Simpson ALH3425 Aluminum 3600 PSI 2.5 GPM Honda GX200 Gas Pressure Washer (60689)

Product Overview

The Simpson ALH3425 Aluminum Series Pressure Washer is a professional-grade gas-powered cleaning machine engineered for contractors, commercial users, and homeowners who require strong cleaning performance with a lighter and more corrosion-resistant frame design. Powered by a Honda GX200 commercial-grade engine, this pressure washer delivers up to 3600 PSI at 2.5 GPM, making it ideal for cleaning driveways, decks, siding, equipment, fences, and high-traffic outdoor surfaces.

Unlike many heavy steel-frame pressure washers, the ALH3425 uses an aircraft-grade aluminum frame, which significantly reduces overall weight while maintaining durability and corrosion resistance. This makes the unit easier to transport and more suitable for humid or demanding outdoor environments.

The washer is equipped with a AAA industrial triplex plunger pump featuring thermal relief protection and integrated unloader technology, designed for extended service life and consistent professional-level cleaning performance.

Key Features

Honda GX200 Commercial Engine
Provides reliable starting, smooth operation, and long-term durability with low-oil shutdown protection.

3600 PSI Maximum Cleaning Power
Delivers strong pressure performance for demanding residential and commercial cleaning tasks.

2.5 GPM Water Flow Rate
Provides efficient rinsing and surface cleaning performance.

AAA Industrial Triplex Plunger Pump
Commercial-grade pump with thermal relief system for improved durability and continuous operation.

Aircraft-Grade Aluminum Frame
Lighter than traditional steel frames while maintaining high durability and corrosion resistance.

35-Foot MorFlex High-Pressure Hose
Flexible, abrasion-resistant hose provides extended reach and easier maneuverability.

5 Quick-Connect Spray Nozzles Included
Includes 0°, 15°, 25°, 40°, and soap nozzles for multiple cleaning applications.

10-Inch Pneumatic Tires
Improves portability across rough terrain, gravel, grass, and job sites.

Uses

• Cleaning concrete driveways and sidewalks
• Deck restoration and wood preparation
• Washing siding, fences, and outdoor surfaces
• Removing dirt, mold, grease, and grime
• Equipment and contractor jobsite cleaning
• Residential and commercial maintenance work

Benefits

Commercial-Level Cleaning Performance
Strong PSI output handles difficult outdoor cleaning jobs effectively.

Lighter Weight Design
Aluminum frame improves portability compared to many steel-frame competitors.

Long-Term Pump Durability
Triplex pump system supports extended professional use.

Corrosion Resistance
Aircraft-grade aluminum frame resists rust and weather exposure.

Professional Mobility
Large pneumatic tires improve movement on uneven surfaces and jobsites.

Advantages

• Lighter than most commercial steel-frame pressure washers
• Reliable Honda GX200 engine platform
• Durable AAA triplex plunger pump
• Excellent for contractors and professional cleaning services
• Strong balance between portability and commercial performance
• Corrosion-resistant aluminum construction

Technical Specifications

Product Type: Gas Cold Water Pressure Washer
Model: ALH3425 / 60689
Maximum Pressure: 3600 PSI
Water Flow Rate: 2.5 GPM
Engine: Honda GX200 Commercial Engine
Pump Type: AAA Triplex Plunger Pump
Frame Type: Aircraft-Grade Aluminum
Hose Length: 35 ft MorFlex Hose
Wheel Type: 10-Inch Pneumatic Tires
Weight: Approx. 78 lbs
Fuel Type: Gasoline
Application: Residential / Commercial / Professional Cleaning