SIMPSON Aluminum 3600 PSI, Direct Drive Gas Powered Pressure Washer # ALH3425-S
SIMPSON ALH3425-S aluminum gas pressure washer, 3600 PSI 2.5 GPM, Honda GX200 engine, AAA triplex pump
 
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📊 AI MARKET SNAPSHOT
• Best For: Property maintenance and small contracting crews who lift a machine in and out of a truck bed every day and want a lighter, corrosion-resistant frame under it.
• Highlight: The SIMPSON ALH3425-S is built on an aluminum frame, so it will not rust out the way a painted steel frame does after a season of wet work, and it runs a direct-drive pump at 3600 PSI.
• Expert Note: Direct drive keeps weight and price down but turns the pump at engine speed, so it is happiest in intermittent duty. Do not leave it idling in bypass for more than a minute or two - pull the trigger or shut it down - because bypass heat is what kills direct-drive pumps.
Sale Price: $829.99
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Product Code: ALH3425-S
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Description Reviews FAQ
 

The SIMPSON ALH3425-S is a professional cold-water gas pressure washer delivering 3,600 PSI at 2.5 GPM from a Honda GX200 engine and an AAA triplex plunger pump. Built on an aircraft-grade aluminum frame that resists corrosion and cuts weight versus steel, it is made for contractors and crews who move a power washer from site to site and clean demanding exterior surfaces all day.

Built for

  • Contractor and exterior cleaning - 3,600 PSI tackles concrete, brick, siding, and equipment.
  • Mobile and job-site work - the lightweight aluminum frame and pneumatic wheels move easily over rough ground.
  • Fleet and equipment washing - high pressure strips mud, grease, and grime.
  • Surface-cleaner cleaning - pairs with flat-surface attachments for driveways and lots.

Specifications

  • Output: 3,600 PSI at 2.5 GPM
  • Engine: Honda GX200, 196cc, with low-oil shutdown
  • Pump: AAA triplex plunger with integrated unloader, PowerBoost technology, and thermal relief
  • Frame: aircraft-grade aluminum, brushed extruded tubing; 10-inch pneumatic wheels
  • Hose: 35 ft MorFlex 5/16-inch non-marring high-pressure hose
  • Includes professional spray gun with safety lock-out, 16-inch steel wand, and 5 quick-connect nozzles (0, 15, 25, 40, soap)
  • Weight: about 78 lbs; fuel tank up to 0.83 gallon

Frequently asked questions

What are the output and engine specs?

The ALH3425-S produces 3,600 PSI at 2.5 GPM using a 196cc Honda GX200 engine and an AAA triplex plunger pump.

What makes the aluminum frame better?

The aircraft-grade aluminum frame resists corrosion and weighs less than most steel frames, making the unit easier to move while standing up to job-site conditions.

Which nozzles are included?

It ships with five quick-connect nozzles - 0, 15, 25, and 40 degrees plus a soap nozzle - to cover everything from concentrated stripping to wide rinsing and detergent application.

Can it run a surface cleaner?

At 2.5 GPM and 3,600 PSI it can drive many flat-surface cleaner attachments; check the attachment's minimum flow rating to confirm compatibility.

Discount Cleaning Products is an authorized SIMPSON dealer with US-based support to help you match the right pressure washer, hose, and nozzles to your cleaning jobs.
Features
  • Delivers 3,600 PSI at 2.5 GPM for professional cleaning
  • Runs on a 196cc Honda GX200 engine with low-oil shutdown
  • Drives an AAA triplex plunger pump with thermal relief
  • Resists corrosion and cuts weight with an aluminum frame
  • Rolls easily on 10-inch pneumatic wheels
  • Includes 35 ft hose, pro spray gun, steel wand, and 5 nozzles