strong the water pressure is. The higher the number, the more powerful the machine. It stands for pressure in square inches – PSI. The GPM number indicates how many liters of water flow through this pressure washer, per minute. A larger number means that the water outlet is excellent. A high PSI with a low GPM output means that it is a medium pressure cleaner. You should consider both numbers when buying a gas pressure washer.
Important notice
Do not take any pressure washer lightly. Especially because these are gas-powered units with a higher PSI output. If you direct the pressure washer towards you or another person, in the vicinity of a spray gun, you can seriously damage the fabrics. You should always handle them carefully. It is also advisable to avoid common mistakes such as not wearing rubber coveralls and insoles, in case electricity is contacted. Not of the gas pressure washer, of course, but of the house in general. It is always useful to select gas units with child safety locks or any other safety function.
How to install a gas pressure washer?
The installation of a gas pressure washer is simple. If this is the first configuration, it is necessary to assemble the unit according to the user manual supplied with the product.
Check the oil
Before turning on the gas pressure washer, make sure there is enough oil in the tank. Remove the oil cap and read the oil levels. Make sure you don’t spill too much oil, otherwise the tank will overflow and could damage something in the process.
Fill the gas tank.
This is a fairly simple step. All gas pressure washers need petrol to work. The type of fuel depends on the model and make sure you check again in the manual which type you need. In general, gas-fired units for residential use regular gasoline and heavier commercial grade high-pressure cleaners generally use diesel. Fill in the required quantity.
Spray gun
The spray gun is the main instrument. Depending on the model, some guns have a pressure power regulator. Nozzles and extension rods must be attached to the spray gun. Some spray guns have a comfortable grip, others have an easy-to-press trigger. Be sure to examine the features carefully and select the pressure washer with the nozzle to your liking.
High-pressure hose
The high-pressure hose brings water pressure to the spray gun. Logically, that is why you must connect one end of the tube to the high-pressure inlet and the other to the spray gun. Make sure all connections are tight to prevent leaks.
Connect to the water source.
Test the flow of your water: turn it on and see if the water is clean. This will ensure that rancid water is removed from the hose and that the hose is clean. Insert it in the coupler and then in the pressure washer. Tighten everything to avoid losses. Now simply turn on the water source.
Cleaners, start the engine!
The last step is to turn on the gas pressure washer. There are two general models for starting a gasoline engine, but the main point is the same: it is necessary to prime the carburetor. You can use the air valve or a priming bulb for this. Pull the starter cable until the engine starts. Some pressure washers require 1 or 2 steps and others cannot start without 15 or 20.
Let the cleaning begin.
You are now ready to use the pressure washer. Simply direct the weapon and press the trigger. As soon as the trigger is released, the water will stop working. Be sure to use proper nozzles and accessories for the spray gun to clean the desired surfaces.
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