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10 Best Gas Powered Pressure Washers 2025 in the United States

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Our Top Picks

#1

Winner

Simpson Cleaning 4000 PSI Gas Pressure Washer, 4.0 GPM Power Washer for Hot Water Use, CRX 420 Engine, 50-Foot Steel-Braided Insulated Hose, King Brute, 49-State (KB65132)

Rating
10.0
Chosen by1,207
PSI (Pounds per Square Inch)
Engine Size
Portability

Most important from
15 reviews

PSI (Pounds per Square Inch)
This machine has no problem stripping paint off a car to bare metal with its powerful heat.
Engine Size
Starts easily and runs great, showcasing its reliability and performance.
Portability
It is advisable to use thick gloves to protect yourself from the heat while operating.

The Simpson KB65132 King Brute is a heavy-duty hot-water gas pressure washer designed for industrial use. With a powerful 4000 PSI and 4.0 GPM output, it is ideal for tackling tough grease and oil stains on industrial equipment, factory floors, and fleet vehicles. The CRX 420 engine is reliable and features a low-oil shutdown to extend engine life. Its durable construction includes a 1-1/2” tubular welded steel frame and powder-coated finish, ensuring long-lasting durability.

Additionally, it comes with a 50-foot hot water hose, heat-resistant spray gun, and four nozzle tips (15°, 25°, 40°, and Soap), providing versatility for different cleaning tasks. The pneumatic tires make it maneuverable across various terrains, although its substantial weight of 396 pounds may require effort to move around. This pressure washer’s large fuel tank capacities (1.6 gal gasoline and 5.0 gal diesel) support extended use without frequent refueling.

However, its size and weight may not be suitable for casual users or those with limited storage space. This model is 49-state compliant, excluding California, and may be more suited for businesses or professionals rather than homeowners. Its specialized features and industrial capability mean it is best for those with heavy-duty cleaning needs.

Rating
10.0
Chosen by1,207
PSI (Pounds per Square Inch)
Engine Size
Portability

Most important from
15 reviews

PSI (Pounds per Square Inch)
This machine has no problem stripping paint off a car to bare metal with its powerful heat.
Engine Size
Starts easily and runs great, showcasing its reliability and performance.
Portability
It is advisable to use thick gloves to protect yourself from the heat while operating.
#2

Simpson Cleaning 4200 PSI Gas Pressure Washer, 4.0 GPM Power Washer for Commercial Use, Honda GX390 Engine, 50-Foot Steel-Braided Hose, Aluminum Series, 49-State (ALH4240)

Rating
9.7
PSI (Pounds per Square Inch)
GPM (Gallons per Minute)
Engine Size

Most important from
1529 reviews

PSI (Pounds per Square Inch)
"This thing is a beast! It has more than enough power to satisfy the average homeowner or DIY'er."
GPM (Gallons per Minute)
"The pressure and water flow are a perfect match for heavy-duty tasks, making short work of even the toughest cleaning projects."
Engine Size
"Assembly was quick and easy, and the engine fired right up on the first attempt."
Hose Length
"The 50-foot hose is adequate for most jobs but its stiffness can make maneuvering a challenge."

The SIMPSON Cleaning ALH4240 is a high-performance gas-powered pressure washer, ideal for professional use. With a powerful 4200 PSI and 4.0 GPM, it is well-suited for heavy-duty tasks such as deck cleaning and wood restoration. The reliable HONDA GX390 engine ensures easy starts and dependable performance, while the maintenance-free CAT Industrial triplex plunger pump adds to its durability.

It is equipped with a 50-foot high-pressure hose that is kink- and abrasion-resistant, allowing for extended reach without compromising maneuverability. The five quick-connect nozzle tips provide versatility for different cleaning needs, and the professional spray gun with a safety lock-out enhances user safety and control. Despite its robust construction, the 124-pound weight and large 13-inch pneumatic tires make it relatively easy to move across various terrains.

However, its significant weight may still present challenges for some users when transporting the unit. Additionally, it is designed for 49-state compliance, excluding California. If you need a powerful, durable, and versatile pressure washer for professional applications, the SIMPSON ALH4240 is a strong contender, although it may be overkill for more casual, residential use.

Rating
9.7
PSI (Pounds per Square Inch)
GPM (Gallons per Minute)
Engine Size

Most important from
1529 reviews

PSI (Pounds per Square Inch)
"This thing is a beast! It has more than enough power to satisfy the average homeowner or DIY'er."
GPM (Gallons per Minute)
"The pressure and water flow are a perfect match for heavy-duty tasks, making short work of even the toughest cleaning projects."
Engine Size
"Assembly was quick and easy, and the engine fired right up on the first attempt."
Hose Length
"The 50-foot hose is adequate for most jobs but its stiffness can make maneuvering a challenge."
#3

Westinghouse WPX3400 Gas Pressure Washer, 3400 PSI and 2.6 Max GPM, Onboard Soap Tank, Spray Gun and Wand, 5 Nozzle Set, for Cars/Fences/Driveways/Homes/Patios/Furniture

Rating
9.7
PSI (Pounds per Square Inch)
GPM (Gallons per Minute)
Nozzle Types

Most important from
5671 reviews

PSI (Pounds per Square Inch)
Unbelievable pressure and the best power washer owned to date, with a motor that starts easily every time.
GPM (Gallons per Minute)
The Westinghouse WPX3400 pressure washer has an excellent balance of power and flow rate, making it ideal for a variety of cleaning tasks.
Nozzle Types
The reliable recoil start and variety of nozzles make it versatile for different tasks.

The Westinghouse WPX3400 Gas Pressure Washer offers a strong performance with a maximum pressure of 3400 PSI and a flow rate of 2.6 GPM. This makes it suitable for a variety of deep-cleaning tasks, including decks, driveways, and cars. The powerful 212cc 4-stroke engine ensures reliable operation, while the heavy-duty steel frame and 12-inch never-flat wheels add to its durability and portability.

Users will appreciate the onboard 0.5-gallon soap tank for added convenience during cleaning tasks. The 25-foot abrasion-resistant hose provides ample reach, and the package includes a spray gun, wand, and five quick-connect nozzles for versatile usage. Additionally, it is compatible with various pressure washer accessories, enhancing its functionality.

Some users might find the 63-pound weight a bit cumbersome to move around frequently, despite the wheels. The product is backed by a 3-year limited warranty, offering peace of mind. The inclusion of engine oil, tools, and a quick start guide facilitates easy setup. While it delivers excellent cleaning power, the noise level typical of gas-powered models might be a consideration for some users. The Westinghouse WPX3400 is a solid choice for homeowners looking for a robust and versatile pressure washer for extensive outdoor cleaning projects.

Rating
9.7
PSI (Pounds per Square Inch)
GPM (Gallons per Minute)
Nozzle Types

Most important from
5671 reviews

PSI (Pounds per Square Inch)
Unbelievable pressure and the best power washer owned to date, with a motor that starts easily every time.
GPM (Gallons per Minute)
The Westinghouse WPX3400 pressure washer has an excellent balance of power and flow rate, making it ideal for a variety of cleaning tasks.
Nozzle Types
The reliable recoil start and variety of nozzles make it versatile for different tasks.

Buying Guide for the Best Gas Powered Pressure Washers

Choosing the right gas-powered pressure washer can make a significant difference in the efficiency and ease of your cleaning tasks. These machines are powerful and versatile, making them ideal for a variety of outdoor cleaning jobs, from washing cars and driveways to cleaning decks and siding. To find the best fit for your needs, it's important to understand the key specifications and how they impact performance. Here are the main specs to consider when selecting a gas-powered pressure washer.
PSI (Pounds per Square Inch)PSI measures the pressure output of the washer. This spec is crucial because it determines how effectively the washer can remove dirt and grime. Lower PSI (around 2000-2800) is suitable for lighter tasks like washing cars and outdoor furniture. Medium PSI (2800-3200) is good for cleaning driveways, sidewalks, and decks. Higher PSI (3200 and above) is ideal for heavy-duty tasks like stripping paint or cleaning large areas. Choose a PSI level based on the toughest job you expect to tackle.
GPM (Gallons per Minute)GPM indicates the water flow rate of the pressure washer. This spec is important because it affects how quickly you can clean a surface. A higher GPM means more water is being used, which can speed up the cleaning process. For light to medium tasks, a GPM of 2-2.5 is usually sufficient. For more demanding jobs, look for a GPM of 2.5-4. Consider the size of the areas you will be cleaning and how quickly you want to complete the job when choosing the GPM.
Engine SizeThe engine size, measured in cubic centimeters (cc), determines the power and efficiency of the pressure washer. A larger engine can handle more demanding tasks and longer periods of use without overheating. For light to medium tasks, an engine size of 160-200cc is typically adequate. For heavy-duty tasks, look for an engine size of 200cc or more. Think about the frequency and intensity of your cleaning tasks to decide on the right engine size.
Nozzle TypesNozzles control the spray pattern and pressure of the water. This spec is important because different tasks require different spray patterns. Common nozzle types include 0-degree (a pinpoint jet for tough stains), 15-degree (a narrow fan for heavy-duty cleaning), 25-degree (a wider fan for general cleaning), and 40-degree (a wide fan for delicate surfaces). Some models come with adjustable nozzles or quick-connect tips for convenience. Choose a pressure washer with the nozzle types that match your cleaning needs.
Hose LengthThe hose length determines how far you can move around without having to reposition the pressure washer. This spec is important for convenience and efficiency. Shorter hoses (20-25 feet) are suitable for small areas and close-range tasks. Medium hoses (25-35 feet) offer more flexibility for larger areas. Longer hoses (35 feet and above) are ideal for extensive cleaning tasks where mobility is crucial. Consider the size of the areas you will be cleaning and how much mobility you need when choosing the hose length.
PortabilityPortability refers to how easy it is to move the pressure washer around. This spec is important for user convenience, especially if you need to transport the washer to different locations. Look for features like large wheels, a sturdy frame, and a manageable weight. If you plan to use the pressure washer in multiple locations or need to store it frequently, prioritize models that are easy to move and store. Consider your physical strength and the typical terrain where you will be using the washer.

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