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10 Best Gas Power Washers 2025 in the United States
#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)
The Simpson KB65132 King Brute is a high-powered gas pressure washer designed for industrial use. With a robust 4000 PSI and 4.0 GPM flow rate, powered by a reliable CRX 420 engine, it is capable of tackling heavy-duty cleaning tasks such as removing grease and oil stains from machinery and vehicles. The durable AAA triplex plunger pump ensures long-term performance, aided by features like low-oil shutdown for engine protection.
#2
PowerSmart Gas Pressure Washer 3400 PSI, 2.5 GPM Gas Powered Pressure Washer, 212CC Engine, 10" Wheels, 5 Nozzles for Patio, Car, Driveway, Fence & Home Cleaning
The PowerSmart Gas Pressure Washer offers strong cleaning performance with 3400 PSI pressure and 2.5 GPM water flow, making it capable of handling tough cleaning jobs on driveways, patios, cars, and fences. Its 212cc 4-stroke OHV engine allows for a quick, easy pull start and requires less maintenance since it doesn’t need mixing oil with gas. The inclusion of 5 different nozzles (0°, 15°, 25°, 40°, and soap) provides flexibility to switch between intense spot cleaning and more gentle washing, which is handy for various surfaces.
Rating
9.7
PSI (Pounds per Square Inch)
Nozzle Types
Hose Length
Most important from
71 reviews
#3
Simpson PS4240 PowerShot Gas Pressure Washer Powered by Honda GX390, 4200 PSI at 4.0 GPM, (49 State) 60456
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.
Rating
9.1
PSI (Pounds per Square Inch)
Engine Size
Hose Length
Most important from
629 reviews
Top 10 Best Gas Power Washers 2025 in the United States
#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)
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)
PSI (Pounds per Square Inch): 4000
GPM (Gallons per Minute): 4.0
Engine Size: CRX 420
Nozzle Types: four quick-connect tips
Hose Length: 50 Feet
Portability: four large pneumatic tires
Detergent System: dual fuel tank
Chosen by 1205 this week
PowerSmart Gas Pressure Washer 3400 PSI, 2.5 GPM Gas Powered Pressure Washer, 212CC Engine, 10" Wheels, 5 Nozzles for Patio, Car, Driveway, Fence & Home Cleaning
PowerSmart Gas Pressure Washer 3400 PSI, 2.5 GPM Gas Powered Pressure Washer, 212CC Engine, 10" Wheels, 5 Nozzles for Patio, Car, Driveway, Fence & Home Cleaning
PSI (Pounds per Square Inch): 3400 PSI
GPM (Gallons per Minute): 2.5 GPM
Engine Size: 212cc 4-stroke OHV
Nozzle Types: 5 nozzles: 0°,15°,25°,40°,soap
Hose Length: 26 inches
Portability: 31 lbs, 10-inch wheels, foldable
Detergent System: soap nozzle
Simpson PS4240 PowerShot Gas Pressure Washer Powered by Honda GX390, 4200 PSI at 4.0 GPM, (49 State) 60456
Simpson PS4240 PowerShot Gas Pressure Washer Powered by Honda GX390, 4200 PSI at 4.0 GPM, (49 State) 60456
PSI (Pounds per Square Inch): 4200 PSI
GPM (Gallons per Minute): 4.0 GPM
Engine Size: Honda GX390
Nozzle Types: five quick-connect nozzles, various angles
Hose Length: 50 Feet
Portability: 141 lbs, steel frame, 13-inch tires
Detergent System: integrated nozzle for soap
Westinghouse WPX3800 Gas Pressure Washer, 3800 PSI and 3.6 Max GPM, Onboard Soap Tank, Spray Gun and Wand, 5 Nozzle Set, for Cars/Fences/Driveways/Homes/Patios/Furniture, Black
Westinghouse WPX3800 Gas Pressure Washer, 3800 PSI and 3.6 Max GPM, Onboard Soap Tank, Spray Gun and Wand, 5 Nozzle Set, for Cars/Fences/Driveways/Homes/Patios/Furniture, Black
PSI (Pounds per Square Inch): 3800 PSI
GPM (Gallons per Minute): 3.6 gallons per minute
Engine Size: 274cc
Nozzle Types: five quick-connect nozzles (0°, 40°)
Hose Length: 35 Feet
Portability: 91 lbs, steel frame, large wheels
Detergent System: 0.8-gallon onboard soap tank
Related Products
Up to 50% off
DeWalt DXPW3400PRNB-S PressuReady 3400 PSI Gas Pressure Washer with Quick Start Technology, 2.5 GPM Axial Cam Pump, 208cc Engine, Cold Water, Includes 25-Ft Hose, Nozzles, Spray Gun & Wand, 49-State
DeWalt DXPW3400PRNB-S PressuReady 3400 PSI Gas Pressure Washer with Quick Start Technology, 2.5 GPM Axial Cam Pump, 208cc Engine, Cold Water, Includes 25-Ft Hose, Nozzles, Spray Gun & Wand, 49-State
PSI (Pounds per Square Inch): 3400
GPM (Gallons per Minute): 2.5
Hose Length: 25 Feet
Portability: 10-inch wheels
DeWalt DXPW3425E-S 3400 PSI Gas Pressure Washer, 2.5 GPM Axial Cam Pump, 208cc Recoil with Electric Start Engine, Spray Gun and Wand, 5 QC Nozzles, 5/16-in. x 25-ft. Hose, 49-State
DeWalt DXPW3425E-S 3400 PSI Gas Pressure Washer, 2.5 GPM Axial Cam Pump, 208cc Recoil with Electric Start Engine, Spray Gun and Wand, 5 QC Nozzles, 5/16-in. x 25-ft. Hose, 49-State
PSI (Pounds per Square Inch): 3400 PSI
GPM (Gallons per Minute): 2.5 Gallons Per Minute
Engine Size: 208cc
Nozzle Types: five quick-connect nozzles
Hose Length: 25 Feet
Portability: 81 pounds, 10-inch tires
Detergent System: soap nozzle
#10
Westinghouse WPX3200 Gas Pressure Washer, 3200 PSI and 2.5 Max GPM, Onboard Soap Tank, Spray Gun and Wand, 5 Nozzle Set, for Cars/Fences/Driveways/Homes/Patios/Furniture
Westinghouse WPX3200 Gas Pressure Washer, 3200 PSI and 2.5 Max GPM, Onboard Soap Tank, Spray Gun and Wand, 5 Nozzle Set, for Cars/Fences/Driveways/Homes/Patios/Furniture
PSI (Pounds per Square Inch): 3200
GPM (Gallons per Minute): 2.5
Engine Size: 212cc
Nozzle Types: five quick-connect nozzles
Hose Length: 25 Feet
Portability: steel frame, 12-inch wheels
Detergent System: 0.5-gallon soap tank
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Buying Guide for the Best Gas Power Washers
Choosing the right gas power washer can make a significant difference in how effectively and efficiently you can clean various surfaces. Gas power washers are known for their power and mobility, making them ideal for heavy-duty cleaning tasks. When selecting a gas power washer, it's important to consider several key specifications to ensure you get the best fit for your needs. Understanding these specs will help you make an informed decision and choose a model that meets your cleaning requirements.PSI (Pounds per Square Inch)PSI measures the pressure output of the power washer. This spec is crucial because it determines how forcefully the water will hit the surface you're cleaning. Lower PSI (around 2000-2800) is suitable for light to medium tasks like cleaning cars, decks, and patios. Medium PSI (2800-3200) is good for more stubborn dirt and larger areas like driveways and fences. High PSI (3200 and above) is ideal for heavy-duty tasks such as stripping paint or cleaning large commercial areas. Choose the PSI based on the toughest cleaning job you expect to tackle.
GPM (Gallons per Minute)GPM indicates the water flow rate of the power 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 help rinse away dirt faster. For light cleaning tasks, a GPM of 2.0-2.5 is usually sufficient. For medium to heavy-duty tasks, look for a GPM of 2.5-4.0. 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 gas power washer. A larger engine can provide more power and handle tougher jobs. For light to medium tasks, an engine size of 160-200cc is typically adequate. For more demanding tasks, look for an engine size of 200cc or higher. Think about the intensity and frequency of your cleaning tasks to decide on the appropriate engine size.
Nozzle TypesNozzles control the spray pattern and pressure of the water. This spec is important because different nozzles are suited for different cleaning tasks. Common nozzle types include 0-degree (high pressure, pinpoint spray), 15-degree (high pressure, narrow spray), 25-degree (medium pressure, wider spray), 40-degree (low pressure, wide spray), and soap nozzles (for applying detergent). Choose a power washer that comes with a variety of nozzles to handle different cleaning scenarios effectively.
Hose LengthThe hose length determines how far you can move around without having to move the power washer unit. 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 medium-sized areas. Longer hoses (35 feet and above) are ideal for large areas and hard-to-reach spots. 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 power washer around. This spec is important for ease of use, 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 power washer in multiple locations or need to move it frequently, prioritize models that are designed for easy portability.
Detergent SystemThe detergent system allows you to apply soap or cleaning solutions through the power washer. This spec is important for tackling tough stains and achieving a deeper clean. Some models have onboard detergent tanks, while others use a siphon hose to draw detergent from an external container. If you frequently use detergents for cleaning, choose a model with a convenient and efficient detergent system.