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Simpson Clean Machine 2900 PSI Pressure Washer Review

Editor's Choice

Simpson Clean Machine 2900 PSI Pressure Washer

Features 25-ft hose for extended reach
9.2/10
EXPERT SCORE
The Simpson Clean Machine is a powerful gas pressure washer designed for homeowners, making quick work of cleaning decks, driveways, and vehicles. With a 2900 PSI output and a durable design, it offers exceptional performance and versatility for all your outdoor cleaning needs.
Updated: July 20, 2026 9:29 am

Introduction

The Simpson Clean Machine 2900 PSI Pressure Washer is a powerful and versatile cleaning tool designed for homeowners looking to tackle a variety of outdoor cleaning tasks. Manufactured by Simpson, a well-known name in pressure washing equipment, this gas-powered washer is perfect for cleaning decks, driveways, siding, fencing, patio furniture, and even cars. With a strong emphasis on performance and ease of use, the Clean Machine is tailored for those who require a reliable cleaning solution.

Product Overview

The Simpson Clean Machine features a robust design that combines functionality with user-friendly features. Its construction includes a welded steel frame with a powder-coated finish that enhances durability and corrosion resistance. This pressure washer is equipped with a 170 cc engine and delivers a powerful 2900 PSI at a flow rate of 2.4 gallons per minute (GPM), ensuring efficient cleaning of various surfaces.

Appearance and Design

Visually, the Simpson Clean Machine presents a sleek and professional aesthetic with its black powder-coated finish. The pressure washer stands at a height of 35.75 inches, with a width of 18 inches and a length of 22 inches, providing a compact yet sturdy structure. One of the standout design features is its 12-inch never-flat wheels that enhance mobility across different terrains, such as gravel and grass. The front-load M22 pressure washer gun and 16″ spray wand are conveniently integrated into the design, aiding in ease of use.

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Key Features and Specifications

  • Model: CM61455-S
  • Engine: 170 cc gas engine with low-oil shutdown
  • Pressure Output: 2900 PSI
  • Flow Rate: 2.4 GPM
  • Hose Length: 25 feet, kink and abrasion-resistant
  • Warranty: 2-Year limited engine, 1-Year limited pump, 5-Year limited frame, 90-Day limited accessory
  • Weight: 50 lbs
  • Accessories: Four quick-connect pressure washer tips (0°, 15°, 40°, soap), siphon hose for detergent

User Experience

Having used the Simpson Clean Machine in various scenarios, I found it to be exceptionally effective. When tackling dirty outdoor furniture, the 2900 PSI proved powerful enough to remove grime without damaging surfaces. The 25-foot hose offered ample reach, making it easy to clean larger areas without constantly moving the unit. The quick-connect fittings simplified the setup process, allowing me to switch between different spray tips seamlessly.

During a recent driveway cleaning project, the high pressure efficiently blasted away stubborn stains, while the soap nozzle worked well to apply detergent evenly. The never-flat wheels made maneuvering the washer around the yard easy, even on uneven ground. Overall, the pressure washer performed impressively across various tasks, from washing cars to cleaning patios.

Pros and Cons

Pros:

  • Powerful 2900 PSI for effective cleaning
  • Durable construction with corrosion-resistant materials
  • Easy to maneuver with never-flat wheels
  • Includes multiple nozzles for versatile cleaning
  • Easy setup with quick-connect fittings

Cons:

  • Not compliant for sale in California
  • Gas-powered, requiring regular maintenance and refueling
  • Can be heavy for some users, especially when full of fuel

Conclusion

Overall, the Simpson Clean Machine 2900 PSI Pressure Washer is an excellent investment for homeowners seeking a powerful and reliable cleaning tool. Its robust design, impressive performance, and ease of use make it suitable for a variety of outdoor cleaning tasks. While it may require some upkeep associated with gas-powered equipment, the results it delivers justify the effort. If you’re in the market for a pressure washer that balances power and versatility, the Simpson Clean Machine is certainly worth considering.

Ray D Berryman
Ray D Berryman

Ray D. Berryman spent most of his working life selling, servicing, and repairing pressure washers and outdoor cleaning equipment. Over the years, he helped homeowners and contractors choose the right machines, solve common problems, and keep their equipment running properly. Now retired, Ray shares practical advice based on real hands-on experience rather than product brochures.

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