10 Best Gas Power Washers 2025 in the United States

The Simpson Cleaning 3400 PSI Gas Pressure Washer is designed with commercial users in mind, offering strong cleaning power and durability. It delivers 3400 PSI and 2.5 gallons per minute, which is a solid combination for tough outdoor tasks like deck cleaning and wood restoration. The Honda GX200 engine is reliable and known for easy starting, making it suitable for frequent, professional use. An aluminum frame and 10-inch pneumatic tires make the unit sturdy yet portable across uneven ground, which is helpful if you need to move it around different job sites.

The washer comes with five nozzle tips covering a wide spray range (from a focused 0° to a gentle soap setting), allowing you to adjust the water pressure and spray pattern depending on the cleaning task. The 25-foot hose is high quality, resistant to kinks and abrasion, giving you plenty of reach without sacrificing durability. However, the hose length is fixed, so if you need longer reach, you might have to purchase extensions separately.

One minor downside is the weight—at 73 pounds, it's not the lightest model, so while it has good portability features, it may require some effort to transport. Also, its detergent system is manual, requiring soap nozzle use rather than a built-in tank, which is common in this class but worth knowing if you prefer more automatic soap mixing. This Simpson power washer combines powerful cleaning, solid build quality, and professional-level features, making it a suitable choice for contractors or serious DIYers who need a dependable machine for heavy cleaning jobs. It strikes a good balance between power and portability, despite being somewhat heavy and lacking an integrated detergent tank.

The Simpson PS4240 PowerShot is a strong contender in the gas-powered pressure washer category, especially for professional use. It delivers 4200 PSI and 4.0 GPM, which provides a powerful and efficient cleaning experience suitable for demanding tasks like deck cleaning, wood restoration, and paint preparation. The Honda GX390 engine is known for reliability and ease of starting, making it a solid choice for contractors. The unit includes a heavy-duty AAA industrial triplex plunger pump with thermal relief to avoid overheating, which adds to its durability during extended jobs.

This washer comes with five quick-connect nozzles (0°, 15°, 25°, 40°, and soap), allowing flexibility for different cleaning needs. The 50-foot hose is both kink- and abrasion-resistant, enhancing usability without frequent interruptions. Portability is decent given its 141-pound weight, thanks to a sturdy welded steel frame and 13-inch pneumatic tires that help navigate various terrains. However, due to its weight, it’s less convenient for casual or light-duty users who might prefer something lighter.

The detergent system is integrated with a dedicated nozzle for soap application, which is practical for removing tough grime. One minor practical note is the fuel tank design, requiring careful filling to avoid spillage. The Simpson PS4240 is well suited for professionals or serious DIYers who need high power and reliability, but its heavier build and fuel handling might be less ideal for occasional users.

The Westinghouse WPX3200 Gas Pressure Washer stands out with its impressive 3200 PSI and 2.5 GPM, making it suitable for a variety of tough cleaning tasks around the home, including cars, fences, driveways, and patios. This powerful output is driven by a robust 212cc 4-stroke engine, known for its durability and efficiency. The unit comes with a convenient onboard 0.5-gallon soap tank, allowing you to easily apply detergent when needed.

Its 25-foot abrasion-resistant hose and lightweight spray gun provide ample reach and flexibility, making it easier to maneuver around different cleaning areas. The inclusion of five quick-connect nozzles (ranging from a pinpoint 0-degree to a wide 40-degree spray) ensures that you have the right tool for various cleaning tasks, from precise, high-pressure washing to gentle rinsing. Portability is a notable feature, thanks to its heavy-duty steel frame and 12-inch never-flat wheels, which make it easy to transport even across uneven terrains.

However, at 72 pounds, it is relatively heavy, which might be a consideration for some users. Some may also find the manual choke start less convenient than an electric start option. The washer is EPA compliant and comes with a 3-year limited warranty, providing peace of mind with your purchase. The Westinghouse WPX3200 offers powerful cleaning capabilities and robust construction, with some minor trade-offs in weight and start type.