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Simpson 4400 PSI Gas Pressure Washer, 4.0 GPM Commercial Power Washer, Cold Water, CRX 420 Engine, 50' Hose, Aluminum Series, 49-State Compliant (ALH4440)

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Style: 4400 PSI


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: CRX 420 commercial series engine starts easily & includes low-oil shutdown; 4400 PSI 4.0 GPM CAT triplex pump features integrated unloader; Advanced oil seal technology & ceramic coated pistons extend seal life
  • LONG HOSE REACH: The Simpson Monster series 50' dual-braided high-pressure hose resists kinks and abrasion; Non-marring polyurethane jacket helps protect finished surfaces; Pump/Hose Connection: Threaded M22 connection
  • EASY MOBILITY: 13" 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; 38" L x 23.5" W x 29" H; 133 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

Description

The SIMPSON Aluminum Series pressure washer 4400 PSI at 4.0 GPM is great for construction, equipment upkeep, and facility and fleet maintenance cleaning. With a powerful CRX 420 engine, reliable CAT triplex pump, and ultra lightweight aircraft grade aluminum frame, this pressure washer is the optimum blend of maneuverability and performance. The ALH4440 also comes with a 50’ hose, ergonomic spray gun, and 5 Quick Connect nozzles. Designed to meet the rigorous demands of the cleaning professional, the SIMPSON Aluminum Series frame is crafted of 100% aircraft grade aluminum, making it lighter in weight than most steel frame pressure washer designs. Perfect for contractors who specialize in deck cleaning, wood restoration, paint preparation, graffiti removal and all other professional cleaning services. The SIMPSON Aluminum Series designed for optimum performance in the harshest environments. Easy-to- assemble and easy-to-start, the Aluminum Series power washer is great for contractors who specialize in deck cleaning, wood restoration, and all professional services. Includes: Pressure Washer, Hose, Gun, Wand, 5 Quick connect nozzle tips, Detergent siphon tube with filter, Engine Oil, Quick start set up guide, Owner's manual.

Brand: SIMPSON


Power Source: gas_powered


Color: Black and Silver


Item Weight: 133 Pounds


Hose Length: 50 Feet


Specification Met: 49-State Compliant


Product Dimensions: 38"L x 23.5"W x 29"H


Tank Volume: 4 Gallons


Maximum Flow Rate: 4 Gallons Per Minute


Global Trade Identification Number: 35


Item Weight: 133 Pounds


Hose Length: 50 Feet


Item Dimensions L x W x H: 38"L x 23.5"W x 29"H


Tank Volume: 4 Gallons


Power Source: gas_powered


Maximum Flow Rate: 4 Gallons Per Minute


Maximum Pressure: 4400 Pound per Square Inch


Specification Met: 49-State Compliant


Color: Black and Silver


Brand Name: SIMPSON


Model Number: ALH4440


Global Trade Identification Number: 35


UPC: 879399008535


Manufacturer Warranty Description: 3 Year limited commercial engine warranty


Manufacturer Part Number: 61252


Item Type Name: Gas Pressure Washer, 4.0 GPM Commercial Power Washer, Cold Water, CRX 420 Engine, 50' Hose, Aluminum Series, 49-State Compliant (ALH4440)


Manufacturer: Simpson


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • If I could do negative stars I would…
Style: 4400 PSI
I have NEVER had the issues with any Amazon seller the way I have with Simpson. It’s not even Amazons fault, it’s the way Simpson allows this expensive equipment to be packaged. Absolutely mind blowing that after ordering 3 pressure washers, even switching the model- I still had the same experience with all three. Super damaged every time. The 3rd seemed in better condition and the pump ended up being faulty. I finally saw other reviewers had the same complaints. It was so bad I refused to even order from another supplier because I’d still have the same issue since it’s Simpsons fault. Not sure who is running their warehouse/shipping but they need to be fired because I have NEVER seen anything like this before. It even affected my business for a few weeks while returns were being made, etc. Please do not order from Simpson. If you can find a non-damaged one in a store, do that. Or just order from literally any other company. ... show more
Reviewed in the United States on February 24, 2024 by Adam Crask

  • Awesome so far, 1 full day of use in…
Style: 4400 PSI
The media could not be loaded. Ordered the CRX 420, Cat Pump, aluminum frame version. The package arrived undamaged and a day early (I live in Florida). The box was in great shape as well. Used the unit to clean a large driveway today with a 20inch surface cleaner. It’s an absolute monster. So far I am very happy with my purchase. ... show more
Reviewed in the United States on October 19, 2024 by Luke

  • Don't buy this.
Style: 4400 PSI
It's a very difficult to start, and the instructions don't match the product itself. There is a lot missing information. The troubleshooting is similarly ineffective in solving anything. When I called customer service because I was having trouble starting it, the only advice was to return it and advise me of Amazons 30 day return policy. ... show more
Reviewed in the United States on April 12, 2025 by Molly Peters

  • El producto muy bueno pero me lo mandaron golpeado
Style: 4400 PSI
El producto muy bueno pero hay q tener cuidado porq ami me lo entregaron golpeada la máquina
Reviewed in the United States on January 31, 2025 by Estefany Elizabeth Calderon palacios

  • Llego terriblemente golpeado mi hidrolavadora!
Style: 4400 PSI
Buen producto, pero me llego en terribles condiciones y golpeado!! Con muchas hundiduras... eso no afecte el funcionamiento!
Reviewed in the United States on April 5, 2025 by Sarita

  • Not as powerful as you'd think
Style: 4400 PSI
I had a smaller dewalt pressure washer that was twice as powerful as this, the gun part broke on the 3rd usage
Reviewed in the United States on January 24, 2025 by alllen

  • Pressure washer repair
Style: 4400 PSI
Recieved item with a broken wand and a broken breather , received a 63 dollar refund and have to order new parts and repair equipment
Reviewed in the United States on June 19, 2025 by Amazon Customer

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