10 Best Gas Power Washers 2025 in the United States

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.

It includes premium accessories like a heat-resistant spray gun, insulated wand, and four quick-connect nozzle tips, enhancing its versatility and user comfort. The 50-foot hose provides extensive reach, and its sturdy steel frame with powder-coated finish ensures durability against rough handling and harsh environments. The unit is equipped with four large pneumatic tires for ease of movement across various terrains, although its substantial weight of 396 pounds may pose portability challenges for some users.

Additionally, the dual fuel tank system, with separate capacities for gasoline and diesel, supports prolonged operation without frequent refueling. Its design and specifications suggest it is most suitable for professionals and industries requiring powerful and efficient pressure washing capabilities. Its high weight and larger dimensions may be less convenient for everyday residential use. This machine is intended for rigorous industrial applications, offering reliability and high performance but requiring considerations for its heavy and substantial build.

The Westinghouse WPX3800 is a robust gas-powered pressure washer delivering 3800 PSI and a water flow of 3.6 gallons per minute, making it strong enough for cleaning driveways, decks, cars, fences, and patio furniture. Its 274cc engine is a reliable 4-stroke that starts with a simple pull and requires little maintenance. The washer includes a useful 0.8-gallon onboard soap tank, which helps apply detergent effectively for tougher cleaning tasks. You get a 35-foot hose that allows good reach around your work area, plus five quick-connect nozzles providing different spray patterns (from a narrow 0° jet for tough spots to a wider 40° fan for gentle cleaning).

The frame is built of steel and mounted on large, never-flat wheels for easier movement despite the unit weighing 91 pounds. This makes it fairly portable for a machine of its size. Included are helpful extras like engine oil and a quick start guide to get you going right away. On the downside, the weight and size may be a bit much if you need something very lightweight or compact. While powerful, this model might be more than what’s needed for small or occasional tasks, and gas engines require more upkeep than electric ones.

Additionally, some users might find the fuel odor noticeable at first. If you have medium to heavy-duty cleaning needs around your home or vehicles and prefer the freedom of a gasoline engine without depending on outlets, this pressure washer delivers solid performance and flexibility.

The DEWALT 61092 Gas Pressure Washer is a robust machine with a maximum pressure of 3400 PSI and a flow rate of 2.5 GPM, making it suitable for heavy-duty cleaning tasks. The recoil engine and low oil shutdown feature ensure reliable operation and protection of the engine. The OEM Technologies axial cam pump is maintenance-free and equipped with thermal relief, which enhances its durability and effectiveness.

The MorFlex hose is flexible, abrasion-resistant, and extends up to 25 feet, providing good reach without easily damaging surfaces. The steel frame with powder-coated finish adds to its durability and resistance to corrosion, while the 10-inch premium wheels facilitate easy maneuverability across various terrains, allowing for convenient usage in different outdoor environments.

Its weight of 85 pounds might be challenging for some users to handle or transport frequently. This gas pressure washer is ideal for users seeking a powerful and durable machine for comprehensive cleaning tasks around their home or property.