---
product_id: 554503691
title: "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)"
brand: "simpson"
price: "$2446.94"
currency: USD
in_stock: false
reviews_count: 7
url: https://www.desertcart.us/products/554503691-simpson-4400-psi-gas-pressure-washer-4-0-gpm-commercial
store_origin: US
region: United States of America
---

# 4400 PSI industrial-grade power 4.0 GPM high flow rate 50-ft steel-braided hose with rugged pneumatic tires 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)

**Brand:** simpson
**Price:** $2446.94
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Power through grime like a pro with Simpson’s unstoppable 4400 PSI beast!

## Quick Answers

- **What is this?** 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) by simpson
- **How much does it cost?** $2446.94 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/554503691-simpson-4400-psi-gas-pressure-washer-4-0-gpm-commercial)

## 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

- • **Built to Last & Roam:** Aircraft-grade aluminum frame with corrosion resistance and 13-inch pneumatic tires for ultimate durability and mobility.
- • **Engineered for Efficiency:** CRX 420 commercial engine and CAT triplex plunger pump with thermal relief for maintenance-free, reliable performance.
- • **Unmatched Commercial Power:** 4400 PSI and 4.0 GPM deliver contractor-level cleaning muscle for any tough job.
- • **Pro-Grade Accessories Included:** 50-foot kink-resistant hose, 5 quick-connect nozzles, steel wand, and safety-lock spray gun ready for any surface.
- • **49-State Compliant & Ready to Roll:** Meets strict regulations so you can work anywhere with confidence and ease.

## Overview

The Simpson Cleaning 4400 PSI Gas Pressure Washer combines a commercial-grade CRX 420 engine with a CAT industrial triplex plunger pump to deliver 4400 PSI at 4.0 GPM. Built on a corrosion-resistant aluminum frame with 13-inch pneumatic tires and a 50-foot steel-braided hose, it offers unmatched durability and mobility for professional contractors. Equipped with five quick-connect nozzles and a safety-lock spray gun, this 49-state compliant powerhouse is engineered for heavy-duty cleaning tasks across diverse terrains.

## 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.

Review: If I could do negative stars I would… - I have NEVER had the issues with any desertcart seller the way I have with Simpson. It’s not even desertcarts 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.
Review: Awesome so far, 1 full day of use in… - 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.

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C3WH61Y8 |
| Best Sellers Rank | #25,278 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #180 in Pressure Washers |
| Brand | SIMPSON |
| Brand Name | SIMPSON |
| Color | Black and Silver |
| Customer Reviews | 2.8 out of 5 stars 13 Reviews |
| Global Trade Identification Number | 00879399008535 |
| Hose Length | 50 Feet |
| Item Dimensions L x W x H | 38"L x 23.5"W x 29"H |
| 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) |
| Item Weight | 133 Pounds |
| Manufacturer | Simpson |
| Manufacturer Part Number | 61252 |
| Manufacturer Warranty Description | 3 Year limited commercial engine warranty |
| Maximum Flow Rate | 4 Gallons Per Minute |
| Maximum Pressure | 4400 Pound per Square Inch |
| Model Number | ALH4440 |
| Power Source | gas_powered |
| Specification Met | 49-State Compliant |
| Tank Volume | 4 Gallons |
| UPC | 879399008535 |

## Product Details

- **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:** 00879399008535

## Images

![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) - Image 1](https://m.media-amazon.com/images/I/71MUStaPpyL.jpg)
![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) - Image 2](https://m.media-amazon.com/images/I/81KYdOvU+PL.jpg)
![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) - Image 3](https://m.media-amazon.com/images/I/81+TSOIXRLL.jpg)
![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) - Image 4](https://m.media-amazon.com/images/I/81KX+W0wRBL.jpg)
![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) - Image 5](https://m.media-amazon.com/images/I/815B8a1Ac-L.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐ If I could do negative stars I would…
*by A***K on February 24, 2024*

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.

### ⭐⭐⭐⭐⭐ Awesome so far, 1 full day of use in…
*by L***E on October 19, 2024*

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.

### ⭐ Don't buy this.
*by M***S on April 12, 2025*

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.

## Frequently Bought Together

- Simpson Cleaning 4400 PSI Gas Pressure Washer, 4.0 GPM Power Washer for Commercial Use, CRX 420 Engine, 50-Foot Steel-Braided Hose, Aluminum Series, 49-State (ALH4440)
- BE Pressure 4000 PSI Whirl-A-Way Surface Cleaner Size: 20"
- Raincovo Pressure Washer Quick Connect 3/8 Inch, Pressure Washer Fittings, Adapter Set, Male Thread, 4 Pieces

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-24*