--- product_id: 34952121 title: "3600 PSI Gas Pressure Washer, 2.5 GPM Commercial Power Washer, Cold Water, Honda GX200 Engine, 35' Hose, Aluminum Series, 49-State Compliant (ALH3425)" brand: "simpson" price: "$3017.70" currency: USD in_stock: true reviews_count: 13 category: "Simpson" url: https://www.desertcart.us/products/34952121-3600-psi-gas-pressure-washer-2-5-gpm-commercial-power store_origin: US region: United States of America --- # 10" Pneumatic Tires 5 Quick-Connect Nozzles 3600 PSI Power 3600 PSI Gas Pressure Washer, 2.5 GPM Commercial Power Washer, Cold Water, Honda GX200 Engine, 35' Hose, Aluminum Series, 49-State Compliant (ALH3425) **Brand:** simpson **Price:** $3017.70 **Availability:** ✅ In Stock ## Summary > 🚀 Power through grime like a pro with the Aluminum Series pressure washer! ## Quick Answers - **What is this?** 3600 PSI Gas Pressure Washer, 2.5 GPM Commercial Power Washer, Cold Water, Honda GX200 Engine, 35' Hose, Aluminum Series, 49-State Compliant (ALH3425) by simpson - **How much does it cost?** $3017.70 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/34952121-3600-psi-gas-pressure-washer-2-5-gpm-commercial-power) ## Best For - simpson enthusiasts ## Why This Product - Trusted simpson brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Mobility:** 10" premium pneumatic tires glide over any terrain with ease - • **Versatile Spray Options:** Five quick-connect nozzles cover every cleaning task from paint prep to car wash - • **Pro-Level Cleaning Power:** Honda GX200 engine + 3600 PSI pump for deep, fast cleaning - • **Durable & Lightweight Frame:** Aircraft-grade aluminum resists corrosion and cuts weight - • **Extended Reach & Flexibility:** 35' MorFlex hose is kink-resistant and abrasion-proof for hassle-free use ## Overview The SIMPSON Aluminum Series ALH3425 is a professional-grade gas pressure washer featuring a reliable Honda GX200 engine paired with a 3600 PSI, 2.5 GPM AAA triplex pump with PowerBoost technology. Its aircraft-grade aluminum frame ensures corrosion resistance and lightweight durability, while 10" pneumatic tires provide smooth mobility across rugged job sites. Equipped with a 35-foot MorFlex hose and five quick-connect nozzles, this 49-state compliant cold-water washer is engineered for contractors demanding efficient, versatile, and powerful cleaning performance. ## Description Built for pros, the SIMPSON Aluminum Series ALH3425 delivers 3,600 PSI at 2.5 GPM for fast, deep cleaning. Honda’s GX200 commercial engine teams with a maintenance-free AAA industrial triplex pump with PowerBoost for higher pressure at the nozzle. The aircraft-grade aluminum frame with brushed, extruded tubing resists corrosion and cuts weight, while 10" pneumatic tires roll easily over jobsite terrain. Includes a 35-ft MorFlex 5/16" high-pressure hose (non-marring, kink and abrasion resistant), ergonomic professional spray gun with safety lock-out, 16" steel wand, and 5 quick-connect nozzles (0°, 15°, 25°, 40°, soap). Threaded M22 connections speed setup; thermal relief helps prevent overheating. 49-state compliant and easy to start, this cold-water gas power washer is ideal for contractors handling deck cleaning, wood restoration, paint prep, equipment and concrete. Review: Honda engine starts easily. - Pressure washer works well and appears to be a good product. Shipping was extremely slow. If you need it within a month or two don't order this one. Review: Unit works, but check the factory assembly. - Delivery was great! However, one ofvthe tires was put on backwards and was never pinned in. Instructions didn't say anything about this. Wheel fell off on the first use. After I fixed that I used the unit and it worked flawlessly. Started on the first pull. So far I like the purchase, but I have only used it for 30 minutes. ## Features - SIMPSON PRESSURE WASHER FOR PROFESSIONALS: The Simpson Aluminum Series gas power washer cleans decks, driveways, siding, fencing, equipment, and graffiti; The cold water machine is great for contractors; 49-State Compliant (Not for sale in California) - ENGINE & PUMP: HONDA GX200 engine starts easily & includes low-oil shutdown; 3600 PSI 2.5 GPM AAA triplex plunger pump features integrated unloader; Thermal relief prevents overheating; PowerBoost Technology delivers higher pressure at the nozzle - LONG HOSE REACH: The Simpson Morflex series 35' high-pressure hose is non-marring, flexible and abrasion-resistant; Pump/Hose Connection: Threaded M22 connection - EASY MOBILITY: 10" premium pneumatic tires roll smoothly over gravel, grass, and curbs; Balanced layout improves transport; Aircraft grade aluminum frame with powder-coated finish is easy to assemble and resists corrosion; 21" L x 24" W x 34" H; 78 lb. - PRO PRESSURE WASHER ACCESSORIES: Five quick-connect pressure washer tips (0°, 15°, 25°, 40°, and soap nozzle) cover tasks from stripping paint to car cleaning; Professional QC spray gun with safety lock-out and 16" spray wand included ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00U30KGXI | | Best Sellers Rank | #31,879 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #230 in Pressure Washers | | Brand | SIMPSON | | Brand Name | SIMPSON | | Color | Black & Red | | Customer Reviews | 4.1 out of 5 stars 529 Reviews | | Global Trade Identification Number | 00879399001352 | | Hose Length | 25 Feet | | Included Components | SIMPSON Cleaning ALH3425 Aluminum Gas Pressure Washer | | Item Dimensions L x W x H | 30"L x 24"W x 21"H | | Item Type Name | Gas Pressure Washer, 2.5 GPM Commercial Power Washer, Cold Water, Honda GX200 Engine, 35' Hose, Aluminum Series, 49-State Compliant (ALH3425) | | Item Weight | 35.83 Kilograms | | Manufacturer | Simpson Cleaning | | Manufacturer Part Number | 60689 | | Manufacturer Warranty Description | 3 year engine, 5 year pump, 10 year frame | | Maximum Flow Rate | 2.5 Gallons Per Minute | | Maximum Pressure | 3400 Pound per Square Inch | | Model Number | ALH3425 | | Power Source | Gas Powered | | Specification Met | CARB, 49-State Compliant | | Tank Volume | 2.5 Gallons | | UPC | 879399001826 879399001352 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** SIMPSON - **Color:** Black & Red - **Global Trade Identification Number:** 00879399001352 - **Hose Length:** 25 Feet - **Item Weight:** 35.83 Kilograms - **Maximum Flow Rate:** 2.5 Gallons Per Minute - **Power Source:** Gas Powered - **Product Dimensions:** 30"L x 24"W x 21"H - **Specification Met:** CARB, 49-State Compliant - **Tank Volume:** 2.5 Gallons ## Images ![3600 PSI Gas Pressure Washer, 2.5 GPM Commercial Power Washer, Cold Water, Honda GX200 Engine, 35' Hose, Aluminum Series, 49-State Compliant (ALH3425) - Image 1](https://m.media-amazon.com/images/I/81HRGjn+KfL.jpg) ![3600 PSI Gas Pressure Washer, 2.5 GPM Commercial Power Washer, Cold Water, Honda GX200 Engine, 35' Hose, Aluminum Series, 49-State Compliant (ALH3425) - Image 2](https://m.media-amazon.com/images/I/817Wu7DZf9L.jpg) ![3600 PSI Gas Pressure Washer, 2.5 GPM Commercial Power Washer, Cold Water, Honda GX200 Engine, 35' Hose, Aluminum Series, 49-State Compliant (ALH3425) - Image 3](https://m.media-amazon.com/images/I/717EQVbAhRL.jpg) ![3600 PSI Gas Pressure Washer, 2.5 GPM Commercial Power Washer, Cold Water, Honda GX200 Engine, 35' Hose, Aluminum Series, 49-State Compliant (ALH3425) - Image 4](https://m.media-amazon.com/images/I/71QNfa9Vp+L.jpg) ![3600 PSI Gas Pressure Washer, 2.5 GPM Commercial Power Washer, Cold Water, Honda GX200 Engine, 35' Hose, Aluminum Series, 49-State Compliant (ALH3425) - Image 5](https://m.media-amazon.com/images/I/81akGrH0qaL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Is the pressure adjustable on this washer?.** A: Simply use a 5000 psi ball valve… You can adjust the pressure out of the tip to anything you want **Q: What is the return policy? If I return it do I have to pay shipping?** A: As far as I know you can return it without shipping cost, but I don't think you will want to, it's a great machine. **Q: How many CC is the motor** A: Hello, 196 CC's **Q: Is the pump a cat pump? why does description say aaa pump?** A: The newer ones come with a blue Colored CAT pump. Now all the pump models are the same, depends on what you ordered. Mines 4200 4gpm ## Customer Reviews ### ⭐⭐⭐⭐⭐ Honda engine starts easily. *by F***N on April 28, 2026* Pressure washer works well and appears to be a good product. Shipping was extremely slow. If you need it within a month or two don't order this one. ### ⭐⭐⭐⭐⭐ Unit works, but check the factory assembly. *by J***N on April 18, 2026* Delivery was great! However, one ofvthe tires was put on backwards and was never pinned in. Instructions didn't say anything about this. Wheel fell off on the first use. After I fixed that I used the unit and it worked flawlessly. Started on the first pull. So far I like the purchase, but I have only used it for 30 minutes. ### ⭐⭐⭐⭐⭐ Love this pressure washer! *by T***W on March 25, 2026* Easy assembly, nice fit and finish particularly the aluminum frame. Honda engine is awesome and started on the first pull. Plenty of power to pressure wash deeply for driveways, etc. ## Frequently Bought Together - Simpson Cleaning 3600 PSI Gas Pressure Washer, 2.5 GPM Power Washer for Commercial Use, Honda GX200 Engine, 35-Foot MorFlex Hose, Aluminum Series, 49-State (ALH3425) - Simpson Cleaning 80143 3600 PSI Universal Turbo Pressure Washer Nozzle, 1/4-Inch Quick Connect, Hot- or Cold-Water Use, Black - Simpson Cleaning 40226 Morflex Series 3700 PSI Pressure Washer Hose, Cold Water Use, 5/16 Inch Inner Diameter, 50 Feet, Natural --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/34952121-3600-psi-gas-pressure-washer-2-5-gpm-commercial-power](https://www.desertcart.us/products/34952121-3600-psi-gas-pressure-washer-2-5-gpm-commercial-power) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-16*