10 Best Commercial Pressure Washers 2025 in the United States

The Westinghouse WPX4400 is a strong contender if you're looking for a commercial-grade pressure washer. It offers a high pressure of 4400 PSI and a solid water flow rate of 4.2 gallons per minute, which means it can handle tough cleaning jobs like decks, driveways, siding, and even vehicles with ease. Its gas-powered 420cc engine is built for durability and long work sessions, supported by a maintenance-free pump that helps keep things running smoothly. You get a 50-foot abrasion-resistant hose and five different nozzle options, giving you flexibility for various cleaning tasks.

The steel frame and large, never-flat wheels make moving the unit manageable despite its weight of 142 pounds, although it’s not the lightest option if you need frequent portability. The 1.7-gallon gas tank allows for decent runtime between refills. On the downside, it's a cold water washer, so it might not be as effective on grease or oil stains compared to hot water models. Also, while the unit is ruggedly built, its size and weight mean it’s best suited for mostly stationary or site-based work rather than quick, on-the-go jobs.

This pressure washer suits commercial users or serious homeowners who need strong performance, versatility, and solid build quality without the complexity of hot water systems.