If you are frequently cleaning large areas of tough, stuck-on muck, grease, or dirt, then you know that a powerful gas-powered pressure washer is an essential tool.

At WorkWave, we have years of experience working with pressure washing businesses, and we have used lots of different kinds of pressure washers, including gas pressure washers. 

We’ve taken all of our years of working with these pressure washers, broken down the most important specifications and factors for choosing a good one, and compiled a list of the ten best gas pressure washers of 2023.

What criteria did we use to examine these gas-pressure washers? Take a look at our list here:

  • PSI
  • GPM
  • Motor
  • Pump Type
  • Hose Size
  • Weight
  • Wheel Size

These are not the only important things to consider when looking for a commercial gas-powered pressure washer, but they are some of the most important. If you don’t recognize some of the terms on the list or are not sure why they are important when choosing a gas pressure washer, don’t worry. 

After reviewing our ten best gas power pressure washers, we will go through each specification in our handy buyer’s guide.

The 10 Top-Rated Gas Pressure Washers

So, let’s get started. Here are the ten best gas pressure washers of 2023.

1. Simpson Cleaning PS60843 PowerShot Gas Pressure Washer

Simpson Cleaning PS60843 PowerShot Gas black Pressure Washer

Simpson Cleaning designed the PowerShot PS60843 as a heavy-duty pressure washer for commercial cleaners. 

Whether you specialize in deck cleaning, graffiti removal, paint preparation, or other cleaning services, the PowerShot is a professional gas pressure washer that can get the job done.

Its CRX 420cc engine and AAA triplex pump offer a fantastic 4400-PSI of output. The engine also comes equipped with a built-in low oil shutdown feature to protect the pressure washer and ensure it will keep working for you for a long time.

The 50-foot steel braided Monster Hose has a 3/8-inch diameter for a maximum flow rate of four gallons per minute (GPM). The long length of the kink-resistant hose also means you can work in larger areas without having to move the pressure washer.

The PowerShot comes with five quick connect nozzle tips, including 0°, 15°, 25°, 40°, and a soap nozzle, so you always have the right tool for the cleaning task at hand. 

The washer is built on an extra sturdy welded steel frame construction with a corrosion-resistant powder-coated finish. The premium 13-inch pneumatic tires make transporting it over a variety of terrains very easy.

Customer Rating


  • The most cleaning power of any washer on the list
  • Extended abrasion- and kink resistant 50-foot hose
  • Powerful AAA triplex plunger pump
  • 0°, 15°, 25°, 40° nozzles made of corrosion-resistant stainless steel
  • Large tires suitable for rough terrain
  • Designed specifically for professional cleaners


  • One of the heaviest pressure washers on the list
  • Not the fastest start-up


  • PSI: 4400 
  • GPM: 4.0 
  • Motor: CRX 420cc premium engine
  • Pump Type: AAA industrial triplex plunger pump 
  • Hose Size: 3/8-inch x 50-foot
  • Weight: 135 lbs
  • Wheel Size: 13-inch Premium pneumatic tires

2. Generac 7122 SpeedWash Gas Pressure Washer

orange and black Generac 7122 SpeedWash Gas Pressure Washer

The 7122 SpeedWash pressure washer from Generac is designed for many different cleaning tasks in a residential setting, such as concrete, wood, vehicles, and soap applications. The SpeedWash offers a lot of innovative features that make it an attractive option.

The engineers at Generac built this pressure washer with the Generac-brand 196cc OHV engine and a brass head axial cam pump. It provides a maximum flow rate of 2.7 GPM and a PSI of 3200 for quick, powerful cleaning. 

The SpeedWash comes with Generac’s trademarked PowerDial ergonomic spray gun as well as several cleaning attachments:

  • A Power Broom for cleaning performance that is up to 4x faster than a standard nozzle
  • A Turbo Nozzle with rotating pinpoint stream to remove tough, stuck-on dirt 30% faster than standard nozzles
  • A Soap Blaster attachment that can spray soap upwards of 3x farther than standard soap nozzles to provide better penetration and improved cleaning

Along with the special attachments, the SpeedWash comes with four quick-change nozzle tips, including 0°, 25°, 40°, and soap. The nozzles are corrosion-resistant, as is the 25-foot non-marring hose.

This lightweight 62-lb pressure washer sits on a steel frame and is easy to move thanks to the 10-inch Never Flat tires.

Customer Rating


  • Suitable for four different applications: concrete, wood, vehicles, and soap
  • The spray gun has an inverted trigger and cushion grip for extended use
  • Brass head pump lasts twice as long as aluminum heads
  • Easy to reach pump connections
  • Three special attachments and four nozzles
  • Lightweight, Easy to move and work with


  • It doesn’t include a 15° nozzle
  • No low oil shutdown system


PSI: 3200
GPM: 2.7
Motor: Generac 196cc OHV engine
Pump Type: Axial cam pump
Hose Size: 1/4-inch x 25-foot
Weight: 62 lbs
Wheel Size: 10-inch Never Flat wheels

3. Simpson Cleaning MSH3125 MegaShot Gas Pressure Washer

Black Simpson Cleaning MSH3125 MegaShot Gas Pressure Washer

The second Simpson Cleaning gas pressure washer on our list is the MSH3125 MegaShot. The MegaShot is a rugged workhorse that offers professional-level performance at a very competitive price point.

The 49-State compliant Honda GC190 engine is easy to start. The OEM Technologies axial cam pump is highly reliable and designed with thermal relief protection. These design considerations help reduce the amount of time you need to spend on maintenance.

The MegaShot pressure washer comes with a MorFlex 25-foot high-pressure hose which is non-marring and abrasion-resistant. This high-quality hose is vital because, with 3200 PSI and a flow rate of just over 2.5GPM, the MegaShot is not short on power or speed.

The 0°, 15°, 25°, 40° and soap nozzles, ergonomic spray gun, and a 16-inch steel QC wand/lance are versatile and comfortable enough to allow you to use this pressure washer all-day. 

Chunky 10-inch pneumatic tires provide strong stability and easy maneuverability no matter where you need to take the MegaShot. Finally, the welded steel frame helps to add to the rugged durability of this 66-lb gas pressure washer.

Customer Rating


  • Phenomenal Honda GC190 engine
  • Five quick-connect nozzles for more versatile uses
  • Exceptionally rugged construction for demanding jobs
  • Pneumatic tires for various terrains
  • Compact design is easy to maneuver
  • OEM Technologies axial cam pump virtually maintenance-free


  • Maximum Flow Rate on the lower side
  • A shorter hose means moving the washer more frequently


PSI: 3200
GPM: 2.5
Motor: Honda GC190 Engine
Pump Type: OEM Technologies axial cam pump
Hose Size: 1/4-inch x 25-foot
Weight: 66 lbs
Wheel Size: 10-inch premium pneumatic tires

4. Simpson Cleaning ALH4240 Aluminum Gas Pressure Washer

Red and Black Simpson Cleaning ALH4240 Aluminum Gas Pressure Washer

The ALH420 Aluminum series gas pressure washer from Simpson Cleaning is another rugged washer designed to meet the rigorous jobs a cleaning professional might come up against.

Built with a solid aircraft-grade aluminum frame and brushed extruded aluminum tubing, this pressure washer is lighter in weight than professional-grade steel frame pressure washers. However, the lack of weight does not detract from the ALH420’s power.

This pressure washer provides 4200 PSI and a 4.0 gallons per minute max flow rate. This is largely due to the mighty Honda GX390 OHV engine and the amazing CAT triplex plunger pump. 

A 3/8-inch x 50-foot hose gives you tons of reach. And because the hose is non-marring as well as kink and abrasion-resistant, you will have an easy time moving while you work.

Five quick connect nozzle tips consisting of 0°, 15°, 25°, 40°, and a soap applicator are easy to attach to the 3/8-inch QC spray lance, which means this pressure washer can handle a variety of jobs.

The ALH4240 from Simpson Cleaning is a smart choice if you work on graffiti removal, deck cleaning, wood restoration, paint preparation, or any other kind of professional cleaning task.

Customer Rating


  • Strong aircraft-grade aluminum frame
  • Rugged Honda GX390 OHV engine
  • Extra-long 50-foot hose
  • Very strong PSI and excellent flow rate
  • 13-inch pneumatic tires for rough terrains
  • Premium CAT triplex plunger pump


  • More expensive than other gas-pressure washers
  • Some users reported damage during shipping


PSI: 4200
GPM: 4.0 
Motor: Honda GX390 OHV engine 
Pump Type: CAT Industrial triplex plunger pump
Hose Size: 3/8-inch x 50-foot
Weight: 133 lbs
Wheel Size: 13-inch Premium pneumatic tires

5. WEN PW3200 Gas Powered Pressure Washer

orange and black WEN PW3200 Gas Powered Pressure Washer

Designed to be ultra-portable while still offering enough power to take on the dirtiest jobs, the WEN PW3200 gas-powered power washer is excellent if you value reliability and portability.

This 3200 PSI pressure washer blasts away dirt, paint, or other grime with ease. It features a 208cc 4-stroke OHV engine capable of pushing out up to 2.5 gallons per minute for faster cleaning. 

The axial cam pump provides a reliable spray over long distances and is a quality component that offers consistent performance and helps to maximize the unit’s lifespan.

There are five nozzles with the PW3200. The nozzles include 0°, 15°, 25°, and 40° nozzles to handle a variety of jobs no matter the size or the sensitivity of the surface you need to spray. The final nozzle is a soap nozzle that is great for washing cars, boats, RVs, or other vehicles.

The 12-inch wheels make the pressure washer easy to move over rough ground, and it weighs in at 67 lbs. 

You can pour up to 32 ounces of detergent into the onboard soap tank to provide more cleaning power with fewer interruptions for refillings. Additionally, the 5/16-inch by 30-foot hose gives you tremendous reach, making work more straightforward and manageable. 

Customer Rating


  • Lightweight unit for easier transport
  • Large, onboard soap tank
  • Large 12-inch wheels
  • Powerful 208cc 4-stroke OHV engine provides 2.5GPM
  • 5/16-inch by 30-foot hose offers extended reach
  • Includes five quick-connect nozzles: 0°, 15°, 25°, 40°, and soap


  • The spray gun is not the most comfortable
  • Other pressure washers are more durable


PSI: 3200
GPM: 2.5
Motor: 208cc 4-stroke OHV engine
Pump Type: Axial cam pump 
Hose Size: 5/16-inch x 30-foot
Weight: 67 lbs
Wheel Size: 12-inch wheels

6. Champion Power Equipment 4200-PSI 4.0-GPM Commercial

black and yellow Champion Power Equipment 4200-PSI 4.0-GPM Commercial Gas Pressure Washer

With measurements of 4200 PSI and a maximum flow rate of 4.0GPM, this Champion commercial-grade pressure washer is one of the most powerful on our list.

Champion designed this gas-powered pressure washer with their own 389cc 4-stroke engine and an Annovi Reverberi triplex brass head axial cam pump to provide quick, efficient cleaning. 

Field service professionals will appreciate the 5/8-inch by 50-foot steel braid reinforced high-pressure rubber hose for its large diameter and extended reach. The package also includes a 2-foot detergent hose that easily connects to the 1-gallon onboard detergent tank.

The 0˚, 15˚, 25˚, 40˚, soap nozzles ensure maximum cleaning with minimal hassle no matter what kind of material you are trying to clean away.

The low-profile design of the Champion 4200-PSI commercial pressure washer makes it easy to load into a service vehicle. And 10-inch tires make moving the washer an effortless task while on the job.

The steel frame makes it more durable and helps to absorb vibration to keep the noise level down. Operating at approximately 68 dBA from 23 feet away, which is the sound level of an average vacuum cleaner, is convenient if you are frequently working in residential or office settings. 

This Champion gas power washer is a fantastic choice whether you are cleaning stairs, decks, siding, patios, fencing, boats, RVs, farm equipment, other vehicles, or preparing a surface for painting.

Customer Rating


  • The large engine produces a lot of cleaning power
  • Quiet 68 dBA volume at 23 feet away
  • Big onboard soap tank
  • Corrosion-resistant forged brass manifold on AR triplex pump
  • Five 3/8-inch Quick-Connect nozzles
  • Automatic low oil shut-off sensor


  • Long wait times for customer service
  • A few reports of quality issues with starter pull cord


PSI: 4200
GPM: 4.0
Motor: Champion brand 389cc 4-stroke engine
Pump Type: Annovi Reverberi triplex pump
Hose Size: 5/8-inch x 50-foot
Weight: 124.6 lbs
Wheel Size: 10-inch solid wheels

7. Simpson 65208 4400 PSI 4.0 GPM Direct Drive Medium Roll Cage Professional Gas Pressure Washer

metallic and black Simpson 65208 4400 PSI 4.0 GPM Direct Drive Medium Roll Cage Professional Gas Pressure Washer

Built for the most demanding and dirtiest jobs that a field service professional can come up against, the Simpson Cleaning SuperPro gasoline pressure washer with a built-in roll cage is ready to work.

The SuperPro is tied for first in PSI with a vast 4400 pounds of pressure per square inch on our list. With a high flow rate of 4.0GPM, this pressure washer will wash away even the nastiest grim with relative ease.

It features the same high-quality, professional Honda GX390 OHV engine as many other commercial Simpson pressure washers. It also includes a professional-grade AAA triplex plunger pump which provides excellent performance.

The 50-foot steel-braided Monster hose is resistant to abrasions and kinking and also features a polyurethane outer jacket for additional protection. This model also has attachment points for high and low-pressure mountable hose reels, although the reels are sold separately from the washer.

The strong steel frame has reinforced lifting points for crane lifting, and the solid wheel axles are rated for transport via a forklift. Four 10-inch heavy-duty pneumatic wheels make rolling the unit easy, and the wheel locking brakes system provides an important safety measure.

Speaking of safety, the SuperPro pressure washer also features a built-in roll cage that offers added protection that will prolong the unit’s lifespan even if you are working in the most challenging industrial environments.

Customer Rating


  • Durable 49-State Compliant Honda engine
  • Remote unloader with a bypass hose
  • Ergonomic spray gun and wand/lance
  • Large fuel tank capacity of 1.59 gallons
  • Five quick connect nozzle tips: 0°, 15°, 25°, 40°, and soap
  • Four tires provide stability and maneuverability


  • The heaviest pressure washer on the list at 179-lbs
  • The most expensive unit on our list


PSI: 4400
GPM: 4.0
Motor: Honda GX390 OHV engine 
Pump Type: AAA triplex plunger pump 
Hose Size: 3/8-inch x 50-foot
Weight: 179 lbs
Wheel Size: 10-inch Premium pneumatic tires

8. Westinghouse WPX3200 Gas Powered Pressure Washer

blue and black Westinghouse WPX3200 Gas Powered Pressure Washer

The Westinghouse WPX3200 gas-powered pressure washer is a great choice if you are concerned with portability and safety but still want the power and performance.

With Westinghouse’s own 212cc 4-cycle horizontal shaft engine, there is no doubt that the power washer has the power for heavy-duty cleaning jobs. The three-piston axial cam pump is maintenance-free and delivers a strong, steady flow that will handle anything you need it to. It produces a robust 3200 PSI and offers 2.5 GPM.

The WPX3200 is an excellent choice for brick, brick, stone, concrete, wood, aluminum, and iron. It is perfect for deep cleaning the windows or sidings of homes, patio furniture, vehicles, and more.

You can add your detergents and other chemicals with its 0.5gal onboard soap tank, and the comfortable EndraGrasp spray gun is light enough to use all day without trouble.

The WPX3200 pressure washer from Westinghouse comes with five nozzles, including 0°, 15°, 25°, 40°, and soap applicator tip. It also includes a 25-foot abrasion-resistant hose with the M-22 Quick Connect design.

The high-profile, Never Flat wheels are an impressive 12-inches in size and, along with the resilient steel frame, provide great stability and easy movement.

Customer Rating


  • Self-priming, maintenance-free axial pump
  • High profile 12-inch Never Flat tires
  • Built-in 0.5 gal soap tank
  • Is CARB compliant
  • Only weighs 63 lbs
  • Designed with Easy Start pump valve


  • No Low Oil Shutdown feature
  • Commercial warranty is only for one year


PSI: 3200
GPM: 2.5
Motor: 212cc 4-Cycle Horizontal Shaft Westinghouse engine
Pump Type: 3-Piston axial cam pump
Hose Size: 5/16-inch x 25-foot
Weight: 63 lbs
Wheel Size: 12-inch Never Flat wheels

9. Generac 7132 Lithium-Ion Electric Start Gas Pressure Washer

orange and black Generac 7132 Lithium-Ion Electric Start Gas Pressure Washer

The 7132 Electric Start gas-powered pressure washer from Generac is packed with useful features designed to get you up and running faster.

A one-touch electric start with an auto-choke takes away the frustrations of fighting with a stubborn engine. The Generac brand 173cc 4-cycle OHV vertical shaft engine springs to life, unlike any other pressure washer we’ve ever used.

This pressure washer provides 3100 PSI and 2.5 GPM thanks to the quality engine and its vertical axial cam pump. The pump also features extended connections, which make attaching components easier.

Four quick-change nozzle tips, including 0°, 25°, 40°, and a soap applicator are paired with a PowerDial spray gun to combine versatility and ease of use. The PowerDial gun is comfortable thanks to its inverted trigger design and ergonomic comfort handle.

A 25-foot hose, onboard soap tank, and lightweight tubular frame all add to the convenience of storing, moving, and operating this compact gas-powered pressure washer.

Customer Rating


  • Electric start one-touch push start with auto-choke
  • PowerDial spray gun with inverted trigger
  • Lithium-ion battery good for 50 starts per charge (charger included)
  • Easy-to-access onboard detergent tank
  • Extended connections on vertical axial cam pump
  • Lightest pressure washer on the list


  • Only four nozzles, no 15° nozzle
  • No manual choke


PSI: 3100
GPM: 2.5
Motor: Generac 173cc 4-Cycle OHV Vertical Shaft engine
Pump Type: Axial cam pump
Hose Size: 1/4-inch x 25-foot
Weight: 58 lbs
Wheel Size: 10-inch Never Flat wheels

10. NorthStar 157127 Cold Water Gas Powered Pressure Washer

black and red NorthStar 157127 Cold Water Gas Powered Pressure Washer

The NorthStar gas-powered cold water pressure washer is a powerhouse of performance and durability in a compact design that can easily find a place in your professional cleaning business.

The Honda GX390 OHV engine offers reliable power, while the CAT 66DX direct drive crankshaft triplex pump adds to the pressure washer’s impressive specs. This pressure washer maxes out at a fast 3.5 gallons per minute of flow and up to 4200 pounds of pressure per square inch. 

If all that power isn’t enough to convince you that this NorthStar pressure washer is the right match for your heavy-duty cleaning needs, consider the industrial-grade rear entry spray gun, 18.5-inch quick-connect wand, and the 50-foot non-marking hose. 

This pressure washer offers many other features designed for the professional commercial cleaner. The Easy Start prevents pressure from building up to make pulling on the recoil easier, while oil drain cutouts make engine cleanings and oil changes much more straightforward.

A downstream chemical injector and adjustable pressure settings give you more control over how you do your cleaning. With the four quick-connect nozzles, including 15°, 25°, 40°, and a chemical applicator, you’ll be ready to handle a long list of different surfaces and materials.

This pressure washer has good protection features, including thermal protection on the pump to prolong its life and a low oil shutdown feature to keep the engine running well for a long time.

Customer Rating


  • High PSI of 4200
  • Heavy-duty CAT 66DX pump
  • Versatile downstream injector
  • 1-3/8 inch steel tube frame and 10-inch. Flat-Free tires
  • Industrial-grade rear entry spray gun
  • Convenient Easy Start system


  • It doesn’t come with a 0° nozzle
  • Expensive price tag


PSI: 4200
GPM: 3.5
Motor: Honda GX390 OHV engine 
Pump Type: CAT 66DX pump 
Hose Size: 3/8-inch x 50-foot
Weight: 145 lbs
Wheel Size: 10-inch Flat Freewheels

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Gas Pressure Washer Buying Guide

Now that you have read our comprehensive list of some of the best gas-powered washers of 2023, you may have a bunch of questions. Don’t worry because we have provided some of the answers for you in our handy buyer’s guide. 


high pressure cleaning side view

The terms PSI and GPM stand for pounds per square inch and gallons per minute, respectively. These are the two main terms used to understand the performance of a pressure washer. 

Basically, a washer with a higher PSI can push cold or hot water out with more force than one with a lower PSI. And a higher GPM means more water is flowing through the washer during a set amount of time than one with a lower GPM. 

Any washer with at least 2,800 PSI and a flow of 2.5 GPM or more is good for heavy-duty cleaning.

Pump Design

Most pressure washers use an axial pump or a triplex plunger pump. 

Axial Pump

An axial pump is a direct drive style of pump that spins at the same speed as the engine. An axial pump is often used in pressure washers because it is capable of providing tremendous pressure and performs well for many different cleaning tasks. The downside is that they typically break down faster than triplex pumps.

Triplex Pump 

Triplex pumps get their name because they have three plungers. They are considered the very best in pump design for pressure washers. Triplex pumps offer fantastic performance and often last longer than axial cam pumps. Of course, a triplex pump will raise the price tag of the pressure washer.

Hose Size

car garage air pressure compressor hoses and gauges industrial vehicle workshop equipment

When comparing hose sizes, the two measurements to be concerned about are length and diameter.

Comm lengths for pressure washer hoses range anywhere from 20-feet to 50-feet and what you need is dependent on how you like to work. A longer hose means you can move further away from the pressure washer without having to roll it behind, but a shorter hose weighs less and can be easier to work with.

The diameter of the hose factors is also essential to consider. Always double-check your pressure washer’s specs before buying a new hose to ensure that it is compatible. 

For a pressure washer of around 2700 PSI, a 1/4-inch hose should be perfect. If your pressure washer is capable of a higher PSI of 3400 or more, consider getting a hose that is 5/16. You can also go larger and buy a 3/8-inch diameter hose if your pressure washer is near 5000 PSI.


All of the pressure washers we reviewed come with a series of nozzles. Each nozzle differs in angle and its intended use. Choosing the right nozzle tip will depend on the job.

  • Red 0° nozzle: Offers the most concentrated flow. Suitable for tough dirt and stains but can damage soft or sensitive surfaces.
  • Yellow 15° nozzle: Also known as the chiseling nozzle. Ideal for stripping paint or similar tasks.
  • Green 25° nozzle: This nozzle is the default one for washing away dirt and mud. It provides an excellent combination of a wider spread and good impact pressure.
  • White 40° nozzle: This nozzle offers the widest spread of fluid and is a good choice for washing vehicles, grass, or other delicate jobs.
  • Soap applicator: The soap applicator is for distributing detergents and other chemicals.


pressure washing

Our final category is not actually a component found on the pressure washer, but we still like to point out its importance. 

The amount of noise a pressure washer makes is something that many professionals can easily forget to consider. Most gas pressure washers produce volume levels of approximately 85 dBAs, at which point you need to think about hearing protection.

Detergent Tank

Some pressure washers come with a soap tank.

Consider how often you need to work with chemicals and whether you need an onboard soap tank. Some professionals prefer to use a downstream injector and a separate container of detergent.


At WorkWave, we have a lot of experience with pressure washers. That is why we have provided you with this list of the ten best gas pressure washers of 2023. 

Read through the list of gas-powered pressure washers here and compare the specifications. Consider what kind of work you typically do and what performance you need from a pressure washer.
Whether you have a busy, established field service company or are just starting and interested in getting more pressure washer contracts, this list of reviews and the buyer’s guide will help.

Start Using Software for Pressure Washing!

With features like scheduling, dispatching, reporting, invoicing, and more, pressure washing software may help you operate your business more effectively.

Hosam Sayed is a Product Marketing Manager at WorkWave with extensive knowledge of B2B product and marketing positioning. When not in front of his computer, he can be found spending time with his family, enjoying outdoor activities, and working on perfecting the art of landscaping.